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Search for aerodynamics in Topics


Principles of aerodynamics

The forces and counter forces of flight

Topic by SoDDiggerCpl    |  last reply


confetti blower clogging

Hello everyone. I have a question which I think will be a simple one for you guys. I bought these mini confetti blowers for our church. They suck confetti, which are mainly small shiny rectangular pieces or some rose shaped paper-like material pieces, and blow them to the air. So ours came with a hose setup to suck the confetti: http://i.imgur.com/L3dzXMM.jpg I decided to modify it to suck confetti from inside a box like these ones do: http://i.imgur.com/EkE930u.jpg Here's a sketch of how it looks now with the box I made. http://i.imgur.com/Q5rPvfp.png What's happening though, the confetti pieces after few seconds form a clog where the box connects with the tube. http://i.imgur.com/pd7ZYFL.png If I push that clog with my hand, the confetti is sucked in and flows through the tubes and is blown just fine. I modified my box from the inside like so, but it didn't change anything. http://i.imgur.com/60vn7yW.png -> http://i.imgur.com/F5hzBwr.png Someone unlike me who actually understands why that is happening, can you explain why clog happens and how would you suggest me to modify my box shape to fix this? Not that the hose setup is bad, it just looks like a modified vacuum cleaner like that and not very pretty to have in ceremonies and we still need a box to put the confetti pieces and the hose in to suck the confetti so I thought I could just have the box on the machine itself and make it easier to handle.

Topic by MarkL9    |  last reply



How can i make a simple wind tunnel apparatus for measuring lift? Answered

I am making a wind tunnel from a fan, some cardboard, duct tape, cups and K'nex to help me design flying machines. How can i make something for measuring lift on a wing about 4 inches long? Also, would it be best to test lift and stability with low, medium or high winds.

Question by aar0nc0le    |  last reply


Can i get valuable information from a wind tunnel with almost nothing straightening the current? Answered

All i have straightening the current are 8 cups, wide end facing the fan. The end is cut out to let the air flow and all the cups are pointed slightly inward to the stand holding my design.

Question by aar0nc0le    |  last reply


Biophysics: Airspeed of an unladen colugo...?

I'm looking for hard data on the relationship between typical airspeed / stall speed, glide angle, and wing loading of large gliding/flying mammals like the colugo, japanese giant flying squirrel, and flying foxes.  At first glance, Google turns up these facts with minimal digging. The catch is that the data are provided for different individuals, which is almost useless for my purposes.  Could someone point me toward a source that has all three pieces of information for the same individual, and preferably lists them for several individuals? Better still, is there an existing paper comparing the relationship between these numbers across unrelated species?

Question by passersby    |  last reply


RUBBER BAND POWERED AIRPLANE HELP REQUIRED. Answered

I AM MAKING A RUBBER BAND POWERED BI PLANE. I HAVE COMPLETED THE WINGS AND AM GOING TO ADD THE TAIL SECTION. THE PROBLEM IS THAT MY MODEL SO FAR IS NOT AERODYNAMIC AND JUST TUMBLES THROUGH THE SKY. IF SOMEONE COULD GIVE ME TIPS ON HOW TO MAKE IT MORE AERODYNAMIC IT WOULD BE OF GREAT HELP. A;SO HOW AM I TO ATTACH THE ENGINE.  PS THIS IS MY FIRST MODEL AND I AM PLANNING TO MAKE AN INSTRUCTABLE.

Question by luftwaffe29    |  last reply


anyone know how to make a self propelled "toy car" with out batteries or motors because i need it for tech class? Answered

I need this info for a tech class one day project we're build and raceing cars out of a set amount of materials and it needs to be self proppelling also anything on making it aerodynamic would be appreciated.

Question by cryptex    |  last reply


Penny model paper planes

In years past I had some printable model paper airplanes that looked like real planes, were aerodynamically shaped, had a penny in the nose for weight, and glided quite well. I have lost the folder in moving classrooms, and I can't seem to find them using google. Has anyone ever heard of these, and have a possible source? My favorite one was an older MIG.

Topic by pleasedontspamme  


How do you build a Box Fan Wind Tunnel?

I have a Science Experiment that I am running that requires I test the aerodynamics of several objects using a wind tunnel. I do not have access to a wind tunnel or wind tunnel testing software. But I have a multimeter, a box fan, and lots of cardboard. Does any one out there know how to build a box fan wind tunnel? Help me please!!!

Question by kowens    |  last reply


What excellent examples in CAD of low drag coefficient pickup trucks exist that are available on the internet?

Vehicles have been designed to minimize the aerodynamic drag with notable success. Production candidate vehicles (such as Aptera, Twike, and Honda Insight) achieving drag coefficients of 0.25 down to 0.11. Solar Challenge vehicles have reached 0.07. Nose cone and fastback upper and sealed or faired lower body designs can achieve significant reductions in drag, and are worth attention. I am attempting to optimize a design for pickup trucks and cross-over utility (CUV) vehicles that are based on the same basic chassis design. Can anyone contribute designs, examples, or sources of information on optimized pickup design? BTW, I am simultaneously searching for a safe design that has the vehicle center of gravity at or below the axle height, as it should be to prevent roll-over accidents. Risk of injury and death are significantly higher in pickup trucks and CUVs than cars, and now pickups and CUVs account for more than 50% of new vehicle sales. This tragic fact needs to be reversed with safer design.

Question by rkh986    |  last reply


Green car mod roundup

Treehugger has a nice roundup of mods that people have made to their cars to make them more efficient or run on alternative fuels. They even included the Honda Accord that runs on trash in the list, which is pretty cool. Other mods include wood-burning cars, biodiesels, wood-burners, solar-power, hydrogen, and aerodynamic enhancements. Check out the link for the slideshow. Note: there are 17 slides, not 17 cars. 17 DIY Cars Hacked for Fuel Efficiency

Topic by fungus amungus    |  last reply


has anyone tried to create a real car body out of paper mache?

How would the shell hold up to aerodynamic and general usage pressures? What kind of cost figures would there be? Are there any government grants available to address this idea? I figure once painted and sealed there wouldn't be any problems with weather. I can only imagine that the overall result is a lighter car, improving gas mileage. Additionally, any modifications to the shell would be a lot easier.

Question by javajunkie1976    |  last reply


Has anyone ever built their own rooftop luggage or cargo box?

I have had a couple and for 2 & 300.00 bucks or more, there's really not much to them. It's just a hollow hinged plastic box, made to be a little aerodynamic and strapped to an existing luggage rack. I find it hard to believe that a home made version couldn't be created as sturdy if not sturdier, hold more and last longer. I was thinking maybe pvc, conduit, or even wood framed. Just curious. Thanks in advance for any helpful input.

Question by SAWWAS72    |  last reply


Zero to 300mph in 30 seconds. On two wheels.

