[cdavenport]

I saw that Mythbusters episode...GREAT!

On another note. I noticed no mention of parachute recovery. Any reason you are not using chutes to recover the stomp rockets? When I was a science teacher, we did the water launch rockets which was huge fun!. Some of the more enterprising students wanted to employ chute recovery systems.

So, I helped them design drag flaps that would lie flush to the nosecone during launch. But, as soon as the rocket reached its apogee, the flaps would be free of air pressure, spring out, create drag enough to pull the nose cone off and deploy the parachute.

Of course, sometimes, the rocket would follow a ballistic trajectory and crash rather spectacularly into the ground! Either way was great fun!

Oh yes, parachute and chute cord material: dry cleaner bags or ultra thin trash can liner bags and single strand nylon string. Very light, but very efficient.