Somebody did a lot of work putting this together. The engine has to be made by the modeler-- you can't buy that from the store. Took about 3 years to build the engine. 9 cylinder rotary--- the old-fashioned kind, they don't make 'em like that anymore.
Getting the ignition switching right had to be a chore. The throttle is always open, there is no throttle control. Engine speed control was done by "blipping" the ignition switches--- which produced the weird sound when the pilot wanted less than full power. Sounds like the engine is about to quit while in flight--- that's just normal operation of a slowed rotary engine.
Making this work by radio control--- I gotta admit, that's really something.
[video]https://www.youtube.com/watch?v=QoCjro11ZQ0[/video]
That is really neat.
I've got a neighbor that's into RC planes. He's crashed a few over on me. Nothing so elaborate.