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A hollow cathode structure for high reliability electric propulsion

A hollow cathode, electric propulsion technology, applied in the fields of plasma physics and thermophysics, can solve problems such as uncontrollable start-up time, and achieve the effects of accelerating electron emission, reducing ignition time, and improving consistency

Active Publication Date: 2021-10-22
NO 12 RES INST OF CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above problems, the present invention provides a hollow cathode structure for high reliability electric propulsion to solve the problem of uncontrollable start-up time of electric propulsion equipment in the prior art

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  • A hollow cathode structure for high reliability electric propulsion

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Embodiment Construction

[0024] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0025] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower" and so on is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed, or operate in a particular orientation, and th...

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Abstract

The embodiment of the present invention discloses a hollow cathode structure for electric propulsion with high reliability. The structure includes: a holding pole with an exit hole; Orifice plate; the outer wall of the air duct includes heaters; the cathode structure also includes an insulating ring to enhance the electric field strength on the surface of the emitter; the insulating ring is located between the emitter and the top orifice plate between. The hollow cathode structure provided by the present invention can effectively reduce the ignition time of the projectile and improve the controllability of the start-up time of the electric propulsion equipment. The present invention can also remove the degenerated substances on the surface of the projectile in a short time, so that the performance of the projectile can be quickly restored. Ensure the consistency of hollow cathode ignition time and the controllability of electric propulsion equipment.

Description

technical field [0001] The invention relates to the fields of plasma physics and thermophysics. More specifically, it relates to a hollow cathode structure for high reliability electric propulsion. Background technique [0002] As an advanced space propulsion technology, electric propulsion has been widely used on spacecraft such as the United States and Russia due to its high specific impulse advantage. It can reduce system quality, increase life, increase load, and improve orbit and attitude control accuracy. At present, the work of the mainstream electric propulsion system is based on the premise of the hollow cathode. The traditional hollow cathode structure mainly includes the emitter, the top hole plate, the heater, the contact pole and the air duct. Cavity, emitter inner cavity, the three inner cavities are connected, and are coaxially connected with the exit hole on the contact pole. The emitter is responsible for the ignition of the electric propulsion system, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03H1/00
CPCF03H1/0006F03H1/0087
Inventor 郝广辉邵文生张珂于志强
Owner NO 12 RES INST OF CETC
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