Anti-backfire device for mechanical paste propellant rocket engine
A paste propellant and rocket engine technology, which is applied to rocket engine devices, machines/engines, jet propulsion devices, etc., can solve the problems of unsatisfactory anti-tempering effect, harsh selection of rubber diaphragm materials, etc., and achieve easy miniaturization Chemical, good anti-tempering effect, small space occupation
Inactive Publication Date: 2017-08-04
NANJING UNIV OF SCI & TECH
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Problems solved by technology
The main disadvantage is that the selection of rubber diaphragm material is relatively harsh, and the anti-tempering effect is not ideal
Method used
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[0039] to combine figure 1 :
[0040] A mechanical paste propellant rocket engine flashback prevention device, comprising a tank connection part 1, a piston 2, a gasket 3, a spring 4, an orifice plate seat 5, a piston casing 6 and a paste propellant gas generator 7; One end of the piston casing 6 extends into the medicine outlet of the storage tank connection part 1, and is threadedly connected with the storage tank connection part 1; the outer wall and the inner wall of the piston 2 are composed of two cylindrical surfaces with different diameters, and the piston 2 is placed in the piston casing 6 Among them, the large-diameter cylindrical surface of the outer wall surface is slidingly and sealingly matched with the piston housing 6, and is limited by the annular step surface in the tank connection part 1, and has a position state of blocking the medicine outlet channel of the tank connection part 1; A spring 4 is sheathed on the small-diameter cylindrical surface of the out...
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The invention discloses a mechanical paste propellant rocket engine anti-backfire device, which comprises a storage tank connection part provided with a paste propellant discharge channel, a piston shell fixedly connected to the discharge end of the storage tank connection part, and an outer Both the wall surface and the inner wall surface are composed of cylindrical surfaces of different diameters, and the piston with a large diameter cylindrical surface on the outer wall surface is sliding and sealed with the inner wall of the piston housing, and the spring is set on the small diameter cylindrical surface of the outer wall surface of the piston, and one end is fixed to the piston housing. The other end extends into the piston and is slidingly and sealingly matched with the large-diameter cylindrical surface on the inner wall of the piston, and is limited by the step surface between the small-diameter cylindrical surface and the large-diameter cylindrical surface on the inner wall of the piston. The generator is an orifice plate seat fixed at the drug inlet end of the paste propellant gas generator; the invention has the advantages of simple principle, reliable operation, low cost, good anti-tempering effect, reasonable structure layout, and easy miniaturization.
Description
technical field [0001] The invention belongs to the technical field of rocket engines, in particular to a mechanical paste propellant rocket engine anti-backfire device. Background technique [0002] Most of the power units used by current spacecraft or space vehicles are liquid propellant rocket motors and solid propellant rocket motors. In the process of developing liquid rocket motors, difficulties in storage, high toxicity, strong corrosion, inflammability and explosion, and environmental pollution have been encountered. Solid rocket motors have achieved great development due to overcoming the above shortcomings, but liquid engines are more advanced than liquid rocket motors. The advantages of high impact, adjustable thrust, and repeatable ignition are difficult to achieve with solid propellants. As an important hotspot of new propellants in recent years, paste propellant has aroused great interest of experts from various countries. This type of propellant not only ove...
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IPC IPC(8): F02K9/70
Inventor 杨海杜镇志叶小兵陈雄单新有许进升郑健
Owner NANJING UNIV OF SCI & TECH