Somewhere I have the drawing of a balsawood flying saucer that uses peripheral vanes to generate lift and the rotational energy is generated by two Jetex motors and I have a flying saucer whose lift is generated by a small Cox glow plug engine with a propeller.
The glow plug engined one has mesmerised many a model flyer at the sites where I've flown it. It looks like this:
I LOVE those Thai whirlygig rockets! The happily anarchic atmosphere, the occasional explosions and the spectators running for cover, along with the dense clouds of white smoke put me in mind of my and my brother's experiments in the garden with various kinds of tight containers and mixtures of sugar and sodium chlorate weedkiller! I could never understand why my Dad didn't notice that the weedkiller was disappearing or my Mum, the sugar being used up rather fast.
Our problem was always in creating a satisfactory ignition system, but our greatest success was a Maxwell House coffee jar lid, which we launched a good 100 feet into the air with a loud bang.