Two-dimensional Fourier transform applied to helicopter flyover noise
By: Odilyn L. Santa Maria.
Contributors: Langley Research Center.; United States. National Aeronautics and Space Administration.
Series: NASA/TM -- 1999-209114; NASA technical memorandum -- 1999-209114.
Publisher: National Aeronautics and Space Administration, Langley Research Center; Available from NASA Center for AeroSpace Information
Published: 1999
Place of publication: Hampton, VA; Hanover, Md
Language: eng
Number of pages: 52
Subjects: Fourier transformations.; Harmonic analysis.; Helicopters -- Noise.; Noise control.
Notes: "March 1999."

"Performing organization report number L-17827"--Report documentation page.

Includes bibliographical references.

Performed by NASA Langley Research Center for the National Aeronautics and Space Administration WU 581-20-31-01