Laser propelled engine

An engine and laser technology, applied in the direction of machine/engine, rocket engine device, jet propulsion device, etc., can solve the problems of gas pressure increase, thrust increase, etc.

Active Publication Date: 2013-05-01
SHENZHEN XUNTIAN SPACE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this design also has problems
One is that the nozzle has a slit, and the working medium may escape the propulsion system through the slit instead of being sprayed out along the nozzle
The second is that the slit limits the increase of gas pressure in the nozzle and limits the increase of thrust

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] figure 1 It is a half-section view of the laser propulsion engine. The shape of the laser propulsion engine is similar to that of a traditional liquid rocket engine, including the combustion chamber and nozzle. The plane lens 1 and the convex reflector 3 are part of the combustion chamber wall, and the conical parabolic reflector 2 is fixed in the combustion chamber. The planar lens 1 should have two characteristics, one is high transmittance, less heat absorption, and large damage threshold; the other is that it can withstand higher combustion chamber pressure. Both the conical parabolic reflector 2 and the convex reflector 3 have high reflectivity. The working fluid of laser propulsion engine adopts liquid hydrogen or other substances with small molecular weight. The liquid hydrogen flows through the interlayer of the combustion chamber and the nozzle wall through the pipeline system, and cools the plane lens 1, the conical parabolic reflector 2 and the convex refl...

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PUM

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Abstract

The invention relates to a laser propelled engine. The laser propelled engine comprises a plane lens (1), a conical parabolic reflector (2), a convex reflector (3) and a spray pipe (5). The appearance of the laser propelled engine is similar to that of the traditional liquid rocket engine. The size of a combustion chamber can be amplified or reduced in proportion as required, and the size of the plane lens (1) can be adjusted along with adjustment of the size of the combustion chamber, therefore, the requirement on the heat resistance of the material of the plane lens (1) is reduced. The bottom of the conical parabolic reflector (2) is positioned on the top of the spray pipe, can prevent a high-temperature plasma from refluxing to the combustion chamber and has favorable protecting effecton all optical devices. A laser focus point is always arranged nearby the throat part of the spray pipe, and the spray pipe works stably and is free from upstream influence.

Description

technical field [0001] The invention relates to a propulsion system for low-earth orbit micro-satellite launch or space orbit transfer, in particular to a laser propulsion device that uses high-energy laser to provide energy required for propulsion in a long distance. Background technique [0002] Propulsion technology is the core technology of space vehicles. Existing aerospace propulsion devices are mostly liquid or solid rocket motors, which use oxidant and fuel to produce chemical reaction to generate high-temperature and high-pressure gas, and the gas is ejected from the nozzle to generate thrust. What they have in common is that the thermal energy generated by the chemical reaction is converted into jet kinetic energy through the nozzle, and the recoil is used to generate thrust. Research and practice have shown that for traditional chemical rocket engines, due to the limitation of combustion chamber temperature and molecular weight of combustion products, the specifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K9/62F02K9/97
Inventor 吴建军何振张代贤张锐刘泽军晏政
Owner SHENZHEN XUNTIAN SPACE TECH CO LTD
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