Modeling and flight validation of aircraft symmetry landing multi-body dynamics

A symmetry landing dynamics model with 3 bodies and 9 dimensions for aircraft was established based on Newton-Euler mulit-body dynamics modeling method.The model was verified by flight test taking a certain type of aircraft as an example,the landing gears of which are dual-chamber shock absorbers.The simulation and the measured results are both given with varieties of landing weight,sink speed and pitch angle.It is shown that the model is effective for aircraft symmetry landing by comparing the two results.