Cover image for Evaluation of helicopter noise due to blade-vortex interaction for five tip configurations
Title:
Evaluation of helicopter noise due to blade-vortex interaction for five tip configurations
Author:
Hoad, Danny R.
Personal Author:
Publication Information:
Washington, D.C. : National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [Springfield, Va.] : [For sale by the National Technical Information Service], 1979.
Physical Description:
77 pages : illustrations ; 27 cm.
General Note:
"Structures Laboratory, AVRADCOM Research and Technology Laboratories."

"Langley Research Center."

"December 1979"--Cover.

Subject category 71.
Language:
English
Format :
Book

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TL521.3 .T4 NOS.1600-1610 NO. 1608 Adult Non-Fiction Central Closed Stacks-Non circulating
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