Meet the world's fastest ever road vehicle built to reach an astonishing top speed of 340mph.The Acabion GTBO uses jet fighter technology and aerodynamics to reach its extraordinary speed propelled by a state-of-the-art turbo-charged engine.Its designers revealed it could reach 300mph in a blistering 30 seconds - substantially quicker than the rival Bugatti Veyron which takes 55 seconds to reach its top speed of 250mph.Good grief, that would rattle your teeth!The article implies that an electric version is in the pipeline as well.Daily Mail story750 hp and 700 lbs vehicle weight result in more than 2100 hp per ton. They boost the jet-like GTBO to jet-fighter punch and to new dimensions of both efficiency and speed.V-max 340 mph at half throttle, governor limited.0 to 300 mph in less than 30 sec.Economic theories tell us, that you can not maximize effect and minimize effort at the same time. The Acabion GTBO proves the opposite. It minimizes weight and maximizes power and aerodynamic efficiency. The effects are just out of this world.100 mph at 1.7% throttle and 100 miles per gallon.150 mph at 4.3% throttle and 62 miles per gallon.250 mph at 17% throttle and 25 miles per gallon.Acabion websiteMore photos at Jalopnik

Topic by Kiteman    |  last reply


alternatives to fiberglass

Hey guys im building an enclosed recumbent motorcycle and i am a bit stuck. im making the outer skin. to get a working aerodynamic shape, complex curves and all i want to use some flexible sheet which i can connect to the strong points of the motorcycle. i am thinking of using that polypropilene chicken wire, and i wonder if it would be good enough to be the base of the fairing and put fibreglass on top. my brother wants to use cedar strips as a base and cardboard strips mounted over them and fibreglass the resultant mess. then bondo the lot. any ideas. i am not describing this very well. a single sheet of a flexible matting will save me the trouble of making a mould of the fairing. thanks guys.

Topic by maninamousesuit    |  last reply


Tiltrotor UAV?

So, a friend and I were looking at something NASA published a while ago. It was a call for a tiltrotor craft that could carry 55 people, could land either in water or on land, and could suck up water for use in firefighting. It was also meant to be a civilian craft. Anyway, we started to get an idea in our heads about designing some sort of tiltrotor rc thing or perhaps a UAV. We're both mechanical engineering majors and have some experience with aerodynamics, programming, electronics systems and rc aircraft. I was wondering if anyone had some good suggestions as to the design of this. One of the things we weren't quite sure about was what we would use for a power supply. Appreciate the help. *Note, if we actually build anything it will only be a small scale proof of concept prototype built from inexpensive parts.

Question by SG1Oniell    |  last reply


Looking For Game Show Contestants

DISCOVERY SCIENCE NOW CASTING A NEW GAME SHOW!!! The producers are looking for builders, scientist, inventors, engineers, carpenters, welders, mechanics, architects... who love to invent new gadgets; build robots; racing power tools; weld together bizarre machines that drive, fly, climb, shoot flames or launch projectiles... for a team challenge that will show off your handy skills such as: welding, knowledge of aeronautics, auto mechanics, hydraulics, carpentry, pyrotechnics, thermodynamics, aerodynamics, material science, electronics... If you, or someone you know, is a gonzo engineer/scientist or just a high-energy, creative, fun, builder Then email, your name and contact information to: icnbld@yahoo.com This Game Show is for thinkers, dreamers and doers, who are eager to let their inner Mac Gyvers be seen, and are ready to collaborate with a team of other builders to beat the clock in order to "SAVE" the BIG PRIZE!!

Topic by demolition399  


after school program help

I am hopefully going to be designing an after school program for the spring semester. the age group is potentially 5- 11. but could be, if i so choose, only 9-11. I am trying to create a program that is exciting, fun, educational and of course, relatively cheap. The first idea i have is to build a model wind tunnel, then have the students design and build pinewood racers (with assistance of course), then we can test the drag in the wind tunnel and make adjustments, then race them. Giving the students the oppertunity to learn a little about wood working and also aerodynamics. I am also looking for suggestions for other projects that would meet the criteria of fun, educational and inexpensive. so if anyone has any ideas at all please feel free to share them. also if anyone is intereted in persuing the above project i am happy to supply links, as they are all ideas i have stolen. thank you Alec

Topic by alec868    |  last reply


My First Semester Drawings

Hello!            Every school semester there is some downtime when I just draw cars. I don't have my normal critics this year because I am at college now so I figured I would see what the instructable community thinks of my cars. If you like aerodynamics and fast looking cars you should like my style. Also as you can tell I made up a car company to put all my cars under called Veloci. If I do have that car company in the future that's what it would be called. Anyway more to the point let me know what you like or don't like about any of these and I will try making a better batch this semester! Thanks! JonnyBGood [Please note not all of these cars are finished drawings! Some I just ran out of the inspirational drive to finish them.]

Topic by JonnyBGood    |  last reply


collaboration

I have stumbled across this website years ago, and always found lots of fascinating projects here Since then ive also noticed that while its a community and people love to collaborate here, the design and layout of the website doesn't seem to lend itself so well to the task of collaborative projects we really are not making the best of the brain power that's here, wouldn't  it be great if people could search for projects to get involved in,, and published projects could list people and skills needed to make it happen. for example if i want to design a low cost wind turbine, to help bring power to remote places, im looking for engineers, aerodynamic specialists. and 3d designers to help develop it. Can we have a way to help these people to find each other?  and then an area where work can be set out and people can jump in and fill in the blanks. With the way the world and consumption of its resources is going, websites like this one, and the power the internet gives us to put our heads and efforts together to solve common problems is going to be vital Thoughts?

Topic by alexfno    |  last reply


Selling Nerf Stefans (Darts)

Honestly I have just found out that instructables has a market place! Sorry for posting this as an instructable! Anyway I just copied all of this from my instructable: Hey Guys! I'm selling nerf Stefans (darts) for very cheap! Every Item is FREE SHIPPING (to the USA)! The prices are: $8 for 25, $14.50 for 50, $19 for 75, $23 for 100. If you live out of the USA pm me and we can negotiate a shipping cost. Also, if you want more than 100 bullets pm me. Buy it at FarmHobbies.Weebly.com. Thanks to TCBM on YT for the clip of it in action. EDIT: I changed the tip of the darts!!! Now they're more aerodynamic thanks to the dome of hot glue! Here's a picture of what they look like now: http://farmhobbies.weebly.com/comparison-of-new-and-old-darts.html.  I only except paypal right now, also please just buy them at the website i mentioned don't ask to pay with cash or something... ALSO I sell modified Nerf Guns just like Twisted, although I don't paint them...

Topic by Pizzapie500  


how much potassium nitrate should i use to speed growth of watermelon seedlings?

