Originally Posted by er, me...
Sir George Cayley did some calcs for his rotorwing ideas and realised power-to-weight was way below that required. I've seen a museum for some steam powered fixed wing model's in south UK - but that's about it.
Just remembered the model was built by John Stringfellow, and showed beautiful attention to detail.
Maybe i need to give my "hat source" bottle a shake, Slowrotor, since there have been a few more attempts at steam aircraft than i thought:
http://www.flysteam.co.uk/
Still, must admit the idea of offseting payload against boiler water makes little sense to me....
Mart