已飞飞机原寿命的疲劳分散系数

张福泽

doi:10.7527/S1000-6893.2013.0199

航空学报 >

2013 , Vol. 34 >Issue 5: 1108 - 1113

DOI: https://doi.org/10.7527/S1000-6893.2013.0199

固体力学与飞行器总体设计

已飞飞机原寿命的疲劳分散系数

张福泽

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北京航空工程技术研究中心, 北京 100076

张福泽男, 中国工程院院士。主要研究方向: 飞机结构疲劳寿命、日历寿命和可靠性研究。 E-mail: yi_mail@sohu.com Tel: 010-66921097

收稿日期: 2012-06-03

修回日期: 2012-10-18

网络出版日期: 2012-12-24

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Fatigue Scatter Factor of Flown Aircraft’s Original Life

ZHANG Fuze

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Beijing Aeronautical Technology Research Center, Beijing 100076, China

Received date: 2012-06-03

Revised date: 2012-10-18

Online published: 2012-12-24

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摘要

为了准确利用已飞飞机的使用寿命,探讨了两种情况下已飞飞机原寿命的疲劳分散系数:①探讨已飞飞机的原寿命等于机群飞机给定使用寿命时的疲劳分散系数;②探讨已飞飞机作为机群飞机定寿试验机时的疲劳分散系数。通过研究,第1种情况的已飞飞机原寿命的疲劳分散系数可取1,第2种情况的已飞飞机原寿命的疲劳分散系数按规范规定的试验寿命的疲劳分散系数取值。这种取值方法可提高飞机定寿的可靠性。

关键词： 疲劳分散系数; 已飞飞机; 原寿命; 机群飞机; 飞机定寿

本文引用格式

张福泽 . 已飞飞机原寿命的疲劳分散系数[J]. 航空学报, 2013 , 34(5) : 1108 -1113 . DOI: 10.7527/S1000-6893.2013.0199

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

参考文献

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