Spacecraft aerodynamic fusion orbit perturbation analysis method

Abstract

The invention discloses a spacecraft aerodynamic fusion orbit perturbation analysis method, which relates to the field of aerospace forecasting, comprehensively considers the influence of refined cross-basin aerodynamic modeling and attitude rotation effect, and forecasts the decay orbit information of a spacecraft in advance. The method overcomes the defect of insufficient consideration of aerodynamic influence factors in a traditional technical method, can significantly improve the prediction precision of the on-orbit flight and reentry process of the large uncontrolled spacecraft, can perform pre-judgment in advance, and provides a basis for prediction of information such as the position at the reentry moment, and the problem solving and forecasting, hazard analysis and risk assessment of the return and reentry process of the large-scale uncontrolled spacecraft can be carried out; and meanwhile, a multidisciplinary coupling research and optimization design technology for the problems of uncontrolled reentry, maneuvering orbital transfer and the like of a large spacecraft can be supported.

Description

technical field [0001] The invention relates to the field of spaceflight prediction, in particular to a method for analyzing aerodynamic fusion orbital perturbation of a spacecraft. Background technique [0002] The process of returning and re-entering the earth's atmosphere by a large spacecraft at the end of its life can be divided into uncontrolled re-entry and controlled de-orbit re-entry. Among them, large spacecraft with uncontrolled re-entry are usually out of control due to communication failures, and eventually de-orbit naturally and re-enter the atmosphere. In history, there are many cases of large spacecraft re-entering the atmosphere after failure, such as the "Skylab" space station in the United States. After the life of a large spacecraft de-orbits and falls naturally, under the influence of perturbing factors such as atmospheric resistance in the low-earth orbit environment and the earth’s gravity, the orbital altitude will gradually decline to the final re-e...

AI Technical Summary

Problems solved by technology

Existing technical methods cannot fully consider the influence of low-Earth orbit cross-basin unbalanced flow aerodynamic characteristics and attitude changes on the orbital perturbation of large spacecraft, which will easily lead to insufficient accuracy of orbital prediction, and even misleading impact on decision-making of flight control.

Images