Hardware Store Hybrid Rockets- Part 1:Polyethylene Hybrid Ro

[Squatchmo11]

Wow great work guys! Very impressive! Most understanding dad on the planet?

[bendlomand]

How did you guys drill out the steel end caps?

[cellavb447]

This video was made in 2007 and there will not be a sequel.

A short google search will show you that Eric Stackpole, one of the boys in this video, is now working at NASA.

This goes to show what a little bit of hard work and perseverance can achieve.

To any other prospective rocketeers:

Keep at it. The sky isn't the limit.

[jylounen]

Oh my god i want to see part 2 :D

[soh22]

this is jst so freaking interesting! :D

[csm9420]

where did you get liquid oxygen?? What is that red can?

[jpourkav]

yo what kind of regulator did you use on those red oxygen bottles?

[ashman102]

that was fucking awesome. I saw a show that used toffee, peanuts and alumium oxide whilst using nitrous oxide as the gas and they managed to propel it to 200mph in 250m.

[sovietscud]

Outstanding, Simply outstanding. You've taken a good perspective on how you've approached this. Calculations are essential to success. I am Very impressed.

[RocketChristmasTree]

This is totally awesome. Please discuss your lighting procedure in more detail. Are you throttling back your oxidizer until the flame recedes into the tube?

[Yamhal]

nice work guys

[GenevaSuspension]

A quick study in chemistry would have forewarned you of the potential energy of the tar...you're lucky it didn't blow-up and take you and your friend out.

[Originalsunrunner20]

A simple measurement of a materials combustion heat output is of little use to 98% of the world. In order to judge pressure in the combustion chamber you need to know at least a half dozen variables and go through numerous complex equations.

[GenevaSuspension]

Given the thrust these teens are generating, they would fall into the 2% that should familiarize themselves.

[scienceprimo]

agreed

[ironmagma]

a disposable tank intended for what?

[Snowboard133]

let them fly!! =)

[fireball676]

so wait...let me get this straight...you put a steel pipe with roofing tar coated around it in another steel pipe, used an endcap, and a pressure source and you achieved burn...how did you suspend the steel pipe inside.

[flamesholder]

Nice work guys. I am truly impressed by your systematic approach and respect to safety.

I am thinking about building a hybrid rocket engine myself and you video is actually very inspiring. I am thinking also about making propane/N2O rocket, but in more distant future. I think that I can use propane for regenerative cooling of the combustion chamber.

[tomcornwall83]

good stuff.

[nicksynnz]

Good thrust but I am amazed you guys didn't blow yourselves up....keep on going and post more and more as you get better.

[peeeete]

great video and research looks really fun

[crackcroc]

you guys are extremely smart and that was a great video

[jmar1371]

But keep up the great work!

[jmar1371]

Use ultrafine iso-molded graphite for your nozzles. Check eBay for poco graphite. Add a hi-temp grease filled fitting to your combustion chamber, and run an oil filled line to a pressure transducer and a DATAQ to your laptop. Use a loadcell and amp on the second channel to get thrust data, but pressure data will tell you more about your motor.

Oh, and test them remotely, PLEASE. Standing next to a running, experimental motor isn't a great idea. When things go bad, they do so very quickly.

[DancingArtichokes]

My good sir, you are a credit to society, i mean that in every sense of the world. I to (not being smug) am a smart young man destined for good things. But we need more brilliant young minds like yours to solve our current problems in the world.

[SARGMAJOR]

looks like that tar rocket would make one hell of an thermic lance.

[huggybear100]

thats amazing, the last test is so big it looks fake, but i know its not, its just unreal haha , i soon hope to five into the wonderful world of hybrid rockets

[dibbuck]

This is a fabulous video - keep going dudes! I hope your recent slowness is cause only by temporary extreme sexual exertions.

[fly2000jtb]

Did you make the part 2 of this and the sand box firing of your motor? Wish you would the last one was GREAT !!

[g4tman]

almost 2 years from this video. when are you gonna upload the sandbox thing?

[KnightChatX]

Think of it like stepping on a weight scale. Same concept used for rocket engine.

[KnightChatX]

How you safely test rocket's amount of pressure force is put rocket upside down vertically facing downward and engine up, and use a scale, as the engine pushes it pushes the scale downward, this is how you get a measurement of the amount of pounds force being applied that the engine gives off.

[PepeVonBraun]

Really nice rocket,,,but i have 1 question:

How do you adapt the benzomatic Oxygen tank to a hoseand the hose to the pipe?

Congrats Jose Murra

[tomanyasses]

you guys got guts if you dont hurt your seleves its very very hard to do anyhting from scratch so your doing great nice video

[m3sca1]

now thats rocket science-love your work 5 stars from me and favored.

[LookAtMyBalls]

I slammed you guys before for saftey on another video, but now I see what you've really been up too. Stay safe boys, you're doing great work. Just ALWAYS use barriers and distance when testing.

[frostypaws12]

i can't afford that much o2, my lowes sells them for like $8 a piece. but i like your rocket! :)

[pitbike2006]

for 1L of o2 over hare in the uk it woeks out $30 a bottle so think your self lucky lol

[frogy1752]

I was wondering from the beginning why you didn't try liquid tar\asphalt for the fuel... I've was experimenting with tar/N2O hybrids quite a bit during the hotter months... Maybe once spring arrives I'll post a video of it. As of now it's about 5°F.

[cheeseboat15]

Bravo!! An amazing video. I love how it was done

It was informative and intellectually stimulating. I implore you, please do go on.

