Step 4: Landing!

For this part of the Challenge I need away of landing lego people safely on the ground with out breaking there little plastic bones. or the payload for that matter.

Instructables and comments entered to this challenge must NOT be stupid out unable to build
reverse water rocket thrusters could be an option for me as long as there not stupid or unable to build
i know how you could have a 'bracing system'. <br> <br>ok, you have two bottles, one smaller, connected by elastic bands., which are taught when normal, but take the shock off impacts ect
oh, wait, nevermind....two years late....oops
<p>lol 4 for me</p>
i did a project on water rocket..made the model and mathematical formulations and simulation using matlab...and i did experiments too with different amount of water and averying pressure...it was superb ...any chance i can contribute here...so that i can get certificate or something :)
The contest has ended. I will probably have the certificates and video to you by early to mid September
Any videos of the flights available yet?<br />
Yes, on step seven... I will hope to get an youtube acount in the near future so&nbsp;I can post a lot more there. Thanks for your website, its brilliant. I would also like to thank you for the polaron' series of rockets.. which i have begun to make... on my other instructable 'professional water rocket guide'.<br /> <br /> Thanks<br /> <br /> Oscar
You have uploaded a Windows Movie Maker project instead of an actual video file. I can't view it because the project is looking for the original files. Other than that, awesome project!
sorry, i thought i had done "save to my computer" as an AVI. I will change it now
I will put the video up on the instructable this afternoon as the email provider won't let me send it... For people in America that might be tomorrow Thanks oscar
I could so do this. I mean.. I have done this before!
Cool if you want to join the group just go to <br/><a href="http://www.instructables.com/group/waterrocketchallenge/">http://www.instructables.com/group/waterrocketchallenge/</a><br/>
Ah... but that's the thing. When is the deadline? Idk how soon I will be able to work on this.
I deeply sorry but your email doesn't seem to work? It has worked with the other contributers but there was a failure with yours. Is it that you email provider can't take attachments? thanks Oscar
o.O? I don't know.... I use yahoo. I use attachments all the time... which email did I give you? (PM me, don't reply as a comment so people can't see my email)
25th august
why dont u just go out and BUY a rocket much more eaiser and less trouble to build and there are ones with payloads that u can put stuff in.
Because the is instructables were you make things plus it's probaky cheaper to make a water rocket and i dought the rockets that you buy are water rockets
yea but arn't u a pyromaniac haha no but seriously it only like 20 dollars for a rocketthat does wat ur asking for.
dude ur not getting the point. the point of doing all of this is the fun of building and launching it. not buying one in the store.
Ok watever just shut up about it hes already built it its just the way people prefer thing i personally want a store bought item that is not jerry riged not saying that oscarthompsson's rocket is its just i really dont want a rocket that i have to make outta scrach k got it?
Not for the payload I'm trying to carry
wat r u trying to carry
rc car about 7 cm long 4 cm wide parachute attimeter and a camera
Y it seems pointless go outside and go mountainbiking.
It's for fun
its too much work and no offence it seems lame
I've all ready got half of the things sorted out
Oh well then do it idk
can you add parachute?
What do you mean?
I have an instructable, with the problem of trying to escape the gravity of Mars after landing Astronauts there, for them to return to Earth after their mission has finished . There is also docking problems etc . I was going to turn water into Hydrogen and Oxygen for Space Flight .Go to this Instructable :<br/><br/><a href="http://www.instructables.com/id/How-Astronauts-will-Travel-To-Mars/">http://www.instructables.com/id/How-Astronauts-will-Travel-To-Mars/</a><br/>
Genisis II..... on launch pad
