DEVELOPMENT OF FATIGUE TEST TECHNOLOGY OF AIRCRAFT LANDING GEARS

The four phases of the development of fatigue test technologies of landing gears were introduced. The fixed piston travel fatigue test is easy to practice, but the test life is longer than normal level. One-dimensional piston travel changing fatigue test technology is used in piston vertical mounted landing gears' fatigue test. Two-dimensional piston travel changing technology can solve the problem of piston inclined mounted. Real-time three-dimensional piston travel changing fatigue test technology can simulate the use of a landing gear better and the test data is more authentic than the others, and it reflects the design ideas of regarding the landing gear and other relative structures as a whole one.