Anti-backfire device for motor-driven 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 serious energy consumption of anti-backfire devices and poor anti-backfire effects, and achieve anti-backfire Good fire effect, wide adjustment range, and the effect of expanding the pressure range
Active Publication Date: 2020-06-19
NANJING UNIV OF SCI & TECH
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Problems solved by technology
[0006] The purpose of the present invention is to provide a motor-driven paste propellant rocket engine anti-backfire device, which solves the problems of serious energy consumption and poor anti-backfire effect of the existing anti-backfire device
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Embodiment
[0035] combine figure 1 , a motor-driven paste propellant rocket motor anti-tempering device, comprising a hole plate 10, a heat-insulating hole plate 20, a hole plate seat 30, an execution chamber 50, an anti-backfire valve 40, a propellant supply device 70, a pusher Rod 80, transmission mechanism 90, coupling 100, motor 110.
[0036] The orifice plate 10, the heat insulating orifice plate 20, the orifice plate seat 30, the actuator chamber 50, the propellant supply device 70, the transmission mechanism 90, the coupling 100 and the motor 110 are coaxially arranged in sequence.
[0037] The orifice plate 10 is fixed on one end of the orifice plate base 30 through threads, and the heat-insulating orifice plate 20 is fixed in the orifice plate base 30 and is fixedly connected with the orifice plate 10 by pins. The actuating chamber 50 is fixedly connected to the other end of the orifice plate base 30 through threads, the propellant supply device 70 is fixedly connected with the a...
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The invention discloses a motor-driven paste propellant rocket engine return fire prevention device. The motor-driven paste propellant rocket engine return fire prevention device comprises a hole disc, a heat isolation hole disc, a hole disc base, an execution bin, a return fire prevention valve, a propellant supply device, a push rod, a transmission mechanism, a coupler and a motor. The hole discis fixed to one end of the hole disc base, the heat isolation hole disc is fixed in the hole disc base and fixedly connected with the hole disc, the execution bin is fixedly connected to the other end of the hole disc base, and the propellant supply device is fixedly connected with the execution bin. The push rod is arranged in the propellant supply device, one end of the push rod is connected with the return fire prevention valve after stretching into the execution bin, the other end of the push rod is fixedly connected with the output end of the transmission mechanism, and the input end ofthe transmission mechanism is fixedly connected with the motor through the coupler. In the aspect of response time, the length of the hole disc and the heat isolation hole disc is obtained through calculation, and sufficient time is reserved for running of the return fire prevention valve when the residual volume of the propellant is small; and in the aspect of the return fire prevention effect, an auxiliary valve and a second through hole of the heat isolation hole disc are tightly matched, the partition area is increased, and the return fire prevention effect is better.
Description
technical field [0001] The invention belongs to rocket engine technology, in particular to a backfire prevention device for a paste propellant rocket engine driven by a motor. Background technique [0002] Paste propellant is a new type of non-solid and non-liquid propellant. It is a special type of propellant in the field of chemical rocket propulsion. It is a non-Newtonian fluid and has the best comprehensive characteristics of liquid and solid propellants. It is like a solid propellant when it is stored, and it becomes fluid like a liquid propellant after pressurization, but it does not leak, does not explode, and is safer and more reliable. Paste rocket motors can be switched on and off and restarted multiple times, are easier to control than solid motors, and allow for a wide range of thrust adjustments. Therefore, it can be used as an engine for attitude adjustment control on missiles and satellites. [0003] In order to realize the thrust adjustment of the paste roc...
Claims
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IPC IPC(8): F02K9/70F02K9/86
CPCF02K9/70F02K9/86
Inventor 秦振杨陈雄蔡文祥许进升单新有
Owner NANJING UNIV OF SCI & TECH