Helicopter main-rotor speed effects on far-field acoustic levels [microform] / Arnold W. Mueller, Otis S. Childress, and Mark Hardesty.
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| Other Authors: | , |
| Other title: | Helicopter main rotor speed effects on far-field acoustic levels. |
| Format: | Government Document Microfilm Book |
| Language: | English |
| Published: |
Hampton, Va. :
National Aeronautics and Space Administration, Langley Research Center, [Springfield, Va.] : [National Technical Information Service, distributor],
[1987]
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| Series: | NASA technical memorandum ;
100512. |
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| Item Description: | Cover title. "October 1987." |
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| Physical Description: | 18 pages : illustrations ; 28 cm. |
| Bibliography: | Includes bibliographical references (page 8) |
| Reproduction Note: | Microfiche. |