The Influence On Disposal Type Of Landing Gear With Multi-struts For Landing

Landing gear with multi-wheels and multi-struts was put forward shortly after the occurrence of tricycle landing gear. The large aircraft is being researched in our country and the research on this field in our country is at the initial stage. So it is worthwhile to conduct the research on the landing gear with multi-wheels and multi-struts. According to the basic theories of the mechanics, the dynamics analysis model of the full-aircraft that of three different disposal types for landing gear during its landing process is established in this paper. Then the massive dynamics software-ADAMS is used to conduct the symmetric landing analysis and the dissymmetric landing analysis. At last, the researchers discussed and analyzed the results of the simulation contrastively.According to the conditions of the large transportation aircraft being researched, the mathematic model of the landing gear for the aircraft and the dynamics analysis model of the full-aircraft are established in this paper. The equations used to calculate the forces of its stroke absorbers as well as its tires are presented in the paper. The full-aircraft assembly models of three different disposal types for landing gear in software ADAMS are defined, which includes an airframe subsystem, a strut subsystem of the nose landing gear, a wheel subsystem of the nose landing gear, a strut subsystem of the forward main landing gear, a wheel subsystem of the forward main landing gear, a strut subsystem of the after main landing gear and a wheel subsystem of the after main landing gear. Then the symmetric landing and the dissymmetric landing of the full-aircraft models are being conducted in this research, and the results of the dynamic simulation were analyzed. So the results are well reference to the design and the analysis of the different landing gear disposal types for the large aircraft.