Hi, I have several KG's of potassium nitrate, and am currectly growing watermelons, among other plants, however my concern is mostly with the watermelons. I live in mackay, tropical queensland, the sun here is very harsh, and when the wind blows, well, its pretty hard. i have only a limited amount of time before these seedlings use up all the nutrients in their dirt, (they are currently in an egg carton filled with dirt), and each their maximum size before they start to starve. I want to know, how much potassium nitrate i can use to boost their growth to get them as big as possible for when they go outside. Where i live, the house is pretty aerodynamic, you exprenice windyness from all four sides, so i need them as strong as possible for that time that i plant them outside, in large individual pots, until theyve grown enough to be planted around my spoon drain. Anyway, i need to get them to grow ALLOT, and i have the potassium nitrate, however, nitrate is toxic to plants, so i need to know what a safe quantity might be. im not asking for the exact best value, but just anything that will aid in boosting growth before they get repotted would be great. thanks. also, my tomatos, black russian and some random huge tomato, is growing very slowly, would nitrate help them also? and pumpkin, when the seed sprouted, part of the seed was dead, and so two starter leaves were bound together, and died, leaving it leafless. new leaves are starting to appear, but not fast enough as its turning yellow, again, would nitrate help?

Question by oldmanbeefjerky    |  last reply


TBAG

Alright, well here's the gun I was talking about in my other thread. I'm doing pretty good, I actually got you guys a thread out the day after making the weapon. The name? It stands for TheDunkis' Bad A** Gun. Obviously, it doesn't mean worth crud. I just made it work out so it'd have the acronym TBAG =P.  It's a rather basic weapon. It ties with the BAW for my favorite weapon based around simplicity. I decided to scrap the removable magazine idea and just make it breach load. You can chamber a round directly so you can fire it like a single shot or you can continue to force rounds in to load the magazine. It has a charging "handle" in the side of the stock. And then of course I have the optional sight that I made and never wanted to take apart. Y'know how hard it was getting the little suckers to bend into the connectors like that? The main feature of this gun though is its ability to fire multiple rounds of a new ammo I've been experimenting with. They're not made of K'nex. Rather, they're pen ink cartridges from those bigger, more expensive kind that I can't remember the name of. They're almost the exact same diameter as K'nex rods. They're rather lightweight but, like oodammo, the majority of the weight is focused on the front. It's also somewhat pointy so it's just a tad more aerodynamic and fun to shoot into objects =P. They're very accurate and stable without the use of fins or anything so they get decent range. Obviously I wouldn't fire them at a living thing but it did give me the idea of using some sort of foam armor or something so that you could keep track of hits and such. Anyways, I like the feel of it. It's rather balanced and compact enough without being awkward to handle. I'm probably going to tape the handle. Expect a video tomorrow. I'm not sure when I'll post but might do it this weekend if I have the time.

Topic by TheDunkis    |  last reply


Guess My Mileage Contest!

In about two weeks, I will be embarking on a nearly 2000 mile road trip from the "right" coast to the "left" coast of the United States. I will send the person that guesses my fuel economy over the entire trip a $10 (USD) bill and 1 instructables patch.Rules1. Thou Shall Not Exceed My Mileage2. Thou Shall Guess a Number Ending in the Thousandths (xx.xxx)3. Thou Shall not guess a previously guessed number4. Thou Shall guess MPG (please no l/100km et. al. - just to keep the rules more simple)a. If no one guesses exactly, the guess closest, but not exceeding the real number wins.b. If two people guess the same number - see rule 3. The first person's guess is validc. You can change your guess by replying to your original guess - once your guess is changed, it can be taken by someone else.d. Guesses that do not accurate to the thousandth will be ignoredHere's some clues to assist your guessing.Car2000 Volkswagen Jetta2.0L Naturally Aspirated Gasoline Engine ~110hp ratedCurrently 102,xxx Miles on the Odometer5 Speed Manual GearboxOil change ~1500 miles ago (it will not be changed for another 9-10K miles)Tires inflated to 50/55 HOT - these are all seasonsGrille Blocked OffPassenger Mirror Folded in (possibly will be removed)Scanguage2 to monitor coolant temperature, trip mpg, TPS etc.CargoPossibly 1 mini fridge >100lbsMe: ~130lbsPassenger ~150lbsTwo suitcases (one will not exceed 50lbs)Possibly a third suitcase (not exceeding 50lbs)Lets tack on an additional 200lbs for things I'm not seeing nowEPA Estimates24mpg City31mpg Highway27mpg CombinedMeI use hypermile driving techniques... That is:1. Accelerate based on Brake Mean Fuel Consumption Charts (~2500-3000 RPM - 50% throttle = most efficiency)2. Coast and Burn with 3+++:1 coast-burn ratio (engine either off or idle)3. Engine Off at stoplights and approach4. Windows UP - AC OFF (this may change, but that's currently how I'm riding | AC will trump windows)5. I will not exceed the speed limit - I may travel below for optimal fuel economy6. Bump Start where applicable (following the same method the Prius uses to start its ICE)RouteCurrently being discussed and looked over. I20 is looking promising, but it's up in the air.GaslogPlease take this with a grain of salt. I only just recently started hypermiling (beginning of April lets say). So only the last tank (which was 100% city) reflects that.My GaslogCalculationCalculation will be based off the sum of the miles (accurate to the tenth) divided by the sum of the fuel pumped (accurate to the thousandth). Everything will be based on receipt, not scangauge2 data.ChangesThis is the section that I post changes to my car, cargo etc.. A change can be as basic as a bit more anticipated weight or as drastic as major aerodynamic modification or mechanical. A possible change may be a hot air intake.Finally, a note about my oil changes.... I send an oil sample to Blackstone Labs for oil analysis. My last oil change interval was a tad over 10K miles -- and the lab report indicated my oil was still good - everything was good except a slightly high Cu level. Not in the danger zone, but something to watch. My point is... Don't give me any crap about 3K miles - I like my oil films established and don't need constant oil changes screwing that up -- that's why I pay for oil analysis (besides, it comes out cheaper in the end anyway).

