Evaluation of helicopter noise due to blade-vortex interaction for five tip configurations
By: Danny R. Hoad
Contributors: 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: AVRADCOM technical report -- 80-B1; NASA technical paper -- 1608
Publisher: National Aeronautics and Space Administration, Scientific and Technical Information Branch; For sale by the National Technical Information Service]
Published: 1979
Place of publication: Washington, D.C; [Springfield, Va
Language: eng
Number of pages: 77
Subjects: Acoustical engineering
Notes: "Structures Laboratory, AVRADCOM Research and Technology Laboratories."

"Langley Research Center."

"April 1982"--Cover

"December 1979"--Cover

Subject category 71