Dynamic Analysis and Landing Gear Drop Test Simulation for a Light Airplane

In order to investigate the behavior of a light airplane and landing gear at the time of different maneuvers, a dynamic analysis and different loading effects on it will be of high importance. On the other hand, in order to extend the landing gear scheme and its optimum planning, the calculation of impact forces (after the wheels touch the ground) on the landing gear as well as the determination of the shock absorber stroke will be completely essential. The two common methods to calculate the impact forces and the shock absorber stroke is to use the kinematic energy and the vibration analysis with sprung mass, unsprung mass, spring and damper considerations. Assuming nonlinearity of the tire and the shock absorber are the main advantage of this research.At the end, the final model of landing gear has been simulated in the MCS ADAMS software in order to verify the impact forces and the shock absorber stroke. The good accuracy of the simulation data and simplicity in the landing gear modeling are the other important features of this approach.

Keywords:

Tire deflection , Shock absorber stroke , Landing gear