Aircraft accident search simulation method and system

Abstract

The invention discloses an aircraft accident search simulation method, and relates to the technical field of aircraft accident search. The method plays an important role in determining an accident search area and planning a search path. The specific scheme is that the method comprises the following steps: S1, selecting a base point: taking an aircraft as a rigid body and taking the aircraft as thebase point; S2, defining degrees of freedom of a base point, wherein the degrees of freedom comprise three moving degrees of freedom and three rotating degrees of freedom; S3, determining resultant force and resultant moment conditions of the aircraft in the atmosphere, and determining a flight state; wherein the confirmation of the flight state in S3 comprises the following steps: M1, establishing a coordinate system; M2, determining motion parameters of aircraft flight; M3, coordinate system conversion: substituting the motion parameters into a coordinate system to calculate an attitude; and M4, measuring and calculating the control quantity and the state quantity. Through an aircraft aerodynamic principle, special conditions influencing aircraft accidents are classified and screened, and special condition types mainly influencing aircraft flight and causing the accidents are determined.

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

Images