Charging grain structure of solid rocket engine

A technology of solid rockets and motors, which is applied in the direction of rocket motor devices, machines/engines, mechanical equipment, etc., and can solve the problems of increasing the diameter of the tube, increasing the width of the slot, and not conducive to improving the filling ratio of the charge combustion chamber.

Active Publication Date: 2014-03-19
BEIJING POWER MACHINERY INST
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Problems solved by technology

In particular, in order to ensure the integrity of the charge structure at the transition chute, measures to appropriately increase the diameter of the tube and the width of the slot are taken. Under the condition of a certain size of the combustion chamber shell, it is not conducive to improving the charge combustion chamber. The filling ratio brings certain resistance to improving the overall performance of solid rocket motors

Method used

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  • Charging grain structure of solid rocket engine
  • Charging grain structure of solid rocket engine
  • Charging grain structure of solid rocket engine

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Embodiment Construction

[0019] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] Through finite element analysis, under the condition of adopting the traditional equal-width slotted tube-groove type, the focus of charge structural integrity design is on the transition chute, and in the state of equal-width grooves, the smaller the diameter, the greater the stress and strain . In response to this problem, in order to improve the filling ratio of the charge, the general structure schematic diagram of the variable width groove tube groove charge type proposed by the present invention is shown in figure 2 , comprising an interconnected powder column inner tube 1 and a variable width groove 2, the charge powder column inner tube 1 and the variable width groove 2 are connected through a transitio...

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Abstract

The invention relates to a charging grain structure of a solid rocket engine, and belongs to the technical field of solid rocket engines. Under the conditions that a design limiting boundary is constant, the total grooving depth is equal to or larger than four fifths the outer radius of a grain, and the inner tube diameter of the grain is smaller than or equal to one fourth the outer diameter of the grain, the tube diameter and the grooving width can be reduced substantially through the coordination action of a variable-width groove part on the premise that integrity of the charging structure is ensured, so that the charge-weight ratio of a charging combustion chamber of the solid rocket engine adopting the propellant type is improved, and the purpose of improving the overall performance namely the volume energy density of the solid rocket engine is achieved.

Description

technical field [0001] The invention relates to the technical field of solid rocket motors, in particular to a charge column structure of a solid rocket motor. Background technique [0002] Solid rocket motor is a power device widely used in weapons and equipment, and the structure design of grain is one of the key technologies of solid rocket motor. During decades of engineering applications of solid rocket motors, a large number of related design technologies have been accumulated. [0003] The tube-groove charge type is a commonly used charge structure for solid rocket motors with a relatively large slenderness ratio and a relatively stable combustion surface change rule. The typical structure of the equal-width slot 101 is shown in figure 1 , by optimizing the structural parameters such as the number of grooves and the structural size of the pipe groove transition chute, the expected change law of the burning surface with the thickness of the meat can be realized. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/10
Inventor 吴华祯刘顶新苏华赖谋荣金勇
Owner BEIJING POWER MACHINERY INST
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