面向系统集成的起落架地面运动特性建模方法

Aircraft ground maneuvering modeling for system integration

大型飞机地面运动特性是飞机性能的重要组成部分,主要涉及到飞机的地面滑跑、转弯以及刹车等过程。地面运动特性的分析涉及到动力学、液压、控制等多领域,是典型的多学科耦合的复杂问题。以某大型民用飞机为研究对象,从主制造商的系统集成性能分析需求出发,通过多学科解耦和模型物理度划分两个角度进行地面特性模型架构的分解与定义,并以飞机刹车系统性能分析为例,验证了本架构的有效性。本文提出的模型架构灵活,既适用于飞机集成商的飞机级性能分析,又适用于特定系统级的性能分析。

Ground maneuvering behavior for large commercial aircraft is an important part of the aircraft performance,which involves taxiing,steering,braking and etc.The ground maneuvering is a multi-discipline issue which should consider the coupling influence from landing gear,brake,hydraulic and propulsion system.Taking some large aircraft as the study object and the performance analysis of aircraft brake system as an example,this paper verifies the effectiveness of this architecture which is composed by subsystem models coming from the different majors of mechanism dynamic,hydraulic,aerodynamic and controlling specifically from the system integration performance requirements of the main manufacture.Each subsystem model can be divided into functional and physical model for different functions in different analysis scenarios.The proposed architecture is very flexible for aircraft integrator which can be used to analyze the aircraft level ground performance,and can also be used to analyze the specific system level performance.