Subjective field study of response to impulsive helicopter noise
By: Clemans A. Powell
Contributors: Langley Research Center; United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
Series: NASA technical paper -- 1833
Publisher: National Aeronautics and Space Administration, Scientific and Technical Information Branch; For sale by the National Technical Information Service]
Published: 1981
Place of publication: Washington, D.C; [Springfield, Va
Language: eng
Number of pages: 40
Subjects: Helicopters -- Noise
Notes: "Langley Research Center."

"April 1981."

Includes bibliographical references