Helicopter Landing Gear Configuration Analysis And Simulation

This paper's research object is armed helicopter landing gear.Based on wide range of information studied,we did theoretical analysis about the characteristics of different configurations of landing gear.Then,we set up a digital model and a physical model.On this basis, a dynamic simulation was done.the simulation results has been final in-depth studied and comparised with each other.The main contents are included as followings:A dynamic analysis model of the armed helicopter landing gear is established based on ADAMS/Aircraft. Discussed the configuration and structure of helicopter landing gear.Thereby defined the crashworthiness design requirements of the new types of helicopter's retractable landing gears. And two solutions were proposed to the specific type.The typical rocker helicopter landing gear were used as the benchmark.We set up dynamics models of the fuselage and landing gear systems. Established their kinematics and dynamics equations. Laid the foundation of further analysis.A full craft assembly model on ADAMS/Aircraft is defined, which includes an airframe subsystem, a strut subsystem of the main landing gear and a wheel subsystem of the main landing geara,a strut subsystem of the tail landing gear, a wheel subsystem of the tail landing gear. And the droping simulation analysis was run. The research results show that the landing gear and full craft simulation analysis on ADAMS/Aircraft is highly reliable.And proved both precept are able to meet the requirements of the programme.The full craft model lay the foundation for the further simulation analysis of landing,and is conducive to the further improvement of the design.