Reduction of high-speed impulsive noise by blade planform modification of a model helicopter rotor
By: David A. Conner and Danny R. Hoad.
Contributors: Hoad, Danny R.; United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch.; Army Research and Technology Laboratories (U.S.). Structures Laboratory.; Langley Research Center.
Series: NASA technical memorandum -- 84553; AVRADCOM technical report -- 82-B-6
Publisher: National Aeronautics and Space Administration, Scientific and Technical Information Branch; For sale by the National Technical Information Service]
Published: 1982
Place of publication: Washington, D.C; [Springfield, Va
Language: eng
Number of pages: 58
Subjects: Acoustical engineering.; Rotors (Helicopters); Helicopters -- Testing.
Notes: "Structures Laboratory, AVRADCOM Research and Technology Laboratories."

"Langley Research Center."

Distributed to depository libraries in microfiche.

"December 1982"--Cover.

Subject category 71.

Includes bibliographical references.