[PDF] Full Hovering And Low Speed Performance And Control Characteristics Of An Aerodynamic Servocontrolled Helicopter Rotor System As Determined On The Langley Helicopter Tower Download eBook

Hovering and Low-speed Performance and Control Characteristics of an Aerodynamic-servocontrolled Helicopter Rotor System as Determined on the Langley Helicopter Tower

Author: Paul J. Carpenter

Publisher:

Published: 1950

Total Pages: 642

ISBN-13:

The rotor system investigated is a servocontrol type with blades fastened rigidly at the hub and twisted outboard by auxiliary airfoils called flaps to obtain pitch control.

Technical Note - National Advisory Committee for Aeronautics

Author: United States. National Advisory Committee for Aeronautics

Publisher:

Published: 1950

Total Pages: 910

ISBN-13:

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NASA Technical Note

Author:

Publisher:

Published: 1961

Total Pages: 806

ISBN-13:

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Wind-tunnel Studies of the Performance of Multirotor Configurations

Author: Richard C. Dingeldein

Publisher:

Published: 1954

Total Pages: 650

ISBN-13:

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The power requirements measured in static thrust and in level forward flight are presented for two helicopter rotor configurations. One is a coaxial rotor arrangement having the rotors spaced approximately 19 percent of the rotor radius; the other is a tandem configuration in which the rotor-shaft spacing is 3 percent greater than the rotor daimater and in which the rotors lie in the same plane. The experimental meausrements are compared with the results of calculations based on existing NACA single-rotor theory.