Liquid ammonia propulsion system for pico-satellite or nano-satellite

A technology for propulsion systems and satellites, which is applied in the power supply systems of space vehicles, thrust reversers, and methods of container discharge, etc., can solve the problem of not disclosing the characteristics and functions of orbital control propulsion systems, and achieves light weight and high safety performance. , Easy to develop effect

Active Publication Date: 2015-02-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing domestic micro-propulsion technologies are aimed at micro-nano satellites, but few mentions are made specifically for the 10-kilogram Pina satellite; at the same time, the relevant inventions of domestic existing m

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  • Liquid ammonia propulsion system for pico-satellite or nano-satellite
  • Liquid ammonia propulsion system for pico-satellite or nano-satellite
  • Liquid ammonia propulsion system for pico-satellite or nano-satellite

Examples

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Embodiment Construction

[0035] A liquid ammonia propulsion system for a Pina satellite, including a digital signal processing circuit and a micro-propulsion device. The digital signal processing circuit and the micro-propulsion device are respectively installed on both sides of the bottom plate, and the shape of the bottom plate is the same as the cross-sectional shape of the satellite on which the liquid ammonia propulsion system is installed. Concrete realization index of the present invention is:

[0036] Thrust range: 30mN~80mN;

[0037] Total stroke: 24m / s;

[0038] System total leak rate: ≤1×10 -4 Pa·m 3 / s;

[0039] System thrust resolution: 65ug;

[0040] Total system mass: ≤1kg (excluding propellant and bottom plate);

[0041] Propellant filling amount: 0.318kg;

[0042] Tank volume: 0.60 liters;

[0043] Storage tank pressure: ≥2.4MPa;

[0044] Power Consumption:

[0045] (1) When the solenoid valve is fully open, the system power consumption is ≤6W;

[0046] (2) When the solenoi...

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Abstract

The invention discloses a liquid ammonia propulsion system for a pico-satellite or a nano-satellite. The liquid ammonia propulsion system comprises a digital signal processing circuit and a micro-propulsion device, wherein the micro-propulsion device comprises a propulsion system storage tank used for storing liquid ammonia, a thruster communicated with the propulsion system storage tank, and a solenoid valve mounted between the propulsion system storage tank and the thruster; the digital signal processor comprises an information monitoring module, a control switch module and an interface communication module; the information monitoring module is used for monitoring the current operation state of the propulsion system; the control switch module is used for controlling the solenoid valve so as to turn on or turn off the thruster; the interface communication module is used for feeding back information on the current operation state of the propulsion system to the satellite and receiving remote control commands sent by the satellite. The liquid ammonia propulsion system has the characteristics of small size, light weight, low power consumption, high specific impulse, simple structure, short development period, high safety performance, multi-functional integration, space plug and play function, universal applicability to 10 kg-magnitude pico-satellites and nano-satellites, and the like.

Description

technical field [0001] The invention belongs to the technical field of liquefied gas micro propulsion, and in particular relates to a liquid ammonia propulsion system suitable for a Pina satellite. Background technique [0002] Pina satellites have the characteristics of light weight, small size, short development cycle, low cost, high functional density, flexible launch, etc., and have broad application prospects in communication, remote sensing and other fields. The development of microsatellites can be said to be an epoch-making revolution in international aerospace technology and space technology, and at the same time, it also brings new opportunities and challenges to my country's aerospace industry. The classification of small satellites is generally based on weight, and there are different standards in this regard at home and abroad. The general principle of division in China is: satellites in the order of kilograms are called pico-satellites, and satellites in the o...

Claims

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Application Information

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IPC IPC(8): F03H99/00B64G1/42F17C13/02F17C13/04
CPCB64G1/42F03H99/00F17C13/025F17C13/026F17C13/04
Inventor 刘智蒙涛
Owner ZHEJIANG UNIV
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