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ANNUAL REPORT SMITHSONIAN INSTITUTION, 1962 



Figure 1. — Cayley helicopter model, bent-bow propulsion. 



models, and even today probably powers many more "airplanes" than 

 any other type of powerplant. It is of historical interest to note here 

 that in the first detailed accomit of their pioneer flights the Wright 

 Brothers attribute their early interest in flying to toy helicopters 

 powered by rubber bands. 



The first successful flight by a model airplane powered by other 

 means than rubber bands is said to be that of DuTemple in France, 

 1858, using a clockwork motor. Steam power was later used by this 

 same inventor, but there is no authentic record of successful flight. 

 A compressed-air-driven model by Victor Tatin (France) made cir- 

 cular tethered flights in 1879. 



Figure 2. — Penaud Planaphore, rubber-band propulsion. 



