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Failed Rocket Engine

video Failed Rocket Engine

It lit and burned but the nozzle blew out and so rendered the engine nearly useless as a device to provide thrust . . .still looked bloody cool though!

27 comments

Jun 15, 2008. 1:54 PMbillybobjhonson says:

lol the engine before you lit it looks like a tampon ha ha

Jun 15, 2008. 2:20 PM

Kaelessin (author) says:

o.O . . .*washes hands*

Mar 20, 2010. 7:47 PMbillybobjhonson says:

ill say

Aug 3, 2009. 5:29 PMcoolkid1234 says:

what was the point of it

Aug 5, 2009. 2:19 PM

Kaelessin (author) says:

this was just a test: new mix, new tooling, new fuse etc plus it's fun to witness the power of rocetry without craning your neck!

Feb 26, 2010. 9:15 AMKwitmeh3 says:

why mega video, i clik play and it pop up wit stuff.......

Oct 25, 2009. 3:44 PMRMConstruction says:

Oct 25, 2009. 4:40 PM

Kaelessin (author) says:

haha!

Oct 20, 2009. 3:44 PMPastTheVoid says:

maybe you could put it upside down next time?

Aug 21, 2009. 10:06 AMjunits15 says:

that was verry cool

Apr 2, 2009. 5:04 PMchainsawjames says:

looks like a tampon....

May 18, 2009. 6:49 PMDafroft says:

thats wat i was thinking

Aug 5, 2009. 2:19 PM

Kaelessin (author) says:

heh actually it's a long sheet of paper rolled into a thick walled tube since i'm too cheap to buy cardboard tubes.

May 18, 2009. 6:50 PMDafroft says:

lol was that tampon filled with gunpowder also the song isnt bad

Feb 6, 2009. 4:44 PMThelonelysandwitch says:

dude, What was the propellant? I want to know

Feb 6, 2009. 5:10 PM

Kaelessin (author) says:

in the immortal words of Prof. Jagger: "you can't always get what you want" if you search around for rocket propellants though you'll find more than enough info a safer (slightly anyway) starting point: try searching for "James Yawn"

Feb 7, 2009. 10:51 AMThelonelysandwitch says:

ok, just wondering.

Jan 19, 2009. 4:36 PMtemp says:

What's the propellant ur using? it seems a little to powerful to not be in my garage.=)

Nov 20, 2008. 1:55 PMbylerfamily says:

What was the nozzle made out of?

Nov 20, 2008. 6:20 PM

Kaelessin (author) says:

bentonite (aka kitty litter)

Jun 14, 2008. 8:01 PMJohn Smith says:

(this isnt really an instructable) Is this core-burning? If so, you might try end burning. Try a larger nozzle orifice. Try slower fuel.

Jun 15, 2008. 9:33 AM

Kaelessin (author) says:

i've since fixed the issue . . .i had a 4mm nozzle and upped it to 5mm and now it works like a dream. I've also switched to the KN03/Sugar version since it's easier(and significantly safer) to make and also cheaper. (btw: i realize that this is not an instructable which is why i posted it as a video and not as an instructable. Thanks for the concern tho)

May 29, 2008. 1:48 AM

thematthatter says:

im no rocket scientist, but my guess it would work a heck of a lot better if you had the thrust pointing down instead of up.

May 29, 2008. 8:25 AM

Kaelessin (author) says:

lol yes you're completely right but this was a test only and I didn't want a potential fireball flying through the neighborhood so I "anchored" it with the nozzle up. looking back and seeing how my nozzle blew out i probably wouldn't have had an issue of it going too far but best to be on the safe side eh?

May 28, 2008. 10:25 PM

Kaelessin (author) says:

I won't say what it is exactly since i didn't actually make it completely from scratch and I don't want to be an advertiser but if you must know I can hint . . .it's a derivative of black powder(this is actually grey though)