关键词: 疲劳分散系数, 已飞飞机, 原寿命, 机群飞机, 飞机定寿

Abstract:

This paper discussed the fatigue scatter factor of a flown aircraft's original life in two circumstances for the accurate use of a flown aircraft's original life. First, the original life of a flown aircraft equals to the given life of the fleet aircraft; second, the flown aircraft are used as testers to determine the fatigue scatter factor of the fleet. The study reveals that in the first circumstance, the fatigue scatter factor of the flown aircraft's original life may be set as 1; in the second circumstance, the fatigue scatter factor of the flown aircraft' original life is set based on that of their test life as specified. This way can improve the reliability in determining an aircraft's life.

Key words: fatigue scatter factor, flown aircraft, original life, fleet aircraft, determination of aircraft life