Nozzle rubber cover of missile engine

A technology for rubber blocking and tail nozzles, which is applied to machines/engines, rocket engine devices, mechanical equipment, etc., can solve the problems of long manufacturing cycle and high cost, reduce ejection, increase opening pressure, and ensure the safety of ground equipment Effect

Inactive Publication Date: 2016-11-09
SHANGHAI XINLI POWER EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the thickness of the rubber in the center layer of the plugging cap is increased, the plugging mold needs to be modified or re-opened for processing. The manufacturing cycle is long and the cost is high, and due to the superelastic properties of rubber and the nonlinear relationship between the thickness and strength of the rubber plugging cap , multiple rounds of adjustments to the rubber thickness are required to determine the final state

Method used

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  • Nozzle rubber cover of missile engine
  • Nozzle rubber cover of missile engine

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Embodiment Construction

[0016] The invention will be described in more detail hereinafter with reference to the accompanying drawings showing embodiments of the invention. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0017] like figure 1 Shown is the structural representation of the rubber plug of the missile engine tail nozzle of the present invention.

[0018] The throat liner 1 is made of felt carbon / carbon composite material, and the throat liner 1 and the plug assembly are bonded at the converging section of the throat liner with 730 glue, and the thickness of the glue layer is not greater than 0.1. The assembly is made of 5171 raw rubber sheets bonded and cured in the mold, and double-layer cloth 3 is embedded in the middle for ...

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Abstract

The invention relates to an assembly structure capable of effectively improving the opening pressure of a nozzle rubber cover, and discloses a creative double-layer or multi-layer cloth-inserted rubber cover capable of effectively improving and stabilizing opening pressure. The rubber cover comprises a throat lining, a rubber layer and a cloth-inserted layer, is shaped like a bowl and is bonded with the throat lining through 730 glue at a convergent section. Two or more layers of inserted cloth are buried in the middle of the rubber layer so as to achieve reinforcement, the rubber layer is made of nitrile rubber materials, and the inserted cloth of the cover is butyronitrile oil-resistant rubber cloth. By means of the scheme, on the basis of keeping an original cover processing mold unchanged, the strength of a cover body is improved by increasing the number of layers of the inserted cloth, so that change of the design scheme of the cover is completed in a short period. The scheme is tested in experiments, the nozzle rubber cover of the missile engine is reasonable, simple, safe and reliable in structure, and a creative design concept and technical accumulation are provided for research of the nozzle cover.

Description

technical field [0001] The present invention proposes an innovative double-layer or multi-layer cloth-clad rubber plug that can effectively increase the opening pressure of the rubber plug. The strength is strengthened so that the modification of the plug can be completed in a short period of time, which greatly saves the development cost and time. Background technique [0002] The nozzle plug is a component of the solid rocket motor. Its main function is to quickly build up the ignition pressure of the engine, shorten the ignition delay time, and have a major impact on the ignition of the engine. In addition, the plug also plays a role in the internal cavity of the engine, especially It is the sealing, moisture-proof and dust-proof function of the propellant in the combustion chamber. The opening pressure of the nozzle plugging cover is low, which can increase the ignition delay time and the energy loss of the ignition powder. In severe cases, the engine may stall; if th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/97
CPCF02K9/978
Inventor 邹杰陈沛然张城孙福合穆康兴杨明
Owner SHANGHAI XINLI POWER EQUIP RES INST
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