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Special-shaped charge structure for turbofan engine pyrotechnic starter

A technology of turbofan engine and starter, which is applied in the direction of rocket engine device, machine/engine, gas turbine device, etc., to achieve the effect of ensuring the output pressure of gas

Inactive Publication Date: 2019-04-05
北方特种能源集团有限公司西安庆华公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The special shape of the powder designed as a cone poses a high challenge to keep the output pressure constant

Method used

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  • Special-shaped charge structure for turbofan engine pyrotechnic starter
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  • Special-shaped charge structure for turbofan engine pyrotechnic starter

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.

[0019] The invention provides a special-shaped powder charge structure design for a pyrotechnic starter of a turbofan engine, which mainly includes a main charge structure design and a cladding layer structure design. The charge structure of the pyrotechnic starter is a special-shaped design. Through the reasonable design of the main charge and the coating design of the coating layer, it can keep the same shape as the shell, maximize the use of the charge space of the shell and achieve a constant pressure output.

[0020] The upper part of the main charge column is a conical structure, and the lower part is a tubular structure with a central hole, which is consistent with the shape of the shell and maximizes the use of charge space.

[0021] The cladding layer partially cov...

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Abstract

The invention provides a special-shaped charge structure for a turbofan engine pyrotechnic starter. The special-shaped charge structure for the turbofan engine pyrotechnic starter comprises a main charge column and a cladding layer, wherein the main charge column is in the same shape as the inner surface of a shell body of the pyrotechnic starter, and a central through hole is formed along the axis of the shell body; and the cladding layer is made of a fire-resistant material and partially coats the outer side and the bottom surface of the main charge column, and neutral burning of the main charge column is ensured. According to the special-shaped charge structure for the turbofan engine pyrotechnic starter, through a matching design of an internal charge structure and a shell body structure, utilization of charge space is maximized under the condition of ensuring an overall aerodynamic shape; and neutral burning is realized through a structure design of the cladding layer, and the constant gas output pressure is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of pyrotechnics, and relates to a special-shaped charge structure design, in particular to a special-shaped charge structure design of a pyrotechnic starter capable of realizing constant working pressure and maximizing the use of charge space. Background technique [0002] The pyrotechnic starter is installed on the tail cone of the turbofan engine to start the engine. The principle of action is that the pyrotechnic starter works, the propellant agent is burned to produce a large amount of gas, and the gas is ejected from the nozzle as a power source to blow and turn the rotor of the fuel oil engine to realize the rapid start of the engine. In order to ensure that the engine can start smoothly, as the power source of the gas output, it is usually required that the gas pressure output of the pyrotechnic starter be constant. In order to achieve this goal, designers usually design the charge as a simple end-fa...

Claims

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Application Information

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IPC IPC(8): F02C7/272F02K9/95
CPCF02C7/272F02K9/95
Inventor 杨正才王海清叶淑琴李宁仵和平刘建通郭攀峰冯文斌王学文刘发
Owner 北方特种能源集团有限公司西安庆华公司