Iodine working medium electric propulsion storage and supply system based on sonic nozzle flow control

A sonic nozzle and flow control technology, which is used in thrust reversers, space navigation equipment, space navigation aircraft, etc., can solve the problems of complex control rate, slow response, low long-term work reliability, etc., to improve system flow regulation. The effect of speed, simple structure, improving thermal efficiency and temperature control response speed

CN113306746AActive Publication Date: 2021-08-27成都天巡微小卫星科技有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-08-27

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Abstract

The invention discloses an iodine working medium electric propulsion storage and supply system based on sonic nozzle flow control. The system comprises a control module, a square iodine storage tank, an iodine storage tank pressure sensor, a switch self-locking valve, a pressure regulating gas capacitor, a pressure regulating gas capacitor pressure sensor, a sonic nozzle assembly, a cathode supply pipeline and an anode supply pipeline. The square iodine storage tank, the switch self-locking valve, the pressure regulating gas capacitor and the sonic nozzle assembly are sequentially connected through a pipeline; the cathode outlet of the sonic nozzle assembly is connected with the cathode supply pipeline, and the anode outlet is connected with the anode supply pipeline; the pressure regulating gas capacitor pressure sensor is mounted on a pipeline between the pressure regulating gas capacitor and the sonic nozzle assembly; a pressure regulating gas capacitor heater covers the outer surface of the pressure regulating gas capacitor; and a pipeline temperature control module is coated on pipeline parts except the square iodine storage tank and the pressure regulating gas capacitor. According to the invention, the modular design of the iodine working medium electric propulsion storage and supply system is facilitated, the cost is reduced, and the system reliability and the accurate flow control capability in a high-temperature environment are improved.
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Description

technical field

[0001] The invention relates to the technical field of space electric propulsion, in particular to an iodine propellant electric propulsion storage and supply system based on sonic nozzle flow control. Background technique

[0002] In recent years, iodine working medium electric propulsion system has gradually become the electric propulsion technology favored by commercial small satellite platforms. Compared with the traditional xenon working medium electric propulsion system, the iodine working medium propulsion system has high storage density and low price, and has its unique advantages in the field of commercial satellites.

[0003] The iodine working medium electric propulsion storage and supply system is a system that stores solid iodine and supplies iodine vapor to the electric thruster at a precise flow rate. The system stores solid iodine in a storage tank. When the propulsion system works, the solid iodine needs to be sublimated into iodine vapor by...

Examples

Embodiment

[0040] The iodine storage tank of the existing system is cylindrical, and the heating methods include external winding heating and internal end surface radiation heating. Typical supply system flow control methods include proportional control valve control and thermal throttle control. In terms of iodine working medium storage, cylindrical storage tanks are not conducive to the modular design of the system. External wrap tank heating methods are inefficient and slow to respond, which is not conducive to energy management and tank pressure regulation. The heating area of ​​the internal end surface radiation heating is limited, and the response speed of the pressure control is slow. In terms of iodine working fluid supply, the proportional regulating valve is a frequently moving moving part, and contains non-metallic materials inside. Its long-term working reliability is low under high temperature environment and the possibility of condensation of iodine particles. The flow ra...