Topic by trebuchet03    |  last reply


Ancient technologies revisited - 2000 year old battery

This is the first part of a series (if you are interested in more) about technologies that are confirmed by scientists by rejected by archeologists and historians alike.Without abtteries we would struggle to have what we have today.No one would have needed a laptop or mobile phone if it has to be plugged in all the time...And depending on where you read it is said that our batteries are about 200 years old.First we needed to "discover" electricity to get the idea that we might need something to store electrical power with.Building a rudimentary battery is not hard.Every kid can create these lemon or potato clocks and light with a cheap kit off the internet.Creating something with at least enough storage capaicty to run a small motor for while or to power a flashlight is a different thing.We often speak of power density - a formula to define how much energy per volume a battery can store and what the max amps delivered are.KISS - Keep It Simple Stupid!Means we imagine that we want to build battery with the most basic tools and ingredient you can come up with.My imaginary shopping list:A good amount of clay and plenty of water for it ;)Some malleable metal like bronze or coopper, maybe even gold.Some basic salts.Some basic acid.A small pot of bitumen.Making it - of course only theory...Use the clay to create good sice, vase shaped vessel that can hold about 10 liters when finnished.Create a suitable and tight fitting lid with the leftovers.Bake in your fire until ready.As an alternative and for a bit of asian touch you can of course substitute the clay with ceramic here - be creative.Finnish it off by applying a nice bitumen coat to really seal the surfaces of lid and vase.Time to grab a cold beer and get it to your mate with the big anvil and blast furnace.Ask him to create a thin walled metal tube that is about 20cm in diameter and one with a diameter of about 8cm.Once you made him agree offer the beer and ask to also make some sort of wire - like thin metal strips to be connected to one end of the tubes.Since you took way too much beer over to your friend I suggest that you continue when you are sober again ;)Wrap some cloth around the smaller tube until it fits tightly into the bigger one.Soak this stuffed cloth now with the brine you made from your first selected salt - you figure out which ones work.Let it dry or do it faster with some applied moderate heat.Repeat until it won't soak in any more brine and turned into a solid salt filling.Fill the smaller tube with your second salt, compress it hard and seal the ends with something the keeps the stuff insde but allows liquid to penetrate the salt.Place in your clay vase and secure with some filler material - be creative and consider things crushed volcanic rock, "inert" stuff like hair or cotton, maybe even wood splinters....If the filler material could float fill the top with something that keeps it down, if in doubt just use sand.Check that all is fine and that the wires come out on either side of the rim.Slowly fill with your acid of choice until all air is out and the vase is full to the brim.Seal the lid in place with some bitumen.If you did it right and used the right ingredients you have now a 2V (+-0.2V) battery with a capacity between about 3 and 10Ah.Will take you a bit of time and experimenting to get it right with the ingredients but it does work.What does not work according to official science is that you would have had any use for such a battery over 2000 years ago.A bit like the bumblebee...Science tells it is impossible that such a heavy insect with such tiny wings and such a great mass can fly.Earonautical engenners confirmed this many times.Our humble bee though has clue about science, aerodynamics or a perfect weight distribution, let alone things like lift.And so it just flies anyway.....The batteries exist, they were confirmed many times to be batteries with rather high capacities.But since in ancient Aegypt, China, India or soth America no one knew anything about batteries according to our archeologists and historians the only possible explanation is that they are not batteries at all....The question should not be whether or not they had batteris as this is already answered.The question must be: Why did they need batteries???And they had tons of them....Some types according to chemical analysis even rechargable.You only need batteries if you need electricity and you can only charge batteries if you have electricity....Start experimenting and try to figure out how many different types of batteries you can make from most basic ingredients...I will continue with another post about the purely theoretical existence of solar cells during ancient times.

Topic by Downunder35m  


"Knex War?" (The Math Bit)

Hey guy! Sharir1701 here and I just want to start off by saying that I'm not back into Knex warfare, but I have something to show you. About a year and a half ago, I posted this forum topic. There I explained why, in my opinion, just adding more rubber bands to a gun will not actually produce an overall better gun (past a certain, low point). I'm not getting back into that discussion, but I simply wanted to share something regarding that. Don't ask me how or why (I don't know, myself), but a few days ago I suddenly remembered that old assumption I made. Being a perfectionist, I hate leaving things unfinished or unexplained (particularly math and physics related inquiries). Back when I posted that topic, I had little to no formal Physics knowledge, and the beginnings of an understanding in mathematics. Now, I have a much broader understanding, much more knowledge, and an ability to explain and evaluate what I once couldn't. Anyway, what I'm trying to say is, back then, I didn't have the tools to prove my claims. I firmly believed in them, but I couldn't confirm them. It's nothing complicated, but, like I said, just something I'd like to share. I also want to point out that, although I personally don't enjoy spending days upon days perfecting a little plastic mechanism for firing (mostly) non-aerodynamic plastic projectiles, anymore, there still is a warm spot in my heart for the craft I once loved. More to the point - this is a small article just showing something I did in a few minutes the other day, that helps me to better understand how a Knex gun works. I hope that in writing this, more people that are still building guns, will think about more accurately calculating certain things about their guns to help improve their performance and