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Comparison of Chemical Propulsion Solutions for Large Space Debris Active Removal

机译:大空间碎屑主动去除化学推进解的比较

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摘要

In recent years, the development of active removal missions, to face the\udgrowing risk of catastrophic collisions and new debris generation due to the high\uddensity of orbital debris in LEO, is widely discussed in the international space\udcommunity. Besides legal and political issues, active removal solutions are strongly\udhampered by the high costs involved. Chemical propulsion might represent the\udpreferred way to carry out the controlled reentry of large abandoned objects, and, in\udthe perspective of cost reduction, hybrid rocket technology is considered a valuable\udoption, due to the potential lower fabrication and operational costs, if compared with\udbipropellant liquid systems. The possibility to use nontoxic propellants, besides\udtheir lower prices, reduces the complexity of handling, storability, and loading\udoperations, decreasing the connected costs and avoiding the need of a special staff.\udSolid rocket technology allows for very small and compact motor units, although\udwithout throttleability and reignition capability and characterized by lower safety\udlevel than liquid and hybrid systems. This study deals with the preliminary design\udand mass budget of solid, liquid, and hybrid propulsion modules, as well as their\udcomparison, to be used for active removal of large abandoned rockets in LEO.
机译:近年来,在国际空间\社区中广泛讨论了主动清除任务的发展,以应对由于低轨道轨道中高密度的碎片引起的灾难性碰撞和新碎片产生的日益增加的风险。除法律和政治问题外,积极的搬迁解决方案因所涉及的高昂费用而受到严重阻碍。化学推进可能是控制大型废弃物体进入大气层的\首选方法,并且,从降低成本的角度来看,混合动力火箭技术被认为是一种有价值的\备选方案,因为如果可能的话,其制造和运营成本可能更低与双推进剂液体系统相比。除了降低价格外,还可以使用无毒推进剂,从而降低了处理,存储和装载操作的复杂性,降低了连接成本,并避免了需要专门人员的工作。尽管没有节流能力和点火能力,但其安全性比混合动力系统低。这项研究涉及固体,液体和混合动力推进模块的初步设计预算和总预算,以及它们的预算比较,用于主动清除LEO中的大型废弃火箭。

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