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Method for evaluating residual life of aircraft

An aircraft and life technology, applied in design optimization/simulation, geometric CAD, etc., can solve the problems of lack of life consumption assessment methods, unable to quantitatively give accurate life consumption conditions, etc., to achieve the effect of correct theoretical basis and clear analysis steps

Active Publication Date: 2021-06-29
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of lack of life consumption evaluation means and the inability to quantitatively give accurate life consumption conditions in the use of outfield aircraft, the purpose of the present invention is to provide a method for evaluating the remaining life of an aircraft

Method used

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  • Method for evaluating residual life of aircraft
  • Method for evaluating residual life of aircraft
  • Method for evaluating residual life of aircraft

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Embodiment Construction

[0020] Referring to the accompanying drawings, the inventive method has been applied to the evaluation of the remaining life of a certain type of aircraft, a method for evaluating the remaining life of an aircraft, the target life of this type of aircraft is known, including the target number of landings N 1 =5000, the load spectrum of the center of gravity load spectrum of the whole machine fatigue test of this type of aircraft is known, see Table 1, the load cycle of the reference spectrum at all levels, and the load history of all take-offs and landings of a certain aircraft of this type of aircraft is known, see Table 2 for this aircraft The load history information of all landings that have been flown is characterized by including the following contents:

[0021] 1) The center-of-gravity load spectrum of the whole aircraft fatigue test of this type of aircraft is used as the reference spectrum, and the fatigue load cycle corresponding to the whole life fatigue load cycle o...

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Abstract

The invention discloses a method for evaluating the residual life of an aircraft, which comprises: on the basis of a full-aircraft fatigue test load spectrum, determining a reference equivalent damage rate (equivalent damage per flight hour) for single-aircraft damage calculation by adopting a damage analogy calculation method; and then, on the basis of the load flight parameter process of any aircraft, determining equivalent damage of any aircraft, and rapidly evaluating and giving the consumption life and the residual life of the single aircraft. The method needs few parameters, is convenient to use, can be used for quickly determining the remaining life of the airplane, and can be further used for monitoring the service life of the single airplane and the structural health.

Description

technical field [0001] The invention belongs to the field of aviation structure fatigue, and in particular relates to an evaluation method for aircraft remaining life. Background technique [0002] Generally, the aircraft life is basically managed according to the "fleet life management", that is, all aircraft are controlled and used according to a predetermined life index. Generally, only three parameters of flight landing, flight hours, and calendar years are used to control the timing and remaining life of the aircraft to enter the overhaul. With the improvement of aircraft performance and cost, the original extensive life management method can no longer meet the refined use requirements of modern aircraft. It is urgent to develop a quantitative engineering that can accurately evaluate real-time damage and remaining life of field aircraft. practical method. [0003] This method determines a rapid assessment method for fatigue life of aircraft structure through the load ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/15
Inventor 张彦军雷晓欣宁宇史志俊
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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