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首页> 外文期刊>Space Energy and Transportation >THE FEASIBILITY OF USING A SINGLE MOVING SPOT OF CONCENTMTED SOLAN RADIATION TO CAUSE MECHANICAL FAILURE ON ALUMINUM STRUCTURAL BODIES IN LOW EARTH ORBIT
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THE FEASIBILITY OF USING A SINGLE MOVING SPOT OF CONCENTMTED SOLAN RADIATION TO CAUSE MECHANICAL FAILURE ON ALUMINUM STRUCTURAL BODIES IN LOW EARTH ORBIT

机译：使用集中式太阳辐射单动点引起低地球轨道铝结构体机械故障的可行性

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To address the growing problem of orbital debris, the ASPOD project proposes to use concentrated solar radiation to reduce the material strength of orbital structUres sufficiently to allow low force robotic arms to tear them apart. Since this application uses optics in low earth orbit, special considerations must be made: the size and weight of the optics must be minimized, the temperature of the heated structure cannot exceed its melting temperature (else the optics become corrupted), and the robotic structures that provide the force to break the material must be low powered and efficient. Numerical codes were created that model the thermal and structural environment of an aluminum plate under these stringent conditions. A focused spot of concentrated solar radiation of varying diameter was cycled across a plate of varying surface properties at varying speeds. Given these conditions, the minimum loading to cause failure by the robotic arms was 300 N with the focal spot moving at a speed of 25 cm/s. The emissivity of the plate and spot radius (for a constant net energy flux) did not significantly effect the minimum load requirements. Increased lens concentration factors brought about mildly decreased minimum load requirements. However, the concentration spot velocity significantly affected the minimum loading requirement. The most significant thermal property controlling the force necessary to cause failure is the average temperature of the plate along the cut line. The concept is feasible and recommendations are made for future designers of the ASPOD project.
机译：为了解决不断增长的轨道碎片问题，ASPOD项目建议使用集中的太阳辐射来降低轨道结构的材料强度，以使低力机械臂将其撕裂。由于此应用程序在近地轨道上使用光学元件，因此必须特别注意：光学元件的尺寸和重量必须最小化，加热结构的温度不能超过其熔化温度（否则光学元件会损坏），并且机器人结构提供破坏材料的力量的工具必须功率低且效率高。创建了在这些严格条件下对铝板的热和结构环境进行建模的数字代码。不同直径的聚光太阳辐射的聚焦点以不同的速度在不同表面性质的板上循环。在这些条件下，导致机械臂故障的最小负载为300 N，焦点以25 cm / s的速度移动。板的发射率和光斑半径（对于恒定的净能量通量）不会显着影响最小负载要求。晶状体集中系数的增加导致最低负荷要求的适度降低。但是，集中点速度显着影响了最小负荷要求。控制引起故障所需的力的最重要的热特性是板沿切割线的平均温度。这个概念是可行的，并为ASPOD项目的未来设计者提出了建议。

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