A wind-tunnel investigation of helicopter directional control in rearward flight in ground effect
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@ University of Illinois
Huston, Robert J
Description
Includes bibliographical references (p. 38).An investigation was conducted in the Langley full-scale tunnel to study the aerodynamics that produce directional-control problems for a helicopter with a tail rotor in low-speed rearward flight in ground effect. A helicopter model mounted close to the tunnel floor was tested in tail winds from 0 to 25 knots.
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Morris, Charles E. KLangley Research CenterUnited States. National Aeronautics and Space Administration
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