Hovering and low-speed performance and control characteristics of an aerodynamic-servocontrolled helicopter rotor system as determined on the Langley helicopter tower

Paul J. Carpenter, Russell S. Paulnock
naca-tn-2086
May 1950


An investigation has been conducted with the Langley helicopter tower to obtain basic performance and control characteristics of an aerodynamic-servocontrolled rotor system. Blade pitch control is obtained in this configuration by utilizing an auxiliary flap to twist the blades. Rotor thrust and power required were measured for the hovering condition and over a range of wind velocities from 0 to 30 miles per hour. The control characteristics and the transient response of the rotor to various control movements were also measured.

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