Effect of compressibility on the hovering performance of two 10-foot-diameter helicopter rotors tested in the Langley full-scale tunnel /
by Joseph W. Jewel, Jr., and Robert D. Harrington.

Description

Main Author

Jewel, Joseph W.

Related Names

Harrington, Robert D.
United States. National Advisory Committee for Aeronautics.
Langley Aeronautical Laboratory.

Language(s)

English

Published

Washington, D.C. : NACA, 1958.

Subjects

Aerodynamics > Aerodynamics / Research.
Rotors (Helicopters)

Summary

Summary: An investigation of the effects of compressibility on the hovering-performance characteristics of two 10-foot-diameter helicopter rotors having solidities of approximately 10 percent has been conducted in the Langley full-scale tunnel. One rotor, having NACA 0012 airfoil sections, a plan-form taper ratio of 3/1, and -8À of twist, was tested to a tip Mach number of 0.95 and a disk loading of 16 pounds per square foot. The other rotor had NACA 64-series airfoil sections, tapering to a 6-cent-thick tip, a plan-form taper ration of 3/1, -16À of twist, and was tested to a tip Mach number of 1.0 and a disk loading of 20 pounds per square foot.

Note

"Declassified May 29, 1959"
"Report date April 21, 1958."
Also available in electronic format.

Physical Description

43 p. : ill. ; 28 cm.

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