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An FTA-based fault test and analysis method for aircraft in harsh climate environment

A bad weather and analysis method technology, applied in the direction of aircraft component testing, machine/structural component testing, prediction, etc., can solve the problems of unfavorable aircraft climate test design, etc., to prevent accidents in severe weather environment of aircraft, strong applicability, Real and believable effect of mapping relationship

Active Publication Date: 2022-07-15
CHINA AIRPLANT STRENGTH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is: the existing technology lacks the method for analyzing the failure caused by the harsh climate environment of the aircraft, which is not conducive to the design of the aircraft climate test in the climate environment laboratory of the whole machine, and then provides a kind of aircraft based on FTA Weather environment failure test analysis method, analyzing the risk importance from the degree of aircraft damage caused by severe weather environment

Method used

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  • An FTA-based fault test and analysis method for aircraft in harsh climate environment
  • An FTA-based fault test and analysis method for aircraft in harsh climate environment
  • An FTA-based fault test and analysis method for aircraft in harsh climate environment

Examples

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Effect test

Embodiment 1

[0060] This embodiment is an FTA-based method for testing and analyzing aircraft harsh weather environment faults, such as figure 1 shown, including the following steps:

[0061] S1. Determine the flight accident caused by the bad weather environment as a fault tree top event;

[0062] S2. Statistical analysis of accidents and accident symptoms related to climate factors, statistics of accidents and accident data related to climate factors at home and abroad, and stored in the database. The source of accident data is domestic and foreign flight accident databases. The domestic and foreign flight accident databases include: United States National Transportation Safety Board (NTSB), Aviation Accident and Incident Data System (AAIDS), FAA Accident Data System (AIDS);

[0063] S3. Analyze the set of severe weather factors that induce aircraft accidents and build a fault tree, which specifically includes the following steps:

[0064] S3-1. Perform Boolean algebra operation to fin...

Embodiment 2

[0078] This embodiment is an FTA-based method for testing and analyzing aircraft harsh weather environment faults, such as figure 1 shown, including the following steps:

[0079] S1. Determine the flight accident caused by the bad weather environment as a fault tree top event;

[0080] S2. Statistical analysis of accidents and accident symptoms related to climate factors, statistics of accidents and accident data related to climate factors at home and abroad, and stored in the database. The source of accident data is domestic and foreign flight accident databases. The domestic and foreign flight accident databases include: United States National Transportation Safety Board (NTSB), Aviation Accident and Incident Data System (AAIDS), FAA Accident Data System (AIDS);

[0081] S3. Analyze the set of severe weather factors that induce aircraft accidents and build a fault tree, which specifically includes the following steps:

[0082] S3-1. Perform Boolean algebra operation to fin...

Embodiment 3

[0124] The present embodiment is a FTA-based method for testing and analyzing aircraft harsh weather environment faults, comprising the following steps:

[0125] S1. Determine the flight accident caused by the bad weather environment as a fault tree top event;

[0126] S2. Statistical analysis of accidents and accident symptoms related to climate factors, statistics of accidents and accident data related to climate factors at home and abroad, and stored in the database. The source of accident data is domestic and foreign flight accident databases. The domestic and foreign flight accident databases include: United States National Transportation Safety Board (NTSB), Aviation Accident and Incident Data System (AAIDS), FAA Accident Data System (AIDS);

[0127] S3. Analyze the set of severe weather factors that induce aircraft accidents and build a fault tree, which specifically includes the following steps:

[0128] S3-1. Perform Boolean algebra operation to find the minimum cut ...

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Abstract

The invention provides an FTA-based method for testing and analyzing aircraft severe weather environment faults, belonging to the technical field of aircraft testing. Including the following steps: S1, determine the flight accident caused by the bad weather environment as a fault tree top event; S2, carry out statistical analysis on the accident and the accident symptoms related to the weather factor; S3, analyze the set of bad weather factors that cause the aircraft accident and construct the fault tree; S4, construct a failure risk model of the aircraft in severe weather environment; S5, predict the importance of the risk of adverse weather factors affecting flight safety. The invention solves the problem that the prior art lacks the failure analysis method for the aircraft's harsh climate environment, which is not conducive to the design of the aircraft climate test in the climate environment laboratory of the whole aircraft, and has the advantages of simple operation and strong applicability.

Description

technical field [0001] The invention relates to the technical field of aircraft testing, in particular to an FTA-based method for testing and analyzing aircraft harsh weather environment faults. Background technique [0002] Aircraft and their ground support equipment will inevitably encounter harsh climatic conditions such as high temperature, high cold, damp heat, rainfall, snowfall, fog, freezing rain, wind, and solar radiation during their service. The physical or chemical properties of the materials of its ground support equipment will adversely affect its performance, resulting in its performance degradation, limited functions, and even threatening combat enablement. For example, when an aircraft takes off under severe weather conditions such as snowfall, fog, and rainfall, the pilot makes an operation error due to poor visibility and causes the aircraft to crash. The military transport aircraft forms ice due to freezing rain, and needs to be thawed in a large area bef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/00G06Q10/04G06Q10/06G06Q50/30G06F16/2458G06F16/22G01M99/00B64F5/60
CPCG06Q10/04G06Q10/0635G06Q50/30G06F16/2462G06F16/2246G01M99/005B64F5/60
Inventor 张亚娟张惠邓文亮田培强张昭吴敬涛任战鹏
Owner CHINA AIRPLANT STRENGTH RES INST
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