提升通用飞机气动效率的设计策略研究

针对目前通用飞机借鉴大中型运输类飞机常规设计方法造成的气动效率较低、经济性较差的现状,分析通用飞机相对于其他飞机所具有的不同的设计特点;从空气动力学基本原理出发,结合通用飞机的特点,推导并分析其气动效率低下主要是由两个方面的矛盾耦合所造成的;提出可以有效改善通用飞机气动效率的设计策略;通过通用飞机总体参数设计优化实例印证新设计策略的有效性。结果表明:新设计策略可有效改善通用飞机的气动性能,提高其经济性,但相关研究具有较大的挑战性。

Research on Design Strategy for Improving Aerodynamic Efficiency of General Airplane

Nowadays most general airplanes are still designed using similar methods with middle or large transport aircraft, which means that they use few optimization method, leading to low aerodynamic efficiency and high economic cost. To change this situation, some design features of general airplanes are analyzed and summarized from basic aerodynamic principles, which include two contradictions. Then an effective strategy was put forward for improving aerodynamic efficiency, different with traditional general airplane design methods and middle or large transport aircraft design methods. This strategy presents some new requirements on design methods of new general airplanes. A conceptual optimization design example was used to prove the effectiveness of this new strategy.