Solid-liquid engine grain burning surface uniform retreating control method
A control method and engine technology, which is applied in the direction of machines/engines, rocket engine devices, mechanical equipment, etc., can solve problems such as uneven retreat of the burning surface, and achieve the effect of improving the retreat rate of the grain column and the combustion efficiency of the engine
Active Publication Date: 2021-09-07
INST OF MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0004] In view of the technical problem in the prior art that the burning surface recedes unevenly along the grain length direction, the purpose of the present invention is to provide a method for controlling the uniform retreat of the grain burning surface of a solid-liquid engine
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Embodiment 1
[0029] like Figure 1 to 5 As shown, a solid-liquid engine pharmaceutical column is uniformly retracted, and includes the following steps:
[0030] (1) Establish a pharmaceutical column injection passage: establish a sandwich pharmaceutical column base 1, sandwich pharmaceutical column matrix 1, a plurality of groups of uniform mounting sandwich structures, fuel medium 4 filling between adjacent two sets of blades, sandwich The column matrix 1 and the sandwich structure blade 3 are connected to each other to form a spray passage;
[0031] (2) Controlling the intake method: the front end of the injection passage in step (1) is hollow axial cavity 1-3, and the rear end is a hollow radial cavity 3-3, and the gas oxidant self-transport pipe 2 enters the laminated pharmaceutical column. In the base 1, the gas oxidant is then intuitive along the hollow radial gas chamber, and the gas oxidant is then intuitive in the combustion in the hollow radial gas chamber 3-3;
[0032] (3) Internal u...
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Abstract
The invention belongs to the technical field of solid-liquid rocket engines, and aims to provide a solid-liquid engine grain burning surface uniform retreating control method in order to solve the technical problem that in the prior art, retreating of a burning surface in the length direction of a grain is not uniform. The method specifically comprises the following steps that (1) a grain injection channel is established, specifically, a sandwich grain base body and sandwich structure blades communicate with each other to form the injection channel; (2) a gas inlet manner is controlled, specifically, firstly, a gas oxidizing agent is fed along a hollow axial gas cavity, and then the gas oxidizing agent is fed into a combustion chamber along a hollow radial gas cavity; and (3) internal uniform injection is carried out, specifically the oxidizing agent is uniformly injected into the combustion chamber from the inside along an internal combustion channel. Uniform retreating of a grain burning surface is achieved through the constant flux of the oxidizing agent in the grain combustion channel direction, in addition, the turbulence effect on fuel gas is enhanced through injection of the oxidizing agent in the fuel channel and the blades, the turbulence combustion intensity can be improved, and the grain retreating speed and the engine combustion efficiency are improved.
Description
Technical field [0001] The present invention belongs to the technical field of solid-liquid rocket engines, and more particularly to a uniform post-retardation control method for solid-liquid engine pharmaceutical pillars. Background technique [0002] Solid-liquid rocket engine uses a propellant combined with solid and liquid, generally uses a combination of solid fuel and liquid oxidant. Many advantages of liquid rocket engines and solid rocket engines, such as simple structure, good security. , Thrust, green environmental protection, etc. [0003] The combustion reaction in the solid-liquid rocket engine combustion chamber is a typical diffusion combustion, and the combustion process occurs in the boundary layer away from the surface of the fuel and runs through the entire fuel passage. The retardation rate is a key indicator for the performance evaluation of solid-liquid engine, which is described in the unit time of the fuel, namely the fuel mass flow involved in the combust...
Claims
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Login to View More IPC IPC(8): F02K9/72
CPCF02K9/72
Inventor 王泽众林鑫孟东东张泽林李飞余西龙
Owner INST OF MECHANICS - CHINESE ACAD OF SCI