| 000 | 00918nam a2200241Ia 4500 | ||
|---|---|---|---|
| 003 | ALIACLIB | ||
| 005 | 20221018084435.0 | ||
| 008 | 210609s9999||||xx |||||||||||||| ||und|| | ||
| 040 |
_cAir Link International Aviation College _aAir Link International Aviation College |
||
| 082 |
_a629.13436 _bB75p |
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| 100 | _aBrentner, Kenneth S. | ||
| 245 | 0 |
_aPrediction of helicopter rotor discrete frequency noise : _ba computer program incorporating realistic blade motions and advanced acoustic formulation / _cKenneth S. Brentner |
|
| 264 | 1 |
_aVirginia : _bNational Aeronautics and Space Administration, _c1986 |
|
| 300 |
_a90 pages : _billustrated ; _c28 cm. |
||
| 336 |
_2rdacontent _atext _btxt |
||
| 337 |
_2rdamedia _aunmediated _bn |
||
| 338 |
_2rdacarrier _asheet _bnb |
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| 500 | _aNASA Technical Memorandum 87721 | ||
| 650 | _aAeronautics | ||
| 650 | _aAirplaines | ||
| 650 | _aHelicopter | ||
| 942 |
_cBK _2ddc |
||
| 999 |
_c1760 _d1760 |
||