The present report deals with a number of the main problems requiring solution in the development of helicopters and concerning the lift, flying performance, stability, and drive. A complete solution is given for the stability of the helicopter with rigid blades and control surfaces. With a view to making a direct-lift propeller sufficient without the addition of auxiliary propellers, the "flapping drive" is assessed and its efficiency calculated.
Helicopter problems
1937-05-01
Miscellaneous
No indication
English
NTRS | 1948
|SAE Technical Papers | 1945
|Helicopter first-flight problems
Engineering Index Backfile | 1953
|Helicopter flight vibration problems
Engineering Index Backfile | 1955
|Problems of helicopter powerplants
Engineering Index Backfile | 1947
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