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Gel propellant spray injector and engine thrust chamber

A technology of gel propellants and injectors, which is applied in the direction of machines/engines, rocket engine devices, jet propulsion devices, etc., can solve problems such as poor atomization effect, and achieve good stability and controllability

Pending Publication Date: 2020-10-02
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a gel propellant injector and engine thrust chamber in order to overcome the defect of poor atomization effect when the injector sprays gel propellant in the prior art

Method used

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  • Gel propellant spray injector and engine thrust chamber
  • Gel propellant spray injector and engine thrust chamber
  • Gel propellant spray injector and engine thrust chamber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Adopt methylhydrazine gel as the fuel gel propellant, dinitrogen tetroxide gel as the oxidant gel propellant, namely the gel propellant that the first nozzle 20, the second nozzle 30 spray is methylhydrazine gel, The gel propellant ejected from the third nozzle 40 and the fourth nozzle 50 is dinitrogen tetroxide gel.

[0058] The ejection port 104 of nozzle 10 is annular, the diameter D=0.4mm of the ejection port 104 of the first nozzle 20, the second nozzle 30, the diameter D=0.6mm of the ejection port 104 of the 3rd nozzle 40, the 4th nozzle 50, spray The length h=1mm of the mouth 104; the angle between the injection direction of the nozzle 10 and the central axis 60 is the jet inclination angle α, and the jet inclination angle α=35°; the angle between the two generatrices in the same radial plane of the contraction section 103 Be contraction angle β, contraction angle β=80 °; The velocity V=35m / s of nozzle 10 outlet gels; The quantity n=4 of the helical blade 102 of ...

Embodiment 2

[0061] Compared with Example 1, carbon particles with an average particle diameter of 15 microns and a mass concentration of 20% are added to the gel propellant to improve performance.

[0062] The injection opening 104 of nozzle 10 is annular, the diameter D=0.9mm of the injection opening 104 of the first nozzle 20, the second nozzle 30, the diameter D=1mm of the injection opening 104 of the third nozzle 40, the fourth nozzle 50, the injection opening The length h=1mm of 104; The included angle between the injection direction of nozzle 10 and central axis 60 is jet flow inclination angle α, and jet flow inclination angle α=45 °; Contraction angle β, contraction angle β=60 °; The velocity V=50m / s of nozzle 10 outlet gels; The quantity n=3 of the helical blade 102 of each nozzle 10; The number of turns m=0.5 of helical blade 102 around the injection direction The distance from the nearest point of the spiral blade 102 to the injection direction to the inner peripheral surface o...

Embodiment 3

[0065] Compared with Example 1, aluminum particles with an average particle diameter of 10 microns and a mass concentration of 35% are added to the gel propellant to improve performance.

[0066]The ejection port 104 of nozzle 10 is annular, the diameter D=1.2mm of the ejection port 104 of first nozzle 20, the second nozzle 30, the diameter D=1.6mm of the ejection port 104 of the 3rd nozzle 40, the 4th nozzle 50, spray The length h=1mm of the mouth 104; the angle between the injection direction of the nozzle 10 and the central axis 60 is the jet inclination α, and the jet inclination α=60°; the angle between the two generatrixes in the same radial plane of the contraction section 103 Be contraction angle β, contraction angle β=50 °; The velocity V=50m / s of nozzle 10 outlet gels; The quantity n=2 of the helical blade 102 of each nozzle 10; 0.3; the distance from the nearest point of the spiral blade 102 to the injection direction to the inner peripheral surface of the contracti...

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Abstract

The invention discloses a gel propellant spray injector and an engine thrust chamber; the spraying injector comprises four spray nozzles; the four spray nozzles includes a first spray nozzle, a secondspray nozzle, a third spray nozzle and a fourth spray nozzle; the first spray nozzle and the second spray nozzle are used for spraying a fuel gel propellant; the third spray nozzle and the fourth spray nozzle are used for spraying an oxidation agent gel propellant; the first spray nozzle, the second spray nozzle, the third spray nozzle and the fourth spray nozzle are arranged in sequence around acentral axis; the injecting direction of the first spray injector and the injecting direction of the second spraying injector hit against each other; and the injecting direction of the third spray injector and the injecting direction of the fourth spraying injector hit against each other. The fuel gel propellant and the oxidation agent gel propellant are obliquely arranged and a better atomization effect can be achieved; and especially in case of larger difference in physicochemical properties and difference in rheological property of the fuel gel propellant and the oxidation agent gel propellant or severe changes in environment and temperature, an ideal atomization mixing effect can be achieved, and the stability and controllability are good.

Description

technical field [0001] The invention relates to a gel propellant injector and an engine thrust chamber, which can be applied in the fields of aerospace, energy and power, chemical materials, medical care and sanitation. Background technique [0002] Gel is a polymer solution or sol with a certain concentration. The colloidal particles or polymers in the solution or sol are connected to each other under certain conditions to form a spatial network structure, and the structural voids are filled with liquid or gas as a dispersion medium. Such a special dispersion system is called a gel. As the concentration of additives increases, the viscosity of the general gel gradually increases, and finally loses its fluidity, and the whole system becomes an elastic semi-solid with a uniform appearance and a certain shape. [0003] Gel-like substances have both liquid and solid properties, and they always maintain a certain state when no external force is applied, but can freely change th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/52F02K9/62F02K9/60F02K9/70
CPCF02K9/52F02K9/60F02K9/62F02K9/70
Inventor 赵辉施浙杭刘海峰姚锋李伟锋刘昌国代正华吴欣洁许建良郝业峻梁钦锋魏雨昕王辅臣张璐瑶于广锁许毓珊王亦飞陈雪莉郭庆华郭晓镭王兴军刘霞陆海峰龚岩沈中杰丁路赵丽丽
Owner EAST CHINA UNIV OF SCI & TECH