As for a recovery system, there are a few tried methods. My favorite method is the &quot;squashed balloon&quot; method. It is simple and will most likely work.<br/><br/><a rel="nofollow" href="http://www.h2orocket.com/topic/balloon/balloon.html">Here's a link to a site with the method demonstrated</a><br/><br/>Basically how it works is that the pressure from the rocket holds the end cap on tightly, so tight in fact that the air filled balloon that is placed between the end cap and the rocket is squished and doesnt move the cap off of the top of the rocket. In order for the cap to be pushed off of the rocket, the rocket must expend all of its air and water (becoming less compressed and leaving the rocket with a slightly smaller diameter). <br/><br/>Now this is where the balloon comes in handy. The balloon continues to push with the same force as it did before the launch, but the difference is the pressure between the end cap and the rocket. The balloon (hopefully) will push the end cap off at the time the rocket is at the top of its path.<br/><br/>It's a little difficult to explain, but the site that I have linked has a nice animation showing what happens along with a more in depth explanation. It even shows how to make the rocket (which I doubt will be helpful on instructables). Hope this has helped spark some ideas.<br/>
Thanks i just read through all of it.... What im confused about is that surely the end cap/nose conewould blow off durig pressurisation. I ether not got it or theres a bit im missing? Thanks Oscar
The nose cap is nearly the same size as the rocket, so the balloon wouldn't "pop" it off, it would slowly slide off the top. Also the balloon isn't completely filled so it is extremely easy to smash together (to the point of being unable to break it by stepping on it.
I have made a certificate for you do you want you real name on it on your member name on it?
It doesn't matter, I would appreciate either.
Thank you ,... If you want to look at the introduction this is what you will get even if ur idear doesn't get used. If you want to by a member of the group for this please go to. <a href="http://www.instructables.com/group/waterrocketchallenge/">http://www.instructables.com/group/waterrocketchallenge/</a><br/><br/>thanks <br/><br/>Oscar <br/>
It sounds to me like you need something for a school project and can't be stuffed doing it yourself.
No I'm doing it for the 40 th anniversary of the appolo missions
Can i colaborate? i have some nice ideas
Year sure... What are they<br/><br/>if you would like to join the group for this please go to <a href="http://www.instructables.com/group/waterrocketchallenge/">http://www.instructables.com/group/waterrocketchallenge/</a> <br/><br/>If your idears are valid you will revive all of the things mentioned in the intro<br/><br/>thanks<br/><br/>Oscar <br/>
Ok thanks! And the wing design is what i want to help with
Through my experience with water rockets, I have discovered several websites for water rockets.<br/><br/>Air Command Water Rockets<br/><a rel="nofollow" href="http://home.people.net.au/~aircommand/">http://home.people.net.au/~aircommand/</a><br/>This website has mission logs and instructions on building various things for the rockets, like parachute deployment devices and recovery systems. They have also built their own fleet of rockets.<br/><br/>Dean's Benchtop: Sim Water Rocket<br/><a rel="nofollow" href="http://www.et.byu.edu/~wheeler/benchtop/sim.php">http://www.et.byu.edu/~wheeler/benchtop/sim.php</a><br/>This is an online simulator for 1-bottle rockets. You can input various info, like rocket weight, bottle dimensions, and pressure.<br/><br/>Unfortunately, the Water Rocket Index was permanently shut down last week. :( <br/>This was one of the better water rocket websites.<br/>
Air Command Water Rockets<br/><a rel="nofollow" href="http://home.people.net.au/~aircommand/">http://home.people.net.au/~aircommand/</a><br/>This website has mission logs and instructions on building various things for the rockets, like parachute deployment devices and recovery systems. They have also built their own fleet of rockets.<br/><br/>They also do I'bles here... Don't send ppl away. Their i'ble work is great too.<br/>
Thank you... You will also recurve all the things mentioned in the intro of the instructable if you would like to join the group for this please go to <br/><a href="http://www.instructables.com/group/waterrocketchallenge/">http://www.instructables.com/group/waterrocketchallenge/</a><br/><br/>Oscar <br/>
I forgot to mention that Air Command has instructions on building secondary, break-away boosters for water rockets.
Year I'm using drop away boosters but there different to air command... There an instructable that I made called professional water rocket guide whichshows you how to make them
So wait... you want us to do all the work designing a rocket for you with the stated restrictions so you can use it for a challenge and take the credit??

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