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    • 12. 发明授权
    • Pulsed plasma thruster having an electrically insulating nozzle and
utilizing propellant bars
    • 具有电绝缘喷嘴并利用推进剂棒的脉冲等离子体推进器
    • US5924278A
    • 1999-07-20
    • US832293
    • 1997-04-03
    • Rodney L. BurtonSusan G. DelmedicoMichael Wilson
    • Rodney L. BurtonSusan G. DelmedicoMichael Wilson
    • F03H1/00
    • F03H1/0087F03H1/0012
    • A thruster includes a body having a cavity with a discharge end, an apparatus for generating an electric arc having a current path through the cavity between first and second locations, and a non-gaseous, non-liquid propellant material (26) that forms an ionized gas as an incident of being heated. The propellant material (26) is heated by the electric arc to produce an ionized gas in the cavity. The cavity is configured to cause the ionized gas to be expelled from the cavity through the discharge end of the cavity in a flow path that is substantially parallel to the electric arc and current path within the cavity. A thruster includes a body having a cavity with a discharge end, a substantially non-ablating, electrically insulating nozzle (30) having an inlet disposed adjacent to the discharge end and an outlet, a first electrode (32) disposed within the cavity, a second electrode (34) disposed adjacent to the outlet of the nozzle, an electric power supply connected to the first and second electrodes to generate an electric arc having a current path therebetween, and a non-gaseous, non-liquid propellant material that forms an ionized gas as an incident of being heated. The propellant material is heated by the electric arc to produce an ionized gas in the cavity. A method of producing plasma to be used to propel a mass includes the steps of providing a cavity with a discharge end, providing a non-gaseous, non-liquid propellant material that forms an ionized gas as an incident of being heated, generating an electric arc having a current path through the cavity between first and second locations, heating the propellant material to produce an ionized gas in the cavity; and expelling the ionized gas from the cavity through the discharge end of the cavity in a flow path that is substantially parallel to the electric arc and current path within the cavity.
    • 推进器包括具有排放端的空腔的主体,用于产生具有通过第一和第二位置之间的空腔的电流路径的电弧的装置和形成非气态非液体推进剂材料(26)的装置 电离气体作为被加热的事件。 推进剂材料(26)被电弧加热以在空腔中产生电离气体。 空腔构造成使得离子化气体通过空腔的排放端在与空腔内的电弧和电流路径基本平行的流动路径中从腔排出。 推进器包括具有排放端的空腔的本体,具有邻近排放端设置的入口和出口的基本上非消融的电绝缘喷嘴(30),设置在空腔内的第一电极(32), 与喷嘴的出口相邻设置的第二电极(34),连接到第一和第二电极以产生其间具有电流路径的电弧的电力供应源和形成非气体的非液体推进剂材料 电离气体作为被加热的事件。 推进剂材料被电弧加热,以在空腔中产生电离气体。 一种生产用于推进物料的等离子体的方法包括以下步骤:提供具有放电端的空腔,提供形成电离气体的非气态非液体推进剂材料,作为加热入口,产生电 电弧具有通过第一和第二位置之间的空腔的电流路径,加热推进剂材料以在空腔中产生电离气体; 并且通过基本上平行于空腔内的电弧和电流路径的流动路径将来自空腔的电离气体排出空腔的排放端。