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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1993, Vol. 14 ›› Issue (10): 503-505.

• 论文 • Previous Articles     Next Articles

THE TECHNOLOGY RESEARCH AND PRACTICE OF THE FATIGUE TEST FOR THE TWISTING FORCE ARM OF THE LANDING GEAR

Long Feng-ming, Zhang Hong-yuan   

  1. Box 9203 of Beijing, Beijing, 100076
  • Received:1992-06-25 Revised:1992-11-17 Online:1993-10-25 Published:1993-10-25

Abstract: This paper describes a method of fatique test of the twisting force arm of landing gear and discusses the necessity of variable stroke test of landing gear. It takes into account the effects of variable stroke test of landing gear on the crack growth. This paper provides the information for determining the service life and the overhaul periods with high reliability of structure of landing gear. The result of the test indicates that the fatique crack situation and its propagation rate are in accordance with the field-failure data.

Key words: landing gear, variable stroke, twisting force arm, fatigue test