| 000 | 00576 a2200241 4500 | ||
|---|---|---|---|
| 001 | 273113 | ||
| 020 | _a | ||
| 041 | _aeng | ||
| 080 | _aLNASA TP 3063 : 1990 | ||
| 245 | _aExperimental and analytical evaluation of efficiency of helicopter planetary stage | ||
| 250 | _a | ||
| 260 | _aWashington, D.C. | ||
| 260 | _bNational Aeronautics and Space Adminstration | ||
| 260 | _c1990 | ||
| 300 | _a20 p. | ||
| 300 | _c | ||
| 856 | _u | ||
| 490 | _aNASA TP 3063 : 1990 | ||
| 700 | _a | ||
| 650 | _a | ||
| 650 | _aGears, Transmissions, Efficiency, Power loss | ||
| 942 | _cPP | ||
| 942 | _2UDC | ||
| 999 |
_c228683 _d228683 |
||