Abstract:

The imitation of spin up and spring back drag loads is the important factor affecting the result of landing gear drop tests. The authors of this paper conducted the landing gear rotating drop test for different imitation runways on the column style drop test bed, and obtamed some typical drop test results under imitation condition of spin up and spring back. After analyzing and discussing these results of drop test, a reasonable imitation style of spin up and spring back on the column style drop test bed is proposed. The results of research show that in the landing gear drop test on the column drop test bed, one can minimize the influence of fixed point friction between tire and imitation runway on the test result by using the reasonable imitation style of spin up and spring back.

Key words: co lumn sty le dro p test -bed, dr op test, spin-up and spr ing back dr ag lo ad