H-13 Sioux

The events that led to the monumental achievements of the Bell Model 47 began during 1930, when an inventor named Arthur Young began private helicopter research. During the fifteen years he devoted to creat­ing the Bell Model 47, Young experimented with a variety of scale Hying models. After learning from Igor Sikorsky that a tail rotor would counter torque, Young concentrated on improving stability. After numerous experi­ments, he invented a stabilizer bar which was linked directly to the rotor to function as a flywheel. This kept the action of the rotor blades independent from fuselage movement. The stabilizer bar solved the stability problem and became a traditional fixture on thousands of future Bell helicopters. Aircraft companies showed little interest in Young's ideas until a demonstration at the Bell Aircraft Company on 3 September 1941. At that time. Bell, which had been founded in Buffalo, New York by Lawrence Bell in 1935. had been actively producing P-39 Airacobra fighters. Larry Bell liked Young's concept and the two agreed to construct two prototypes, beginning in late November of 1941. Labeled Experimental Model 30s, they were proof-of-concept predecessors to the Model 47. A small group of engineers broke away from the main plant in June 1942 and converted an old garage in Gardcnville, New York into Bell's first helicopter plant.

NO PASSWORD

All my books in one folder is here!!!

!!!No Mirrors below, please! Follow Rules!