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PULSED LASER PROPULSION EXPERIMENTS

机译：脉冲激光推进实验

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摘要

Pulsed thermal laser propulsion can become a very efficient, relatively near term technology for cheaply launching small satellites into low Earth orbits (LEO) with payload masses on the order of 5 -10 kg. In addition to flight demonstrations in the laboratory, measurements of fundamental propulsion parameters in the atmospheric environment as well as at reduced pressures down to 1 mbar have been made for a parabolic thruster, called "Lightcraft". The propulsion mode was either air breathing or with a plastic material as solid propellant. The results serve to model a typical launch of a nanosat-type laser-propelled vehicle into LEO. A two-stage operation with an air-breathing mode in the denser atmosphere can solve the propellant-consuming, drag-dominated transition through the atmosphere. System requirements and estimated costs for establishing a commercial launch system will be discussed.
机译：脉冲热激光推进可以成为一种非常有效的，相对近期的技术，用于将有效载荷质量为5 -10 kg的小型卫星廉价地发射到低地球轨道（LEO）中。除了在实验室进行飞行演示外，还对称为“ Lightcraft”的抛物线推进器进行了大气环境以及在低至1 mbar的减压下基本推进参数的测量。推进方式为呼吸或采用塑料作为固体推进剂。该结果有助于模拟将纳米卫星型激光推进飞行器典型地发射到LEO中。在较稠密的大气层中采用空气呼吸模式进行的两阶段操作可以解决在大气层中消耗推进剂，以阻力为主的过渡过程。将讨论建立商业发射系统的系统要求和估计成本。

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