L950 PVC Sugar Kno3 Rocket

Information on constructing this engine can be found at www.inverseengineering.com This flight on May 27, 2007 was amazing except the fins sheared off as the rocket approached supersonic speeds.

Category:

Science & Technology

Tags:

• aviation
• space
• diy
• electronics
• sugar
• kno3
• amateur
• rockets
• pvc
• rocket
• engines

[logicbranch]

Question: at what point, after graduating from Estes kits and designing bigger units, does the rocket need an actively self-adjusting guidance system to keep it flying vertically?

[solidskateboards]

@logicbranch It never does, if it's built right, it will fly vertically just fine.

[BaddaBigBoom]

Excellent stuff - love it !

I've just ordered a 25 kilo sack of KNO3, I've been reading up on the mixing of the 'rocket candy' and have some previous experience with smaller home made rockets. We don't have big areas of desert like this here in the UK but there are some wide open spaces - wish me luck !

[solidskateboards]

@BaddaBigBoom Good luck!

[solidskateboards]

It was stable until it went supersonic and the fins ripped off. Oh well.

[solidskateboards]

@youngmoneycash10 so ignorant

[mwilson14]

@logicbranch

Now on the other hand, if you want a rocket that will fly perfectly straight horizontally, then a heading hold gyro and fast digital servo for each control axis would be a start.

[TheLittleWorldofGaz]

wow! love it!

[soverato3]

why not building a liquid fueled rocket? im working on an liquid engine right now..

[david1513]

a lot of crazy things happen to a rocket when it aprouches super sonic speeds or goes though the sound bearea frist theres a ring of pressure around the rocket just as it goes thru sound, if the tube is not strong enough it crushes the tube and that little wobble as its going up is caused by it hiting the sound beara its like its bumping into it if the motors fast enough it will pop thru the bearea if not it bounces off it a so call stall, but when you see that little wiggle its hit the breara

[david1513]

are you puting your rocket kno3 mix in a reloadable motor like areo tech? i was thinking of doing this will it work?

[youngmoneycash10]

actually if you read carefully you will see that i didnt say you supported anything

i was sugesting terrorists were watching the video thats totally different then verbaly emplying that someone supports terrorism you are accusing me of a false statment

it was a joke anyway relax my man