| タイトル | Effect of lift-to-drag ratio in pilot rating of the HL-20 landing task |
| 著者（英） | Rivers, Robert A.; Bailey, Melvin L.; Jackson, E. B. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1993-10-01 |
| 言語 | eng |
| 内容記述 | A man-in-the-loop simulation study of the handling qualities of the HL-20 lifting-body vehicle was made in a fixed-base simulation cockpit at NASA Langley Research Center. The purpose of the study was to identify and substantiate opportunities for improving the original design of the vehicle from a handling qualities and landing performance perspective. Using preliminary wind-tunnel data, a subsonic aerodynamic model of the HL-20 was developed. This model was adequate to simulate the last 75-90 s of the approach and landing. A simple flight-control system was designed and implemented. Using this aerodynamic model as a baseline, visual approaches and landings were made at several vehicle lift-to-drag ratios. Pilots rated the handling characteristics of each configuration using a conventional numerical pilot-rating scale. Results from the study showed a high degree of correlation between the lift-to-drag ratio and pilot rating. Level 1 pilot ratings were obtained when the L/D ratio was approximately 3.8 or higher. |
| NASA分類 | SPACE TRANSPORTATION |
| レポートNO | 93A53738 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/314266 |
