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为考虑机群载荷谱分散性进行机群可靠性寿命评估,以56架Fokker F27飞机每次飞行的载荷因子-超越数曲线族为基础,编制得到56架飞机的载荷谱,选取SWT公式和线性累积损伤理论计算得到每架飞机的飞行载荷损伤、地-空-地载荷损伤和每次飞行载荷损伤,采用概率坐标回归方法进行拟合优度检验.结果表明,飞行载荷损伤服从威布尔分布、地-空-地载荷损伤服从对数正态分布,综合飞行载荷和地-空-地载荷损伤的每次飞行损伤服从对数正态分布,每次飞行损伤的对数标准差为0.073 7.
In order to evaluate the reliability of fleet reliability for fleet load spectrum dispersal, the load spectra of 56 aircraft were compiled on the basis of the load factor-overrun curves for each of 56 Fokker F27 aircraft. The SWT formula and linear cumulative damage The theoretical calculation shows that the flight load damage, ground-air-ground load damage and each flight load damage of each aircraft are tested by the probability coordinate regression method.The results show that the flight load damage obeys Weibull distribution and ground- Air-ground load obey logarithmically normal distribution, each flight damage of integrated flight load and ground-air-ground load damage obey the logarithm normal distribution, the logarithmic standard deviation of each flight damage is 0.073 7.