hopefully produce more efficient guns. The final note I have is that I'm about to show you equations, all of which can be plugged with real, measurable numbers, to calculate to a high degree of accuracy, the forces at play. This means you can actually calculate the most efficient layout for a gun, and also that in designing your next, you will be able to use these equations, and many others, to find optimal solutions to your problems. So, what's all this fuss about? Well, basically, I just proved with a few, painfully easy equations that my conjecture about the forces in a gun, working on the pin, is true. I'll just get to it: First, Hooke's Law states that the force necessary to change the length of a spring or a (tense) rubber band is F=K*dX, where F is the force, dX is the distance you want to change, and K is a constant number, that each rubber band (or spring) has. You can quite easily measure both of these. For rubber bands connected parallel to each other (assuming they are the same type of rubber band, which ever is your chosen standard), this equation becomes F=K*dX*N, where N is the number of rubber bands used. dX and K are both constant in the regards of the pull of a pin on a standard Knex pin gun. Therefor, the amount of force required to cock a pin (pull it back to it's full length) is linearly correlated to the number of bands you put on your gun. Next, if we examine Newton's equation of work and energy, W=dE=F*dX, where W is the work, dE is the change in energy in your system (input from an external force, i.e. your hand), F is the force applied along a length of movement, and dX is that length. Let us define the base position of the pin (not cocked, minimum tension on the rubber bands, fully in the barrel, etc.) as having 0 energy. This then means that the work applied to the pin by cocking it is equal to all the potential energy it has. From this, plugging in the force, we get Ep=K*(dX)^2*N. Let us assume a perfect world, where we neglect the effects of friction and air resistance, and assume all the momentum of the pin is transferred into the bullet as it fires (I will briefly mention in the end, why everything we're neglecting here just strengthens my claim in reality, but let's continue for now). After being released (in other words, shot), the maximum velocity the pin reaches right before the end of it's journey can be found using the equation for kinetic energy Ek=1/2*M*(Vmax)^2, using the fact that (again, neglecting energy wasted as heat due to friction) the energy is conserved, as no external force is working on the system, which then means that Ep,start=Ek,end => K*(dX)^2*N=1/2*M*(Vmax)^2 => Vmax = sqrt(2*K*(dX)^2/M) * sqrt(N). The first sqrt term in the final equation is all one big constant (again, K is the ratio associated with the rubber band, dX is the distance the pin travels, and M is the mass of the pin), meaning we can conclude that (C for constant) Vmax=C*sqrt(N). Finally, force applied by a moving, massive object can be calculated using Newton's second law, F=dP/dT (P is the pin's momentum, T is the time it takes for the pin to go from velocity Vmax to 0, transferring all it's energy into the gun and the bullet, but as I said, let us assume all of it goes into the bullet), or F=M*dV/dT (M, mass of the pin, dV is the difference in velocity, Vmax-0, which is simply Vmax. This is because P=M*V, which means dP=M*dV, ignoring relativity). So, F=M*C/dT*sqrt(N). The time varies slightly, but insignificantly, so let us assume it is a constant. So that's it. The force exerted by the pin on the bullet is some constant (calculatable, as mentioned and as shown), times the sqrt of N, the number of rubber bands on the gun. So there you go. Just a little something I did out of the blue the other day and thought I would share a proof of my conjecture from what feels like eons ago. I hope you enjoyed. Finally, I would like to tell you guys, perhaps as a little tease, since I'm not sure if I will ever upload it, but I have made 1 more gun after I stopped posting. I have already slightly teased about it in my user info. I guess I'll tell you guys what it is if I'm already posting something here again :) Possibly my most enjoyable, most well received, and quite innovative gun of all time? The REMPAR-2. I built the REMPAR-3 (I was also going to call it S5 when I thought about posting it). In a brief summary, it's a pump action, chambering (or bolt action as I and many others falsely used to call it), magazine fed rifle, that's only 5 layers thick all over, except one tiny area where it's 8 layers thick (1.5 extra on either side), as a reinforcement, not necessary if you use less rubber bands. Oh, actually, there's another small necessary area where it's 7 layers thick, but it's tiny and doesn't make the gun look bulky at all, and who cares. Plus, the one is around the pump, which looks quite natural, and the other is "disguised" as a detachable sight (not really detachable) that also looks fine. It also looked fairly good for a gun that I made, it used (if I remember correctly) a grand total of 0 broken pieces, which is a big accomplishment for me (the mag has some broken white rods, but fuck off), and it worked flawlessly, reaching ranges over 80ft and being able to go at 2-4 rounds per second, depending on your skill level with it. In other words, I could shoot 4rps; My girlfriend, with no experience or practice, could do 2rps, which says something about the gun's comfortability and ease of use in my opinion. It shot blue rods up to an accuracy of about 5x5cm (2x2in) over 30ft, which is amazing for a Knex gun, and it was truly super comfortable. It wasn't even long at all, which is saying a lot, looking at some other people's attempts at 5-wide pump actions (I may also be guilty of an attempt several years ago). Being quite short and only 5 wide, it is also quite light. I'm sorry, I just really liked this gun, I think it was truly my best creation ever (of course, the S3 is by far the most innovative gun I've made, but it's mostly a concept gun, not meant for real effectiveness). I may post it in the future, but I'll make no promises. I suppose I won't leave you guys completely hanging and take a picture of it. Oh yes, there's also a neat, fun little thing I did, originally because I saw no other option, but then I actually really loved it. I'm talking about the mag-lock. It locks automatically (there's a band on it, but it ripped a long time ago, so...) and the mag cannot fall out. Then you pull on it with your middle finger, similar to a trigger, and the mag just drops right out. Love it :)

