Solid State Digital Propulsion “Cluster Thrusters” For Small Satellites, Using High Performance Electrically Controlled Extinguishable Solid Propellants
Solid State Digital Propulsion “Cluster Thrusters” For Small Satellites, Using High Performance Electrically Controlled Extinguishable Solid Propellants
复制标题
用于小型卫星的固态数字推进“集束推进器”，采用高性能电控可灭火固体推进剂
DOI：
--
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
C. Grix
中科院分区：
文献类型：
--
作者：
W. Sawka;Arthur Katzakian;C. Grix
电控可熄灭固体推进剂（ESCSP）能够通过应用电力进行多次点火、熄灭和节流控制。现在已经测试了直径为3英寸的核心和末端燃烧无运动部件ECESP颗粒/电机。正在进行的研究已经产生了一个新的系列，甚至更高性能的ECESP，提供高达10%的性能提高，制造容易，并显着提高导电性。高导电性不适合大型电机；然而，它是理想的向下缩放到微型和微型推进应用，腹板厚度小于0.125英寸/直径。作为固溶体推进剂，该ECESP分子均匀，无颗粒结构。由于这种均匀性和可行的粘度，它可以直接铸造成薄层或真空铸造成复杂的几何形状。同轴堆和颗粒堆都得到了证明。将单个推进剂同轴颗粒和/或颗粒堆组合在一起形成三维阵列，产生模块化集群推进器。采用电子行业的无晶圆厂制造方法和标准将以低成本提供定制的、高度可复制的微推进阵列和集群。这些堆栈和集群推进器设计为太阳能电池板和/或实验提供了一个小的占地节省航天器表面面积。这些推进器的简单性将使它们能够广泛用于微微型卫星的主要推进，ACS和编队飞行应用。大型航天器可能会在加长臂、在轨加油、气动执行器和气体发生器上使用ECESP推进器。
Electrically controlled extinguishable solid propellants (ESCSP) are capable of multiple ignitions, extinguishments and throttle control by the application of electrical power. Both core and end burning no moving parts ECESP grains/motors to three inches in diameter have now been tested. Ongoing research has led to a newer family of even higher performance ECESP providing up to 10% higher performance, manufacturing ease, and significantly higher electrical conduction. The high conductivity was not found to be desirable for larger motors; however it is ideal for downward scaling to micro and pico- propulsion applications with a web thickness of less than 0.125 inch/ diameter. As a solid solution propellant, this ECESP is molecularly uniform, having no granular structure. Because of this homogeneity and workable viscosity it can be directly cast into thin layers or vacuum cast into complex geometries. Both coaxial and grain stacks have been demonstrated. Combining individual propellant coaxial grains and/or grain stacks together form three-dimensional arrays yield modular cluster thrusters. Adoption of fabless manufacturing methods and standards from the electronics industry will provide custom, highly reproducible micro-propulsion arrays and clusters at low costs. These stack and cluster thruster designs provide a small footprint saving spacecraft surface area for solar panels and/or experiments. The simplicity of these thrusters will enable their broad use on micro-pico satellites for primary propulsion, ACS and formation flying applications. Larger spacecraft may find uses for ECESP thrusters on extended booms, on-orbit refueling, pneumatic actuators, and gas generators.