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将放宽静稳定性与飞机的经济性指标直接关联,研究主要设计参数对飞机气动性能和直接使用成本的影响。首先分析了静稳定性设计对民机气动性能、结构质量及燃油消耗的影响;然后与民机使用经济性相结合,得出重心后移量与直接使用成本的函数关系和曲线。结果显示,采用放宽静稳定性技术有助于提高民用飞机的使用经济性。该研究方法可以为我国大型客机采用主动技术提供技术依据。
The relaxation of static stability is directly related to the economic indicators of the aircraft and the impact of the main design parameters on the aerodynamic performance and direct cost of the aircraft is studied. Firstly, the effect of static stability design on the aerodynamic performance, structural quality and fuel consumption of civil aircraft is analyzed. Then, combining with the economical use of civil aircraft, the relationship between the center of gravity backward and the cost of direct use is obtained. The results show that the relaxation of static stability technology can help improve the economy of civil aircraft. This research method can provide the technical basis for the active technology of large passenger aircraft in our country.