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公开(公告)号:US6150764A
公开(公告)日:2000-11-21
申请号:US215598
申请日:1998-12-17
CPC分类号: H05H1/52 , F03H1/0075
摘要: A tandem Hall field plasma accelerator with closed electron drift includes a magnetic circuit having an inner pole and an outer pole and a magnetic field source and a discharge cavity disposed axially in tandem; the discharge cavity including an axially extending accelerator section defining an exit aperture between the inner and outer poles and a plenum section extending radially outwardly and upstream of the accelerator section and including an anode and a propellant injector. Also disclosed is the use of an electromagnetic coil which provides a magnetic field in a magnetic circuit and includes a multiple turn winding wound on an electrically conductive bobbin. The plasma discharge is connected electrically in series with the electromagnetic coil and a power source with a bobbin defining a single turn secondary coil winding on the magnetic circuit which reduces magnetic field fluctuations in the plasma discharge and reduces eddy currents and consequent heating of the magnetic circuit.
摘要翻译: 具有闭合电子漂移的串联霍尔场等离子体加速器包括具有内极和外极以及串联轴向布置的磁场源和放电腔的磁路; 所述排放腔包括轴向延伸的加速器部分,其限定所述内极和外极之间的出口孔,以及在所述加速器部分的径向向外和上游延伸并包括阳极和推进剂喷射器的增压部。 还公开了使用在磁路中提供磁场并且包括缠绕在导电线轴上的多匝绕组的电磁线圈。 等离子体放电与电磁线圈串联连接,并具有线圈的电源,该线圈具有在磁路上限定单匝次级线圈绕组,其减小了等离子体放电中的磁场波动,并且减小了涡流并导致磁路的加热 。
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公开(公告)号:US20100207527A1
公开(公告)日:2010-08-19
申请号:US10761565
申请日:2004-01-22
IPC分类号: H01J7/24
CPC分类号: F03H1/0018
摘要: A multi-functional power supply system for a Hall thruster including a thruster assembly for providing a plasma discharge and a cathode assembly for providing electrons. The cathode assembly includes an emitter, a keeper with a current limiting device, and a heater. A magnetic field source is operatively associated with the cathode assembly for generating a magnetic field to control the discharge. A plasma discharge circuit creates a plasma and accelerates the plasma to produce thrust. A power supply is connected to the keeper and the plasma discharge circuit and is connected to the heater through a switching device responsive to a predetermined condition for interrupting the power to the heater and simultaneously enabling the power supply to deliver power to the keeper and the plasma discharge circuit to initiate production of thrust.
摘要翻译: 一种用于霍尔推进器的多功能电源系统,包括用于提供等离子体放电的推进器组件和用于提供电子的阴极组件。 阴极组件包括发射器,具有限流装置的保持器和加热器。 磁场源可操作地与阴极组件相关联,用于产生磁场以控制放电。 等离子体放电电路产生等离子体并加速等离子体产生推力。 电源连接到保持器和等离子体放电电路,并且响应于用于中断加热器的电力的预定条件通过开关装置连接到加热器,并且同时使电源能够向保持器和等离子体输送功率 放电电路开始产生推力。
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公开(公告)号:US08024917B2
公开(公告)日:2011-09-27
申请号:US10761565
申请日:2004-01-22
IPC分类号: F03H1/00
CPC分类号: F03H1/0018
摘要: A multi-functional power supply system for a Hall thruster including a thruster assembly for providing a plasma discharge and a cathode assembly for providing electrons. The cathode assembly includes an emitter, a keeper with a current limiting device, and a heater. A magnetic field source is operatively associated with the cathode assembly for generating a magnetic field to control the discharge. A plasma discharge circuit creates a plasma and accelerates the plasma to produce thrust. A power supply is connected to the keeper and the plasma discharge circuit and is connected to the heater through a switching device responsive to a predetermined condition for interrupting the power to the heater and simultaneously enabling the power supply to deliver power to the keeper and the plasma discharge circuit to initiate production of thrust.
摘要翻译: 一种用于霍尔推进器的多功能电源系统,包括用于提供等离子体放电的推进器组件和用于提供电子的阴极组件。 阴极组件包括发射器,具有限流装置的保持器和加热器。 磁场源可操作地与阴极组件相关联,用于产生磁场以控制放电。 等离子体放电电路产生等离子体并加速等离子体产生推力。 电源连接到保持器和等离子体放电电路,并且响应于用于中断加热器的电力的预定条件通过开关装置连接到加热器,并且同时使电源能够向保持器和等离子体输送功率 放电电路开始产生推力。
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公开(公告)号:US06735935B2
公开(公告)日:2004-05-18
申请号:US10015009
申请日:2001-12-11
IPC分类号: H05H0000
CPC分类号: F03H1/0062 , F03H1/0087 , H05H1/54
摘要: A pulsed Hall thruster system includes a Hall thruster having an electron source, a magnetic circuit, and a discharge chamber; a power processing unit for firing the Hall thruster to generate a discharge; a propellant storage and delivery system for providing propellant to the discharge chamber and a control unit for defining a pulse duration &tgr;
摘要翻译: 脉冲霍尔推进器系统包括具有电子源,磁路和放电室的霍尔推进器; 功率处理单元,用于点火霍尔推进器以产生放电; 用于向喷射室提供推进剂的推进剂储存和输送系统和用于定义脉冲持续时间τ<0.1D 3 rho / {dot over(m)的控制单元,其中d是推进器的特征尺寸,rho是 在标准条件下的推进剂密度,(点)(m是用于操作功率处理单元向霍尔推进器提供预先选择的持续时间,τ或运行推进剂储存和输送的功率脉冲的推进剂质量流量 系统以提供持续时间,τ的推进剂流动脉冲,或者同时提供作为脉冲的推进剂流脉冲,以同步地到达放电室,以使霍尔推进器产生谨慎的输出脉冲。
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公开(公告)号:US4391561A
公开(公告)日:1983-07-05
申请号:US343688
申请日:1981-04-13
申请人: Donald A. Smith , Bruce M. Pote
发明人: Donald A. Smith , Bruce M. Pote
IPC分类号: B65G53/48
CPC分类号: B65G53/48
摘要: A pump for feeding granular material into a pressurized zone having a feed screw (14) located within a cylinder (12). The cylinder is tapered (34) at its discharge end, and the outside diameter of the flights (32) is also tapered (43). The clearance (38) of the tapered flights is significantly greater than the clearance (40) of the non-tapered flights.
摘要翻译: PCT No.PCT / US81 / 00485 Sec。 371日期:1981年4月13日 102(e)日期1981年4月13日PCT提交1981年4月13日PCT公布。 出版物WO82 / 03615 日本1982年10月28日。一种用于将颗粒材料进料到具有位于气缸(12)内的进料螺杆(14)的加压区域中的泵。 气缸在其排出端处是锥形的(34),并且翼片(32)的外径也是锥形的(43)。 锥形叶片的间隙(38)显着大于非锥形飞行的间隙(40)。
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