I also liked the design of your containment vessel. It is well thought of. Hear me now Youtubers, these men are on a road to fame

[rapidrory]

wen is it going to be continued?

[geohot]

You guys are very good. I plan to build hybrid motors in your footsteps.

[pitbike2006]

and me

[smellyicecreem]

shit!!!! dude you know how mutch i would like to do that you people r my idles seriously

[hobithole]

wow your narration beats that of kipkay

[damcorp]

does anybody know how much one of those oxygen cylinders cost?

[iluvme162]

seven bucks at a harware store

[pitbike2006]

about $8 in america over hear in the UK it workes out $30 a bottle LOL hope your self lucky

[aquaaura56]

you guys are nucking futz wow!!! i though i had balls but you are truly playing with gasoline. pleas be careful and bring us some more fun rockets.

[InvalidMemberAccount]

great work!!!!

[jayran07]

hi i want to see your next episode its so great!!!!!

[kartkid100]

sweet, when is the sequel? (part 2)

[girrrrrrr2]

you guys rule!!!

[KLThomie]

nice vid I must say. intresting to see how "simple" rockets can be build. Im starter in rocket propulsion and I did it the other way,solid oxidiser and liquid fuel.Was more powerfull then just sugar fuel(fuel = lock defrost).I only needed to add a little bit sugar to get the damn thing working,after that my Knex back ax broke and the kart ended pile of shit.Keep posting experiments!

[blactek]

Hi Guys,

Great work and welcome the exciting world of hybrid rocketry. What you have discovered is well known re the difference between polymer fuels and fuels such as tar and paraffin waxes. Polymers require a large volume of heat to be partially vaporised and mixed with oxidizer to combust.

[blactek]

Tar and wax actually form a liquid melt layer which can more readily mixed with the oxidizer for combustion this has been named "Droplet entrainment". the result is much faster fuel grain regression rate (around 6mm/sec as opposed to 1mm/sec for polymers )

[blactek]

You should grab yourselves a Paintball cylinder and get hold of some Nitrous Oxide to use for the oxydizer. Gaseous oxygen is not suitable for developing any meaningful thrust/ density impulse. Nitrous can be obtained quite easily from motor performance shops, and you can buy empty cylinders online quite cheaply check out NOS as brand. You can also get yourselves solenoid valves for controlling the Nitrous..

[RISEskateteam1]

I really need the plans to make that thing could you post them on or something

[jesus1572]

dame this guys got to show me what they use im a rocket engin bulder an i never cam close to something like that in my pass 9 yr iv done this need to post how they did this with roffing tar

[thewelderdude]

arent those red oxygen bottles about 8 dollars apiece? try using oxygen from a cutting torch. at least in Illinois it would be much cheaper. a 20 cubic foot oxygen refill costs about 25 dollars.

very cool.

[Zatoichi0710]

Damn man! What would our world be without geeks?!?!

Good show!

[bobby32123]

HELLA TIGHT! i am so jealous of your rockets!

[bobhaha]

A+ on the video and A+++++++++++ for the rocket

great work plz keep me posted for the next video

[NapkinsAndDiagrams]

Great job! Both on the rockets and the video work! I look forward to more videos from you.

[abeasu]

Man, I love being a geek :)

Nice work guys!

[snabadi]

it was really cool!!!!

[4WHEELEDCAR]

Here is another great one W W W . a m e r i c a n e n e r g y i n d e p e n d e n c e . c o m DO NOT ATTEMP ANY EXPERIMENTS WITH HYDROGEN PEROXIDE UNLESS YOU HAVE FULL UNDERSTANDING OF THE MATERIALS ANF ARE GUIDED BY PROFESSIONALS. THIS INFO IS FOR READING OMLY

[4WHEELEDCAR]

Frozen Hydrogen Peroxide used on Black Horse spaceplane For more info see w w w . a s t r o n a u t i x . c o m / p r o p s / h 2 o 2 u d m h . h t m

[physicmad]

WOA! unexpected at 4:10 LOL

[CrashOrgasm]

Fantastic, keep up the good work ! 

play safe !

[killacam44]

keep up the good work, this looks very professional! cant wait for the next vide!

[XboxDEgamer]

2:15 looked and sounded like my farts =) great vids

[yomoma186]

i love rockets but i have only used composite and black powder motors

u guys should try useing paintball CO2 tanks insted of the steel pipes, its easyer

[swellfuel]

My friend and I did experiment like this in my friends garage when we where teens. Bad things that you don't expect can blow up in your face. Be careful. Check out my invention videos.

[98209276]

mate this is great. you can also get the same result from molten sugar that hardens in much the same way as the tar. much easyer to obtain. have any of your rockets exploded?

[mark8v35]

Have you done anything since January? Do you guys know what kind of thrust you're getting? You should get a load cell so you can figure it out.

Peace

[mark8v35]

Man, you guys are lucky you didn't blow any fingers off or anything. Do you know what hybrid rockets are??? Controlled pipe bombs. The second your nozzle throat gets clogged with anything, BOOM. Rocket casings become shrapnel. That's what control rooms are for.

I enjoyed the video - I'll have some video up in a week or so of our hybrid motor at my University.

[DaveMyrra]

That`s totally awesome!! This is going in my favorites!!

[kharimateen2002]

you guys are the shit I hope you don't die before you are millionars

[MrRobot]

THAT IS GREAT! good luck.

[SAscottwal]

Scorgan - Our robot has rockets.

Awesome video, proud to have found it by searching Scorgan on Youtube.