基于动力学边界的结冰飞机安全预警方法

doi:10.7527/S1000-6893.2018.22478

Abstract

Abstract: Icing aircraft shows significant nonlinear and coupling characteristics because the dynamic characteristics are seriously destroyed by the icing. Therefore, the traditional safety warning method cannot detect the potential risk effectively and correctly; and it also easily leads to flight accident. In order to solve this problem, a novel safety warning method based on the dynamic envelope is proposed. The method can take coupling dynamic characteristics into account and can be regarded as a theoretical basis of an online safety warning system. First, based on the differential manifold method, the exact dynamic envelope for an icing aircraft is determined and the influence on the dynamic envelope is analyzed in detail. Secondly, based on the relative distance of the dynamic envelope, flight risk is quantified and the safety warning method is determined via taking the characteristics of dynamic into account. Finally, a flight simulation training system is established. Taking landing as the training subject, the advantages of the method are obtained via comparing it with the traditional safety warning method based on the angle of attack. The results show that in comparison with the traditional method, the safety warning method based on the dynamic envelope can detect the potential risk ahead. And the safety maneuvering for icing aircraft can be trained by the flight training system to improve flight safety.

Key words: dynamic envelope, safety warning, icing aircraft, landing, flight simulation

CLC Number:

V328

ZHENG Wuji, LI Yinghui, ZHOU Chi, WU Pengwei, DONG Zehong. Flight safety warning method for icing aircraft based on dynamic envelope[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(4): 122478-122478.

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Flight safety warning method for icing aircraft based on dynamic envelope

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