Evaluation of helicopter noise due to blade-vortex interaction for five tip configurations / Danny R. Hoad.
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. : [Springfield, Va.] :
National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [For sale by the National Technical Information Service],
1979.
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| Series: | AVRADCOM technical report ;
80-B1 NASA technical paper ; 1608. |
| Subjects: |
MARC
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| 245 | 1 | 0 | |a Evaluation of helicopter noise due to blade-vortex interaction for five tip configurations / |c Danny R. Hoad. |
| 260 | |a Washington, D.C. : |b National Aeronautics and Space Administration, Scientific and Technical Information Branch ; |a [Springfield, Va.] : |b [For sale by the National Technical Information Service], |c 1979. | ||
| 300 | |a 77 pages : |b illustrations ; |c 27 cm. | ||
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| 490 | 1 | |a AVRADCOM technical report ; |v 80-B1. | |
| 490 | 1 | |a NASA technical paper ; |v 1608. | |
| 500 | |a "Structures Laboratory, AVRADCOM Research and Technology Laboratories." | ||
| 500 | |a "Langley Research Center." | ||
| 500 | |a "April 1982"--Cover. | ||
| 500 | |a "December 1979"--Cover. | ||
| 500 | |a Subject category 71. | ||
| 650 | 0 | |a Acoustical engineering. |0 http://id.loc.gov/authorities/subjects/sh85000596. | |
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