The invention relates to a wide-speed-range variant gliding aircraft, and belongs to the technical field of variable-configuration unmanned aerial vehicles. The problems that in the prior art, aerodynamic heat generated in the hypersonic flight stage is difficult to bear, the mechanism is complex, the strength of the mechanism is weak, the speed domain crossing performance is weak, low subsonic flight is difficult to achieve, and the lift-drag characteristic is difficult to reach the high level are solved. In the hypersonic velocity stage, a waverider configuration is adopted, a high-pressure area generated by shock waves is fully utilized, and therefore lift force is maximized, and meanwhile resistance is minimized; in the subsonic velocity stage, the wings stretch out, the area of the wings is adjusted according to dynamic pressure to meet the requirements of flight at different speeds, and a high lift-drag ratio is kept; in a low-speed flight stage, the outer-section wings extend out to increase the area and aspect ratio of the wings, so that the gliding time and distance can be prolonged; the wings are contracted in the fuselage in a telescopic manner, so that the ablation problem is avoided; the wings extend out of the covering cap and are arranged on the upper surface of the fuselage, and heat-proof pressure at the covering cap can be effectively reduced.
本发明涉及一种宽速域变体滑翔飞行器,属于变构型无人机技术领域,解决了现有技术中难以承受高超声速飞行阶段产生的气动热、机构复杂、机构强度较弱、跨速域性能较弱和难以实现低亚声速飞行并且升阻特性难以达到较高水平的问题。本发明在高超声速阶段,采用乘波体构型充分利用激波产生的高压区从而最大化升力同时最小化阻力;在亚声速阶段,机翼伸出,根据动压调整机翼面积满足不同速度飞行的要求并保持较高的升阻比;进入低速飞行阶段,外段机翼伸出增大机翼面积和展弦比,有利于提高滑翔时间和距离;机翼通过伸缩方式收缩于机身内部,避免烧蚀问题;机翼伸出口盖布置于机身上表面,可以有效降低口盖处的防热压力。
Wide-speed-range variant gliding aircraft
一种宽速域变体滑翔飞行器
2024-05-10
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
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