Topic by Sharir1701    |  last reply


Technology Makes Cheap Drinking Water from Air

INTRODUCTION:   How can we best apply basic technology to help the underprivileged and/or disaster-hit countries like Haiti? Daily hygiene and nourishment are among the top needs for disaster ridden regions!  Simply put, no water means no hygiene. The Romans understood that over two millennia ago and created their complexly beautiful aqueduct networks for handling both fresh and wastewater! Other ingenious water systems like “air wells” have been found in the city of Theodosia (cf: discovered in 1900 by Zibold, see Zibold’s Collectors/Dehumidifiers) dating back to Greco-Roman times during the Byzantine Empire. These were strictly passive systems that naturally dehumidified air, collecting its potable water in underground basins. All air, even in relatively dry desert regions, will precipitate or release its natural water content (initially in the form of vapor) through condensation when it hits its dew-point temperature and below. That means you “chill” it to an appropriate level that is anywhere from 5F to 50F below its current air temperature, depending upon how much water content (relative humidity) it has locally absorbed. The condensation of the water vapor releases its internal latent heat (reheating the cooled air) which must be constantly dissipated (absorbed by something) in order for water formation to steadily continue. So how do we dissipate this resultant vapor-heat and chill our air without any infrastructure or electricity, in an underprivileged or disaster-ridden region? We simply bury a long cast-iron or any metallic drain-pipe sufficiently underground where the temperature of the earth is naturally held to a constant at around 45F to 55F. That’s our “free” chiller gift from nature. One end of the pipe, Figure-1,  sticks out of the ground to suck-in local outside hot air, and the other end dumps cooled dry air and water into an underground cistern where it gets collected and is piped to the surface to both exhaust the cooled dry air and connect to a water pump. We need a hand operated water pump to lift up the water above ground, and we need an electric fan to constantly pump air through the ground-chilled piping system. We can even force the cooled piped air to exhaust into a tent-like structure where it provides air conditioning as an added bonus, but this adds the penalty of both power and the increased fan size necessary to drive our required airflow further into an enclosure! While this concept is not “passive” (requiring electricity to work) like those clever Byzantine air-wells, it will produce much more potable water and within a smaller volume than those elegantly passive historic devices. The electricity for our fan power requirements can be produced by any one of four ways using either “active” or “passive” techniques: 1) An active playground or bike-pedaling-person or oxen-driven mechanism-generator, 2) A passive windmill generator, 3) A passive solar energy collection system that directly generates electricity, or 4) A passive thermo-electric system that directly generates electricity using the Peltier effect, operating solely on temperature differences between the cell’s top and bottom surface (we jury-rig the cool pipe and hot ambient air to contact separate sides of the cell). Depending upon how much water is needed, the required air volume plus pipe length and diameter, together with the fan will be sized accordingly. We can also configure groups of parallel fan-driven air pipes that are radially fed into the cistern. The sizing of this underground network depends upon the ambient air’s local average temperature and relative humidity (how much water gets absorbed into the air) plus buried pipe depth and effective underground temperatures achieved. The basic concept is one where we “wring” water from air at some given humidity content. The higher its relative humidity the more water is recovered from the air. The air-wringing process simply chills the air as it scrubs along the cooled internal pipe surface until it starts to rain inside the pipe from condensation onto its surface. The condensation is like the dew that forms on car windows, grass or any cooled surface in the early morning, before the sun comes out and evaporates the dew back into the heating air. A further bonus is that our dew-formed water is naturally distilled and very clean. It is potable water ready to drink without the need for additional sterilizing agents. Of course, we must make sure that the interior piping and cistern network is biologically cleansed before burying it underground. The hand pump with its 10 to 15 foot extended piping to reach the underground cistern must also be cleansed. The beauty of this constantly replenishable water supply is its convenient underground installation anywhere! After the in-ground installation, we have a virtual, partially passive, no moving parts, non-breakdown system containing above ground total access to all moving parts that could breakdown, namely the water pump and electric fan. Also, it is easily maintained, with few moving parts (water hand-pump and electric fan) and basically lacking any technical complexity which makes it ideal for technologically backward regions. The example below uses a relatively small industrial fan moving air at 1500 CFM (Cubic Feet per Minute) with a DC motor rated at 1kW. This fan together with our underground piping system will conservatively generate 12 GPH (Gallons Per Hour) of potable drinking water without need for any purification chemistry. Based on an average electrical cost of 14-cents per kWh (kilo-Watt hour), the typical commercial distillation of one gallon of drinking water costs roughly 35-cents as compared to our cost of only 1.2-cents. Furthermore, if we decide to go green and use solar energy for generating our water, it would effectively cost us nothing beyond the initial installation! USING A PSYCHROMETRIC CHART TO SIZE OUR WATER SUPPLY: The following gets a little technical and is only provided for those die-hards who are truly interested in how the science works. Those non-technically schooled may skip this part and not miss the basic concept. Figure-2 shows a Psychrometric Chart for air. This chart summarizes some of the basic thermodynamic properties of air throughout its typical range of operating temperature. The chart uses six basic air properties that defines the physical chemistry of water evaporation into air:  (1) the enthalpy or total energy contained within a unit of air which is a combination of its internal and external energy, expressed as the amount of BTU-energy per unit mass of reference dry-air, (2) the specific volume or the ratio of a unit volume of local air to its mass of reference dry-air, (3) the humidity ratio or the amount (mass) of moisture in a local unit of air divided by its reference mass of dry-air, (4) the percent relative humidity per unit of local air, or the mass ratio (expressed in percentage form) of the partial pressure of water vapor in the air-water mixture to the saturated vapor pressure of water at those conditions (the relative humidity depends not only on air temperature but also on the pressure of the system of interest),  (5) the dry-bulb temperature or the locally measured air temperature, and (6) the wet-bulb temperature or saturation temperature which is the local air temperature experienced during constant water evaporation (a wet-bulb thermometer is typically used:   a thermometer that measures resultant temperature while wrapped in a water wet-gauze and spun to generate local air movement and max-evaporation)  1.0   The Process and A Sample Calculation Our Psychrometric Chart uses six thermodynamic properties that help to determine the amount of water available for extraction from the local ambient air as a function of its temperature, pressure and relative humidity.  Let’s assume the following local ambient conditions for the region we plan to construct our water system at:  (1) Typical daily air temperature Td = 106F and one atmosphere pressure assumed at sea-level, (2) Relative Humidity, RH = 55%, and (3) Typical underground temperature down at six feet is measured at Tu=55F (at 12ft. it drops to ~45F). This yields the following calculated results for obtaining a steady-state supply (changes at night) of water to fill the cistern:      1)      In our example, the “local” air (dry-bulb) temperature is Td=106F, at a relative humidity of RH= 55%.  Fig-2 indicates that the resultant Humidity Ratio is HR= 0.0253 Lbs-water/Lb-Dry-Air (intersection of Td=106F line and RH=55% line, then horizontal to HR value).  We then determine the “gulp” of air volume containing the HR Lbs-water which corresponds to the point of intersection of Td and RH. Interpolating on specific volume “mv” yields mv=14.7 ft3/Lb-Dry-Air (this value sets the optimum unit airflow for our given ambient conditions, and creates a ballpark pipe length to diameter ratio needed later). It represents the basic unit of air volume that will enter our underground pipe per given time, and ultimately defines the size of our fan and piping network. For increased water creation, multiples of this unit volume will scale up the additional amounts of water that can be collected. 2)      As the inlet air cools down to a temperature of Tu=55F, from contact with the relatively cold underground pipe, we follow the constant enthalpy line (red upward left-diagonal) from the intersection of Td and RH to its saturated air temperature condition of Ts= ~88F, which is its dew-point temperature where the corresponding local RH=100%.  At this temperature or under, the air precipitates and releases its moisture content, resulting in water condensation onto the pipe walls.  Since our air will chill to a final pipe temperature of Tu=~55F, we follow the RH=100% saturated curve (green) down to yield an HR=~0.009 Lbs-water/Lb-Dry-Air. This is how much water is left in the air when it gets to 55F.  Therefore for every pound of local outside air that enters the pipe, mw=0.0253 – 0.009 = 0.0163 pounds of absolute pure, distilled potable water precipitates onto the inside pipe wall (per pound of dry air that is cooled and dehydrated) to gravity-flow out the pipe exit and into the cistern. 3)      We now convert pounds of air per unit time into a unitized volumetric airflow that yields gallons of hygienically pure potable water production per unit time. For every Va=100 ft3 of local volumetric air movement per minute (CFM) through the pipe, which translates into ma=Va/mv= 100/14.7 = 6.8 lbs. of dry air per minute or 6.8 * 60 = 408 lbs. per hour (PPH), to yield a water-flow of mwf=ma * mw = 408 * 0.0163 = 6.65 PPH or 6.65/8.345 = 0.8 GPH of water.  An industrial fan rated at 1kW DC will typically move 1500 CFM at a pressure of 8-iwc, to continuously produce 15 * 0.8 = 12 GPH of pristine potable water. 4)      Not shown here are the design details of sizing our pipe, fan and solar collection system for electric power requirements using heat transfer principles coupled with a thermodynamic heat balance, and aerodynamic fan performance assessment. These details help to size the electric power generation requirements plus margin used to properly size a solar collector containing further margins for overcast days. The engineering involved here is straight forward but beyond the scope of the current project.

Topic by RT-101    |  last reply


Repulsine - the great mystery...

