These are the latest three rockets from art applewhite, and probably my last build for this year. The shiny metallic one is a 29mm cone rocket. It breaks apart for recovery. Two helix style rockets were also built. I need to make a special launch pad for them: they launch from a 1 inch long rod, and need a very stable pad that is just at ground level. One is 18mm and the other is 24mm.
Here is a video of a HUGE monocopter rocket.