Method for calculating laser ablation impulse and impulse moment of centimeter-level space debris

Abstract

The invention belongs to the technical field of spaceflight, and particularly relates to a method for calculating a laser ablation impulse and an impulse moment of a centimeter-level space debris Themethod comprises the following steps: firstly, calculating a space debris laser ablation force and a laser ablation moment in a static coordinate system, then calculating a space debris unit mass laser ablation impulse and a single-pulse laser ablation impulse moment in a body fixed connection coordinate system, and finally calculating the space debris unit mass laser ablation impulse in a radialtransverse coordinate system. According to the invention, the Euler angle of the body-fixed connection coordinate system relative to the zero-moment radial transverse coordinate system is adopted to represent the attitude motion, and the influence of the fragment attitude motion on the fragment orbit motion can be reflected. According to the method, the laser ablation force and the laser ablationmoment are calculated in the static coordinate system, the spatial orientation of the debris is further considered, and then the laser ablation force and the laser ablation moment are calculated in the body fixed connection coordinate system, so that the change of the laser ablation force and the laser ablation moment along with the movement of the laser irradiation direction vector and the debrisattitude is accurately reflected.

Description

technical field [0001] The invention belongs to the field of aerospace technology, and in particular relates to a calculation method for laser ablation impulse and impulse moment of centimeter-level space debris. Background technique [0002] Space debris refers to various wastes generated in space during human spaceflight activities. With the continuous increase of human spaceflight activities, the number of space debris is also increasing rapidly, posing serious impact threats to space stations, spacecraft and satellites. [0003] Centimeter-level space debris is the most harmful to spacecraft impacts. For space debris below the centimeter level, structural protection methods can be used to reduce the impact hazard; for larger debris, the number of which is small and the probability of impact is very low, active avoidance methods can be used to prevent impact; centimeter-size space debris has a large impact kinetic energy and cannot Structural protection methods are adopt...

AI Technical Summary

Problems solved by technology

[0007] (2) The existing method is to analyze and calculate the laser ablation force and laser ablation moment given the laser irradiation direction vector in the static coordinate system of the debris, which cannot dynamically consider the impact of the debris attitude movement on the debris orbital motion, only Suitable for spherical shape fragments

In fact, if some fragments have initial posture motion (such as cylinder and cuboid), this posture motion will affect the laser ablation force and then affect the orbital motion of the fragments; some fragments will produce laser ablation torque ( Such as hemisphere and cone) cause debris to rotate, affect laser ablation force and then affect debris orbital motion

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