| タイトル | Effects of unsteady aerodynamics on rotor aeroelastic stability |
| 本文（外部サイト） | http://hdl.handle.net/2060/19770025134 |
| 著者（英） | Kunz, D. L. |
| 著者所属（英） | Army Air Mobility Research and Development Lab.|NASA Ames Research Center |
| 発行日 | 1977-09-01 |
| 言語 | eng |
| 内容記述 | The effects of unsteady aerodynamics on the stability characteristics of helicopter rotor blades were studied. A simple physical model of each blade was used together with Theodorsen, Loewy, and quasi-steady aerodynamics to derive the equations of motion. The stability analysis comparing the effects of using each of the three theories revealed some significant differences between the Loewy and Theodorsen results. These included increases and decreases in lead-lag damping, localized around integer lead-lag frequencies. It was also shown that the standard method of multi-blade coordinates must be modified for use in conjunction with Loewy aerodynamics. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 77N32078
NASA-TM-78434 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/181246 |
