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The wide-velocity-range (WVR) reusable flight vehicle, due to its extensive flight airspace and broad Mach number range, is challenging to select a fixed working state as the design point. Moreover, due to a large number of factors affecting the overall performance of the vehicle, as well as the varying impact and sensitivity of these factors in integrated air-launch system design, it has brought considerable difficulty to the integrated optimization design. A single-stage-to-orbit (SSTO) reference trajectory for the WVR reusable flight vehicle is established, conducting sensitivity analysis on key parameters from three major aspects of design: aerodynamics, propulsion, and structures. Through perturbation analysis of the reference design parameters, the impact of different parameters on the overall performance of the flight vehicle under varying operating conditions is comparatively analyzed. This successfully identifies several design parameters that significantly influence the vehicle's performance. Finally, based on the sensitivity analysis results, the study makes reasonable recommendations on subsequent optimization directions for the wide-speed-domain reusable flight vehicle from four aspects: schematic design, aerodynamics, propulsion, and structures.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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