民用飞机机轮最大刹车能量研究

机轮刹车装置是飞机起落架的重要组成部分，在地面减速过程中吸收飞机大部分动能，对飞机起降安全至关重要。其中，最大刹车能量设计是刹车装置的关键参数之一，与机轮刹车装置的安全性和经济性紧密相关。对民用飞机机轮刹车装置最大刹车能量的计算进行研究，按照适航规章相关要求，结合适航当局对刹车装置最大刹车能量计算的关注要点和飞机的设计构型，以某民用飞机为例，分析了机轮最大刹车能量计算中的影响因素，并通过计算对比该飞机在预定的不同使用场景与可能遇到的单个及多个故障叠加工况着陆时的刹车能量，确定该型飞机最大刹车能量出现在典型高原机场两个机轮刹车装置失效着陆工况，最大刹车能量为32.44 MJ,为飞机机轮刹车装置的设计提供关键参数。

Study on maximum braking energy of civil aircraft wheel

Wheel brake device is an important part of aircraft landing gear. It absorbs most of the kinetic energy of the aircraft during ground deceleration, which is critical to the safety of aircraft takeoff and landing. Among them, the design of maximum braking energy is one of the key parameters of the brake device, which is closely related to the safety and economy of the wheel brake device. This paper studies the calculation of the maximum braking energy of the wheel brake device of a civil aircraft. According to the relevant requirements of the airworthiness regulations, combined with the focus of the airworthiness authority on the calculation of the maximum braking energy of the brake device and the design configuration of the aircraft, taking a civil aircraft as an example, this paper analyzes the influencing factors in the calculation of the maximum braking energy of the wheel, and by calculating and comparing the braking energy of the aircraft when landing in different predetermined use scenarios and possible single and multiple fault superposition conditions, it is determined that the maximum braking energy of the aircraft occurs in the failure landing condition of two wheel brake devices in typical plateau airport. The maximum braking energy is 32. 44 MJ, which provides key parameters for the design of the aircraft wheel brake device.