Method for analyzing and forecasting reentry meteorite of spacecraft

Abstract

The invention discloses a method for analyzing and forecasting reentry meteorite of a spacecraft. The method comprises the following steps: (1) analyzing the structure of the spacecraft and constructing a disintegrated three-level model; (2) calculating and analyzing aerodynamic force, aerodynamic heat and flight characteristics of the system / subsystem level and the component level; (3) determining system / subsystem level disintegration criterion parameters and condition boundary parameters; (4) calculating and simulating the hierarchical flight path of the system / subsystem; (5) calculating, simulating and analyzing system / subsystem hierarchical structure disintegration and destruction; (6) determining a component level disintegration criterion parameter and a condition boundary parameter;(7) calculating and simulating a component level flight path; (8) calculating, simulating and analyzing the disintegration and damage of the hierarchical structure of the component; (9) constructing afragment / particle-level block strip model; (10) analyzing spacecraft fragment survivability and simulation calculation condition boundary; (11) carryin gout fragment / particle level aerodynamic forceand flight path calculation simulation; (12) fragment / particle hierarchical falling area analysis and evaluation; and (13) ground risk assessment.

Description

technical field [0001] The invention relates to an analysis and prediction method for spacecraft re-entry and fall, aiming at the description of the physical research objects of various components or fragments that may appear in the process of spacecraft re-entry and fall disintegration in terms of geometry and physics, to carry out various researches during the flight process Aerodynamic / aerothermal / disintegration analysis of objects, wreckage survivability and ground risk assessment. Background technique [0002] With the gradual increase of human spaceflight activities outside the atmosphere, the problem of spacecraft re-entry and fall has gradually attracted attention and attention. The process of spacecraft falling and disintegrating specifically refers to various failed satellites, in-orbit non-recoverable artificial celestial bodies (such as orbital modules of manned spacecraft, space stations, etc.), rocket boosters or vehicle wreckage, etc. The process of controlle...

AI Technical Summary

Problems solved by technology

In the past 20 to 30 years, some research work has been carried out on the re-entry and fall of spacecraft and space debris at home and abroad. However, due to the complexity of the problems brought about by multidisciplinary interdisciplinary research, the level of related research and application is still very limited, and some basic problems have not yet been well understood. easy to solve

[0004] Various phenomena in the process of spacecraft falling are very random. From the perspective of solving engineering problems, complex spacecraft fine modeling under finite conditions may not necessarily reflect the uncertainty of the system

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