Metal integrated skin structure of rail-controlled engine

Abstract

The invention relates to a metal integrated skin structure of a rail-controlled engine. The metal integrated skin structure comprises an integrally-formed skin structure, a metal blocking sheet body and a constraint ring. A small nozzle opening gas channel is reserved in the skin, axial cutting is not needed on the whole, and the structure is integrally machined and formed. The outer edge of the metal blocking sheet is designed to be in a gear shape and fixed to a small nozzle gas channel opening through the constraint ring, and the inner profile and the outer profile of the constraint ring are attached to the metal blocking sheet and the skin correspondingly. The skin is assembled in place from one side, and the skin, the metal blocking sheet and a fixed ring are fixed in a mechanical contact manner. When the engine works, the metal blocking sheet is opened, the gear structure of the metal blocking sheet deforms and loses constraint force, the appearance is guaranteed through the mechanical size, and the opening pressure intensity is consistent. The metal integrated skin structure of the rail-controlled engine can meet the requirements of rail-controlled engines with different working pressure intensities.

Description

technical field [0001] The invention relates to a metal skin structure of a rail control engine, in particular to a metal integrated skin structure of a rail control engine. It belongs to the technical field of solid rocket motors. Background technique [0002] The orbit control engine is a solid engine placed between the dual pulse engines to provide lateral overload of the missile, adjust the trajectory of the missile end, and increase the target hit rate. The orbital control engine has the characteristics of light weight, miniaturization, and fast response. Its working principle is: uniformly distribute small nozzles in the circumferential direction to realize the adjustable and controllable thrust and direction. [0003] In order not to affect the aerodynamic shape of the missile, it is necessary to reshape the shape of the missile. The outer wall of the orbital control engine is often designed with a skin structure. At the same time, in order not to affect the working ...

AI Technical Summary

Problems solved by technology

[0004] The main problem of the two existing blocking structures is: the combination of screw-connected metal blocking pieces adopts the reserved gap where the metal blocking piece is fixed to the small nozzle on the skin through screw connection, and the assembly process of this structure is relatively complicated. The assembly time of a single product is long, which is not conducive to mass production, and the opening method of the blocking piece combination is a breakthrough type, and the processing deviation within the tolerance of the matching relationship and the product will cause inconsistency in the opening pressure; the non-metallic plug connected by the pin The non-metallic blocking piece is fixed on the metal connection parts by pins, and the opening function is realized by breaking through the non-metallic part of the pin connection when opening. Due to the inconsistency of the strength of the non-metallic structure and the deviation of the fixed position of the non-metallic blocking piece pin , the opening pressure of this structure fluctuates greatly, which easily affects the opening performance

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