June 26 2004,
We started with about 8 bar /120 psi.
The rocket is the repaired 9 liter rocket with rounded top, airflap release mechanism.
A good liftoff with a popping sound and a apogee height from about 200 meters.
The rocket is almost invisible on its way up.
But around apogee you'll see the chute release as a tiny black spot in the sky and the rocket falls back to earth.
In the back you hear my son Mike who lost track of the rocketsay : "Whoow ik zeen um neet" in our local dialect.
After this successfull launch we tried to increase the pressure but at 130 psi, it blew once again.
The launcher tie warp mechanism was damaged, almost all the tie wraps were cut in several pieces.