SIMULATION OF LARGE CIVIL AIRCRAFT LANDING RESPONSE UNDER CONSIDERATIONS OF FLEXIBLE AIRFRAME  

作　　者：刘向尧 聂宏 魏小辉 张明 

机构地区：[1]State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2013年第1期1-7,共7页南京航空航天大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(51075203)

摘　　要：To evaluate the landing response of the large civil aircraft in the conceptual design phase , a method for simulating aircraft landing is given.The model for the shock absorber is investigated.The flexible airframe model is established using finite element model ( FEM ) to analyze its modes.Then , the whole aircraft model with flexible airframe is made for the multibody simulation.Tail-down , two-point , three-point and sideslip landing scenarios are studied.The influence on the landing performance considering mode superposition of the flexible airframe is analyzed.Both longitudinal and spanwise positions of the main landing gear are changed to research the influence on the landing performance.Results show that the method is feasible.The shock absorber axial force of the main landing gear with the flexible airframe is smaller than that of rigid airframe.The number of mode superposition and the position of main landing gear can influence the landing response.To evaluate the landing response of the large civil aircraft in the conceptual design phase, a method for simulating aircraft landing is given. The model for the shock absorber is investigated. The flexible airframe model is established using finite element model （FEM） to analyze its modes. Then, the whole aircraft model with flexible airframe is made for the multibody simulation. Tail-down, two-point,three-point and sideslip landing scenarios are studied. The influence on the landing performance considering mode superposition of the flexible airframe is ana- lyzed. Both longitudinal and spanwise positions of the main landing gear are changed to research the influence on the landing performance. Results show that the method is feasible. The shock absorber axial force of the main landing gear with the flexible airframe is smaller than that of rigid airframe. The number of mode superposition and the position of main landing gear can influence the landing response.

关 键 词：landing gear shock absorber landing response flexible airframe 

分 类 号：V226.2[航空宇航科学与技术—飞行器设计]