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Hubschrauber
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Aerodynamic analysis of gyroplane rotating-wing system
Kay 331 gyroplane (British), all-metal single-seat light rotor plane
Gyroplane -- Its principles and its possibilities
Aerodynamics of Wilford gyroplane with special reference to maximum lift coefficients
Aerodynamics of Wilford gyroplane with special reference to maximum lift coefficients
Wind-tunnel tests of 10-foot-diameter gyroplane rotor
Notes on problems and progress of gyroplanes
Contribution to aerodynamics of rotating wing aircraft
Reduced In-Plane, Low-Frequency Noise of an Active Flap Rotor
Variable rotor speed control for an integrated helicopter/engine system