Even before the repulsine saw some attention during WW2 there were sightings of what we know call the classic UFO shape.Be it in Austria, Poland or other places in Europe, people reported weird disk like thing with a dome flying around.What leaked in images and documents after the war shoed that the repulsine looked basically identical to what people saw as a UFO in the sky over big parts of Europe.Then again, the repulsine appearently never made it a usable stage, same for most jet fighters at the time and still they flew around...If we now just take it for granted that actual test flights really happened back then you might wonder why we did not see any after the war anymore.For most critics it is a simple sign of facts and "confirms" that the replusine might have been a nice idea but never anything that really left the ground.As said, I often like to dig deeper and in this case the digging took far more years than what I planned on.I can not provide any solid proof for the following but I am sure even a sceptic will come to similar conclusions after reading it.Try to find some "eye witness" reports from people who saw the so called "Roswell UFO".Yes the one that made Area51 so secret and famous...Reports can be boiled down to some essential features of the hull, for those who saw it proof that it is alien.Three distinct round shpes on the underside, like you add the bottom of an egg to a round disk.Said disc of the bottom was also shaped like a wing, or the flying disk toys our kids like to play with.On the other side the shape grew up like a half shphere with an added cone or round top on it.On these area they claimed to have see engine outlets or similar and appearently the top cone was spinning in another direction than the rest of the UFO.Now I am no expert for Roswell but if I leave area and time out then I could have been fooled to think these people discribed exactly the same thing people saw a few year eariel flying over Europe.The Roswell UFO was not from another world, just stolen from the looser of a really bad war.What was seen was a working Repulsine, be it an original or something the US created from the 5 prototypes that disappeared after the war.Ha, ha, good one, then why don't we saw them flying after this anymore?Well, for starters it was a testflight gone wrong.Presumable it was planned to be limited to Area51 but the pilot lost control.Considering the Nazies appearently did their best to kill everyone involved in the project before the aliies arrived it is no big surprise.What that test flight would have shown is the impossible manouvers people already witnessed over Europe.90° or more turns at full speed instead of making a turn like a plane, sudden changes in alitude as well as accelleration on a level that makes even modern rockets blush.And if it really was the first bigger testflight they did it explains the big secrecy about the Roswell incident and what followed and created Area51 as we knew it.A "weapon" capable of these things would mean total dominance and options to impove planes and more.So why did they not even do that - or did they?The repulsine was created based on what we call today fringe- or pseudo- sience.If there is only one peroson, or a few that can even understand the claimed working principles that it can't be science as we know it.So, lets take a look what things were already heavily used in the repulsine that "we" claim to have developed or discovered decades later.Coanda effect.When air travels over a surface then it will follow the surface.You can try this with paper strips and blowing on them as well as a stream of water and some shaped objects.Long known but never found any real use until the military picked it up.For example air inlets were then developed to utilise the coanda effect.Remember how a lot of them these days look like a ducted fan housing?The round and slightly conical shape of the inlet will actually act like an airfoil and provide lift - of pulls forward in the direction of the air flow direction of the engine.I supercars we use it to create more downforce and better aerodynamics.Venturi effect.Again a very old one but funny enough also a major factor to make a jet engine work.Tesla turbine.In the Repulsine the rotating copper disks acted like a huge Tesla turbine by using a similar effect.The space between the disks got smaller and smaller towards the outer perimiter.Due to the fast rotation the molecules were accelerated and this created a partial vacuum.We use these principles today for specail vacuum pumps but also in military applications.Harmonics.Without harmonics and resonance the Repulsine would have been impossible.And at a first glance it seems we never made any use from that bit of the machine.Then why do we design exhaust systems in such a way than already the extractors ensure a pump like action and controlled backflow?The sound a good exhaust makes is also based on using the harmonics created by the explosions in the cylinders and expanding gasses.We learned that it is far more efficient to use harmonics and resonance in an exhaust system from somehwere ;)Plasma.The repulsine was said to have emitted a bright glow during certain movements or speeds.To create plasma we need a lot of energy, not so much however if the plasma is a by-product anyways.We learned that a high enough voltage differencial in a vacuum can create a nice plasma arc.From there things like analog TV monitors were created.But we never made anything that creates plasma for any use in an atmosphere.Well, unless you start to check supersonic rocket engines and other things.The working principle is very, very close here in some applications like the ramjet.Vortex energy.Today we see all vortex energy stuff as a free energy scam or at best a waste of time.But from the inlet to the outlet the entire Repulsine utilised what we now know as vortex energy, vortex math and so on.The air is twisted and spun around so many times that it is hard to keep track - but it always happened in a harmonic and resonant fashion.In some way this is implepemented in very expensive cars to keep the ventilation system almost silent even at full power.If you ever take an expensive car apart you might wonder why the air system is not as smooth and straight as you would have expected to get this silence ;)There is more but the list would become too long ;)So, if the repulsine was really that great then why was it taken apart to only utilise fractions of it in other things?If you have something really great that combines a lot of things then no one would suspect if you "developed or discovered" some of it in other projects.And to give you a very bad comparison for the other way around:If you know how to combine a petrol engine with some long blades then you could fly!I know, we did that already but you get the point.I can give you a motor and blades but that would not mean you could build a plane or even helicopter!At that time and still today something like a Repulsine would upset the "balance of power".If claims are correct then the engines of the repulsine were only required to provide the enrgy for directional changes or speed but it flew on "free energy" as the main engine system.In lame words like a jumbo jet that only needs a small engine for the hydraulics and electricity...Another big problem is the replication even if you would have a complete and working model to disect.You see most parts were brazed or welded as screw or rivets would have been problematic in certain areas.Other parts like the Kudo horn like intake systems would even today pose a challenge if you want to replicate them 100% correct.And if your understanding of science and physics greatly differs from those who originally created the thing...If your understanding tells you a dice has 6 sides (we all know that) but in my understanding it would have 16 then you would never understand how my dice rolls ;)Bringing true free energy of any form into this world is only allowed if someone can still make good money from it.Just check solar cells and wind generators - we all can have them but our providers make sure they have enough of them as well ;)Will we ever see a fully working Repulsine again?Of course !Some people like old cars, some collect old planes or old machines and tools.A great project for people in the right trades is always to build thier own little steam engine.So to say as a reminder of how it all started.Same will happen with the Repulsine as the first really utilised free energy machine the world had.The war and killings were not what really scared the world.This happened and will happen over and over again to various extends.Really scary was once certain people realised what might happen if over there the war would end with a victory and people would have time to develop for peaceful things instead.Without the war or this idiot Hitler a peaceful war would have taken over the world by storm.Those making sure we know nothing else but paying for our fuel and energy would have lost their monoply.Times change though...We destroyed our world with our needs for fossil fuels and electricity.What is left we destroy by chopping it down, digging it out or just by building new estates on prime farm land.People are now more desperate then ever to find ways to reduce their energy bills or enviromental impact.Otherwise Google wouldn't make billions on all the fake free energy videos out there.But what would it take to recreate the Repulsine?The person able to come up with the understanding of at least attempting to build one again would need to have certain qualifications and titles.He or she would hold a Nodel price for completing some of our known laws of physics or for finding some of the still missing ones.It would be a quite hard to understand and like person too, maybe even highly autistic.The person would also have an addiction like need to complete things, add the missing bits.And of course a totallydifferent understanding on how nature and