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首页> 外文期刊>Journal of Spacecraft and Rockets >Impact of Thrust Alignment on Orbital Debris Removal by Ground-Based Lasers
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Impact of Thrust Alignment on Orbital Debris Removal by Ground-Based Lasers

机译：推力对准对地基激光清除轨道碎片的影响

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The rising population of orbital debris has generated many studies of mitigation concepts, one of which is the use of repetitively pulsed ground-based lasers, which was studied during the ORION project in the early 1990s. The objective was to verify the minimum velocity change required to cause a reentry within one orbit, using conservative assumptions. Both analytical and numerical solutions to the equations of motion were applied. The report covers the impact if the orbital debris does not make a direct pass over the laser. Also reported are investigations of the impact of object size and density, and the impact of atmospheric density on the velocity change required to deorbit. The conclusion is that, with some minor exceptions, the ORION required velocity change results appear to be reasonable for concept studies for direct overhead passes. Debris at nonoverhead offset angles of 30° increases total velocity change by about 15%, but increases the velocity change per laser pulse by over 30% above requirements for an overhead pass. Allowing laser pulses to continue until the object is overhead or at closest approach increases total energy requirements but lowers the energy per pulse, an important design consideration.
机译：不断增加的轨道碎片产生了许多缓解概念的研究，其中之一是在1990年代早期的ORION项目中对重复脉冲地基激光器的使用。目的是使用保守的假设来验证引起一个轨道内重新进入所需的最小速度变化。应用了运动方程的解析解和数值解。该报告涵盖了轨道碎片没有直接通过激光的影响。还报道了对物体尺寸和密度的影响以及大气密度对去轨所需的速度变化的影响的研究。结论是，除了一些次要例外，ORION要求的速度变化结果对于直接架空直通的概念研究似乎是合理的。非顶偏角为30°的碎屑会使总速度变化增加大约15％，但会使每个激光脉冲的速度变化增加30％以上，高于架空通道的要求。允许激光脉冲持续到物体悬空或接近目标时，会增加总能量需求，但会降低每个脉冲的能量，这是重要的设计考虑因素。

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