Multi-Point Optimization Study of Hydrogen-Fueled, Low-Boom Supersonic Transport
Multi-Point Optimization Study of Hydrogen-Fueled, Low-Boom Supersonic Transport
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DOI：
10.2322/tastj.10.33
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Tatsunori Yuhara;K. Rinoie
中科院分区：
文献类型：
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作者：
Tatsunori Yuhara;K. Rinoie
许多项目都在努力实现商业超音速运输机（SST）。这些试验揭示了成功完成与超音速巡航效率、音爆烦恼、经济可行性以及开发避免环境问题的解决方案有关的各种必要项目目标的许多障碍。飞机燃料从煤油到液氢的转变将在不久的将来到来。本研究的目的是讨论氢燃料低音爆超音速运输机的可行性，该超音速运输机设计为在马赫数1.6的巡航速度下运载50名乘客，航程3,500海里，采用的方法考虑了氢的影响，并结合了音爆最小化理论。采用遗传算法进行多点优化。目标函数为最大航程、最小起飞重量和最小等效面积差ΔAE。设计变量是机身长细比、巡航升力系数和机翼面积，这些是飞机性能的基础。结果表明，它们之间存在着权衡关系。通过分析具有较低ΔAE的较高等级群体，揭示了减小ΔAE的机翼面积、巡航CL和高度的有希望的范围。
Many projects have made efforts to realize commercial supersonic transports (SSTs). These trials have revealed many barriers to the successful completion of various necessary project goals related to supersonic cruise efficiency, sonic boom annoyance, economic viability and also the development of solutions for avoiding environmental problems. The shift of aircraft fuel from kerosene to liquid hydrogen will come in the near future. The purpose of this study is to discuss the feasibility of a hydrogen-fueled, low-boom SST designed to carry 50 passengers for a range of 3,500 nm at a Mach 1.6 cruise speed using a method which considers the effects of hydrogen and incorporates the sonic boom minimization theory. A multi-point optimization using a genetic algorithm is conducted. The objective functions are to maximize range, minimize takeoff weight, WTO, and to minimize the difference of equivalent areas, ΔAE, which is a metric about sonic booms. The design variables were the fuselage fineness ratio, cruise lift coefficient and wing area, which are fundamental for aircraft performance. The results show that there are trade-off relationships among them. By analyzing the higher-ranked populations that have lower ΔAE, the promising range of a wing area, a cruise CL, and an altitude for the reduction of ΔAE are revealed.