Instructables

Homemade orbital rocket?

Step 2: Step2

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ok so now we see the initial design, a liquid fueled ramjet rocket engine with o2 assist for upper atmosphere assistance. the fules I have chosen is "either" or starting fluid and "keyboarb cleaner"compressed air o2 for the accelorant and upper level assist.

now I was afraid at first to post this because of terrorist useing dirty weapons but because of its scale and the velocity of the fuel exiting the aerosol cans I dont think it is possible for it to actualy carry a dangerous payload.

here you will see all the devices I have planned for my orbital rocket

1st I describe the micro controler, a parallax BS2 homework board available in an education kit at Radio Shack for under -$100.

2nd I describe the calculator A TI86 z80 based programable graphing engineering calculator.avalible -wallmart$120 or a pawn shop under -$50.

3rd I describe the cellphone,maybe not everyone has one -under$100.

4th I describe the ignition system basicly a old flash cammera I modified into a "shocker" found here on i'ables and a automotive sparkplug

5th I describe the altimeter, accelorometer and FM Transmitter these are daughter boards available through parallax.com for accessories to the microcontroller sometimes used in hobby r/c planes roughly $50each.

6th the parachute trigger will have to be homemade or found for sale.

7th the engine and gas valvebody ,maybe a commercialy avaliable gasvalve from marine R/V propane heat under$200 if not it will need be machined 2-$600 estimated.

8th fuelbase manifolds homemade or machined under $200 estimated.

9th fuel & air must be calculated around $6 per can.

engine actualy came from a memory drawing of an engine I seen in an 1950's encyclopedia
the rest is prety much parts from a bobot kit from parallax,cell phone and a calculator I hobby with writeing programs for.

the can manifold bases and decision on fuels was all my idea.
 
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lockpick3 years ago
Someone has out a model rocket into space. (high power) I really want to do it too.
(removed by author or community request)
While solid state rockets are efficient up to about 1.5 miles of the atmosphere, anywhere above that it becomes not very efficient to use solid state. While solid state rockets work fairly well, they don't pack the same lasting punch that liquid state rockets do. Solid state rockets are more for ballistic rockets, traveling at an angle, toward a target on earth.

The solid state rockets can be compared to a shooting gun, with a lot of force packed into a short burst, while the liquid state fuels can be compared to jet engine on an airplane.
holy crap dude grade nine and u know all this i started to learn science and math like this in grade 6 but still not many ppl can do that like u and me lmao
chessdude33 years ago
I think it would be incredibly hard for your rocket to successfully make it into orbit. You need use H2O2 (standard professional rocket fuel) to get the most "bang" (H2O2 is illegal without a licence in large quantities, and the FBI will put you on their "watch list" when purchasing ANY amount of H2O2) Also, O2 wont be enough of an accelorant to get your rocket going. You need liquid O3 combined with h2o2 in a specific ratio.

Escape velocity is calculated by the formula:

ve = √2GM / r

where G is the universal gravitational constant, M the mass of the planet, star or other body, and r the distance from the centre of gravity.
In this equation atmospheric friction or air drag, is not taken into account.

Use this equation to make an estimate of how fast you need to get your puppy goin'. Also, you might want to consult a professional chemist, pyrotechnic, and/or physicist to make sure you don't blow your brains out.

NOTICE: You need to get a certain level of clearance in order to even launch a model solid state rocket with an engine over "E." I cannot even imagine the background checks, the questioning, the computer history searching they would have to do to you to give you the clearance needed.

Also, you would need an approved space to launch. The only place I can think of off the top of my head would be 3 miles off shore, in international waters.

Well, best of luck, and I hope my information helped you a bit. :)
chessdude33 years ago
I think it would be incredibly hard for your rocket to successfully make it into orbit. You need use H2O2 (standard professional rocket fuel) to get the most "bang" (H2O2 is illegal without a licence in large quantities, and the FBI will put you on their "watch list" when purchasing ANY amount of H2O2) Also, O2 wont be enough of an accelorant to get your rocket going. You need liquid O3 combined with h2o2 in a specific ratio.

Escape velocity is calculated by the formula:

ve = √2GM / r

where G is the universal gravitational constant, M the mass of the planet, star or other body, and r the distance from the centre of gravity.
In this equation atmospheric friction or air drag, is not taken into account.

Use this equation to make an estimate of how fast you need to get your puppy goin'. Also, you might want to consult a professional chemist, pyrotechnic, and/or physicist to make sure you don't blow your brains out.

NOTICE: You need to get a certain level of clearance in order to even launch a model solid state rocket with an engine over "E." I cannot even imagine the background checks, the questioning, the computer history searching they would have to do to you to give you the clearance needed.

Also, you would need an approved space to launch. The only place I can think of off the top of my head would be 3 miles off shore, in international waters.

Well, best of luck, and I hope my information helped you a bit. :)
keyuboard cleaner wont work try liquid hydrogen
what about the transeviers????????
cellphone wont work in space u wont have signal most likely
did u forget about the satelite disk??????????????/