Metal integral skin structure of a rail control engine

Abstract

The invention relates to a metal integrated skin structure of a rail control engine, comprising: an integrally formed skin structure; a metal blocking piece body; and a restraint ring. The skin reserves a small nozzle nozzle gas channel, the whole does not need to be cut axially, and the structure is integrally formed. The outer edge of the metal blocking piece is designed in the shape of a gear, and is fixed at the gas channel opening of the small nozzle through a confinement ring. The skin is assembled in place from one side, and the skin, the metal blocking piece and the fixing ring are all fixed by mechanical contact. When the engine is working, opening the metal block means that the gear structure of the metal block is deformed and loses its binding force. The shape is guaranteed by the mechanical size, so that the opening pressure is more consistent. The metal integrated skin structure of the rail control engine of the invention can meet the needs of rail control engines with different working pressures.

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