the universe work.David T. from England is such a person, or at least the closest mankind can offer so far.He can see math in his head as shapes and images.Complex math problems appear to him like developing landscapes in high detail.He even learned to speak icelandic fluently within 7 days!!Imagine such a person would develop an interest in the old pioneers like Schuberger, Newman, Tesla and so on?Where we normal people fail to see any relevance or connection a guy like David would be able to literally see how all these inventions and ideas connect.He would be able to SEE the math behind it!Knowing how something was supposed to work and combining what is known through patents, drawing, videos or reports would enable such a person to make conclusions.For example where we might just see a nice pattern when we throw a stone into an undsturbed lake such a person would also already know and see the corresponding math the created the waves and why they were created exactly like this.Assuming David has no real interest in such things, then is it possible others already try?Sadly yes and even worse they do it with kids.Learning methods that are different can bring great results.For example while we use a calculator for big numbers some kids attend really strict and performance based classes to do this with an ancient abacus!After years of hard and often painful training they are able to it with a small abacus that only has a single row of discs.Shortly after they graduate to a virtual abacus - they only twitch their fingers in the same motions they would use on the real thing, but the disks and rods are all just visualised in their heads.That however is all meant as an improvement and the kids do it because they want to and not because they are forced to.Like learning to be a chess champion before even being old enough to work...In china however we have a very selective education program.Kids are not just trained slightly different to our kids but also closely monitored on their progress.As soon as one stands out for some skill it is subject to examination.Being well above average here means it is an opportunity for the kid and the parents - on paper at least.We in the western world would see it as a viscious circle though.Over the years china developed not only a better understanding of how these special kids brains actuall do their things but also how to create tests for this purpose.What looks like impossible or nonsense to most kids will trigger a scecific response and understand in those that are special.We would create something that allows parents to know early on where the kid has really good skills and what activities should be promoted.In china though the parents receive a nicer flat or some additional income while kids are send to a far away school.Again we would refer to such a school more as a boot camp.Discipline is at least on military levels, same is the punishment system.In most cases families are not reunited for many years, phone or even video calls only happen in the rare times when western TV crews are allowed a sneak peak.I just say: If a kid would see the parents often enough then it would not only know what to talk about but also be happy to talk to them - this however you won't see.It is like they talk to some distant uncle or such.What is really scary though is how these kids are trained to see their purpose and how important it is to be the best in what they do.Imagine you lost your kid at an early age and the only thing you got over the year was letters from the government saying how well it is doing and that you can be proud of it.Then it graduates and you are not even allowed to be there on that day...After that the kid is gone for good, you get a new flat and your proud kid supports you with some nice extra income.You don't get to know where it is working, what it is doing or if it might just be attending some university.By any standards these graduated kids can be seen as a great number of genius young people.Math, music, languages, science, you name it and they will have the experts aged below 20 for it.But what do they do once school is finnished and life starts?So far no reporter or family was able to figure it out.Means they don't appear in some high profile company, they don't start a successful business or teach at any public or private school.I leave it up to your imagination where thausands of kids find secret employment once they graduated....If, at least in theory we could be able to understand all these old technologies then why don't we at least try?Everyone has a goal, some desire a happy family and nice house, other need fame or just money to be happy.With that comes greed.You might have a really nice car but that does not mean you would give to some neighbour for a trip.Even if it just a nice rose garden, you might not want to share the views with anyone.This is true on all levels and we created a term for it "Need to know basis".If you just operate a press in a factory then you don't need to know when or what the next job is that comes for your press.You will know when it arrives and can check the documents attached.You don't need to know that your council is expanding and it is only seen as a courtesy to let you know on some notice board or in the local newspaper.And even our government does the same.What we do from the first days of our new baby we do on all other levels in the same way.What the baby does not need to know we won't tell or show.But we provide all the littly anklebiter needs to develop and be happy.Changing nappies, feeding, proving comfort when sick or having a nightmare.Later we teach language and other skills like walking.It goes on as you know...Humanity as a whole is like a little kid as well.If we would know all the little, dirty secrets then we would riot and go mad.Things that are of no concern are nothing we need to worry about, so we don't get to know them either.Knowing how build the latest fighter jets is seen as a thing that would give a possible enemy an advantage.Makes a lot of sense to everyone as these things might have to protect us one day.The questions that remain are:If humainty is a child, then how old are we now or when do we graduate?If there is a collection of secret and old knowledge then who owns and controls it?What would it take to force the release of all the things people actually created for a better world and not to be locked away?As funny as it might sound but one answer to all these questions would be to do nice orund trip in your Repulsine.Fly over ever single country in this world.Let their guided missle and what not chase you and once enough show then how quickly you can make a 180° turn to get behind them.So called unimportant countries might ignore you and the people only enjoy a nice show.Those powerful enough will fear you and think it was "the other side" showing their superiority.Once done with your round they all will have to realise there is a new power that is at the helm now: Knowledge and understanding.No more secrets, a repulsine for everyone who wants the plans to build one.A new world would start.Ever thought about that when wondering why all these "Aliens" we see in their ships in our skies never land to say hello ? ;)Even if they would be Aliens and not just some human pilot in some experimental craft:Shouldn't this demonstration of absolute power and control without any violence tell us something?The Repulsine need to come back to life to end all this UFO nonsense and Alien theories out there.You hear the sounds, see the ligh show and impossible abilities.And suddenly most if not all UFO sightings would have a common factor again.Just because the Repulsine is claimed to be lost and that it never actually worked despite film evidence showing the opposite does not mean there is no one using the technology.A working Repulsine available to everyone would also kill the doubt on so many other old inventors and "fringe" scientists.Science and physics would need to be redifined as would be able to find a lot of missing links.I know there is not only a lot of people out there trying to get what they can about the Repulsine but also that there are others who try to prevent this.You have a really easy time getting permission examine some old and histrically important artefact from a museum than getting just a hands on approch for what remains of the Repulsine in various places.Not even decent 3D scans will be allowed.Anything like just getting a tiny pipe cam inside is rejected with the excuse it could cause damage.If the thing is a hoax and never worked then why would it be so important to never touch or move it? ;)I recently got word that two of the remaining Repulsine "artefacts" were examined by the same group of "scientists".This happened in the late 80's and said scientists were claimed to have had acces to a collection of spare parts for the original Repulsine that was lost after the war.A private collector was also mentioned who denied all access but what he had in a secure storage facility appearently disappeared shortly after his refusal.Putting all the dots and hints together it would mean that someone in the late 80's was able to get literally everything that is left of the project in his hands.Those who claimed to have seen these scientists working on the Repulsine leftovers claim they used top notch technology to do so, including 3D scanners - and those were basically imossible to get back then for any uni out there...The laptops used were said to use touchscreens and were connected to all sorts of equippment.And they did it in almost total silence, like a group who studied a performance many times and knew exactly what do when and where without the need of many words.Professional in examining something unknown all all possible levels.I was unable to get any information on these scientist or who they worked for.But if you are one of them and readin this then I would love to hear from you!

Topic by Downunder35m    |  last reply