A novel lightweight aerodynamic design for the wings of hypersonic vehicles cruising in the upper atmosphere
A novel lightweight aerodynamic design for the wings of hypersonic vehicles cruising in the upper atmosphere
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一种新颖的轻量级空气动力学设计，用于高超音速飞行器在高层大气中巡航的机翼
DOI：
10.1016/j.ast.2020.106418
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发表时间：
2020-12
影响因子：
5.6
通讯作者：
Wang Bing
中科院分区：
文献类型：
--
作者：
Chen Zhi;Huang Fei;Jin Xuhong;Cheng Xiaoli;Wang Bing
基于高空稀薄空气动力学中的分子平均自由程概念，提出了一种新的概念性轻量化设计方法，并应用于120 ~ 300 km高空飞行的高超声速飞行器机翼的气动设计。本文提出的轻量化方案在高层大气中巡航的高超声速飞行器中是有希望的，因为它不仅能够将机翼的重量减少约14%，而且还可以节省相同数量的材料。综合气动分析表明，轻型气动设计可适用于较宽的巡航高度和马赫数范围。与常规平板机翼相比，轻量化机翼具有较小的阻力和较大的有效升阻比，证明了高空高超声速飞行器轻量化设计的可行性。此外，随着巡航高度的增加，轻型机翼具有更好的升力和升阻比性能，进一步证明了轻型机翼对在高层大气中巡航的高超声速飞行器的良好前景。这种轻量化的设计概念具有很大的价值，因为高层大气区域相对来说是未被探索的，在这一区域巡航的高超音速飞行器可以用于高分辨率的地球监视、精确的重力/磁场测绘和全球海洋气候探测。
Base on the concept of molecular mean free paths in high-altitude rarefied aerodynamics, a novel conceptual lightweight design is proposed and applied to the aerodynamic design of wings of hypersonic vehicles cruising in the upper atmosphere between 120 km to 300 km. The lightweight scheme proposed here is promising in hypersonic vehicles cruising in the upper atmosphere in the sense that it is able to not only reduce the weight of a wing by about 14%, but also save the material by the same amount. A comprehensive aerodynamic analysis indicates that the lightweight aerodynamic design can apply to a wide range of cruising altitudes and Mach numbers. In comparison with the conventional flat-plate wing, the lightweight wing always has smaller drags and larger effective lift-to-drag ratios, proving the feasibility of lightweight design for hypersonic vehicles at high altitudes. Moreover, as the cruising altitude is increased, the lightweight wing has even better lift and lift-to-drag-ratio performances, further demonstrating the excellent promise of lightweight wings for hypersonic vehicles cruising in the upper atmosphere. This lightweight design concept is of great value because the region of the upper atmosphere is relatively unexplored, and hypersonic vehicles cruising in this region can be used for high-resolution earth surveillance, accurate gravity/magnetic field mapping, and global ocean climate exploring.
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影响因子：
5.6
作者：
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影响因子：
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