| タイトル | Optimization and gamma/theta guidance of flight trajectories in a windshear |
| 著者（英） | Wang, T.; Melvin, W. W.; Miele, A. |
| 著者所属（英） | Delta Air Lines, Inc.|Rice Univ. |
| 発行日 | 1986-01-01 |
| 言語 | eng |
| 内容記述 | Guidance schemes for near-optimum performance in wind shear are examined. The presence of a downdraft is assumed in addition to the horizontal shear. The takeoff problem is considered with reference to flight in a vertical plane. Trajectories for optimum performance in a wind shear are determined for different wind shear models and intensities. Methods of optimal control theory are used together with the dual sequential gradient-restoration algorithm for optimal control problems. Guidance schemes for near-optimum performance in a wind shear are developed, starting from optimal trajectories. These are gamma guidance, based on either the absolute of the relative path inclination, and theta guidance, based on the pitch attitude angle. These schemes are evaluated through numerical experiments in order to determine whether the resulting trajectories are sufficiently close to optimum and to compare these trajectories with those arising from alternative guidance schemes. |
| NASA分類 | AIRCRAFT STABILITY AND CONTROL |
| レポートNO | 86A49071 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/382921 |
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