An aircraft crash search simulation method and system

Abstract

The invention discloses an aircraft crash search simulation method, relates to the technical field of aviation crash search, and plays an important role in the determination of the crash search area and the planning of the search path. Rigid body, with the aircraft as the base point; S2: define the degrees of freedom of the base point, including three degrees of freedom of movement and three degrees of freedom of rotation; S3: determine the resultant force and moment of the aircraft in the atmosphere, and determine the flight state; in the S3 The confirmation of the flight state includes the following steps: M1: Establish the coordinate system; M2: Determine the motion parameters of the aircraft flight; M3: Coordinate system conversion: Substitute the motion parameters into the coordinate system to calculate the attitude; M4: Measure the control quantity and state quantity. According to the principle of aircraft aerodynamics, classify and screen the special conditions that affect aircraft crashes, and determine the types of special conditions that mainly affect aircraft flight and cause crashes.

Description

technical field [0001] The invention relates to the technical field of aviation accident search, more specifically, it relates to an aircraft accident search simulation method and system. Background technique [0002] The search for the crashed aircraft is the crucial first step in the search and rescue of civil aircraft. Establishing a reasonable crash search model, quickly determining the crash search area, planning the search path, and visualizing the crash search data are of great significance to civil aircraft search and rescue. [0003] At present, the following problems exist in the determination of the crash search area, the determination of the search path, and the visualization of the crash search data: the determination of the crash search area is based on the continuous space determined on the basis of the analysis of objective conditions such as aircraft status and weather conditions, and the determined The continuous space range is large, which is not conduciv...

AI Technical Summary

Problems solved by technology

[0003] At present, the following problems exist in the determination of the crash search area, the determination of the search path, and the visualization of the crash search data: the determination of the crash search area is based on the continuous space determined on the basis of the analysis of objective conditions such as aircraft status and weather conditions, and the determined The continuous space range is large, which is not conducive to quickly searching for the crashed aircraft, and the calculated probability distribution of the crashed search area is based on the ordinary normal distribution of points and lines, without considering the influence of the special circumstances of the aircraft crash on the probability distribution; When an aircraft encounters a special situation, the subjective judgment of the pilot will change the flight trajectory and path of the aircraft, making the actual location of the crash uncertain. The existing search path planning considers less influence of pilot human factors, and the search efficiency is low; Most of the existing crash search systems are crash search decision-making systems. There are few studies on the special circumstances of aircraft crashes. The visual expression of the data generated by the crash search is relatively simple, which is not conducive to the understanding and grasp of the crash search data. less positive impact

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