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HELICOPTERS
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keywords:(HELICOPTERS)
Economic considerations of transport helicopter
Economic considerations of transport helicopter
Economic considerations of transport helicopter
One-dimensional, compressible, viscous flow relations applicable to flow in ducted helicopter blade
Design proposal for military helicopter
Some economics of helicopter -- Present and future
Longitudinal flying qualities of several single-rotor helicopters in forward flight
GE opens test facilities for jet-propelled helicopters
Accelerated testing of helicopter drive mechanisms