A rocket engine heat-proof tail cabin structure

Abstract

The invention provides a heat-proof tail cabin structure of a rocket engine, comprising a tail cabin body, an assembly hole for assembling an engine nozzle is arranged on the tail cabin body, and a pressure ring is provided on the tail cabin body at a position corresponding to the assembly hole, The side of the pressure ring facing the center of the assembly hole is provided with a fitting part for filling the gap between the engine nozzle and the tail tank body, and the other side is set on the tail tank body, which corresponds to the position around the assembly hole A heat-proof ring is provided, and a fire-blocking ring is provided at the position corresponding to the pressure ring on the heat-proof ring, a filling gap exists between the fire-blocking ring and the fitting part of the pressure ring, and a packing assembly is arranged in the filling gap. The invention provides a rocket engine heat-proof tail cabin structure, which has good fireproof and heat-proof performance, can effectively prevent the tail flame of the rocket engine nozzle from affecting the equipment in the engine tail cabin, and ensures that the tail cabin can maintain continuous Stable operation is conducive to improving the overall safety and reliability of the rocket.

Description

technical field [0001] The invention belongs to the field of rocket tail cabins, in particular to a rocket engine heat-proof tail cabin structure. Background technique [0002] The rocket body structure is an important part of the rocket. Its function is to connect the various subsystems on the rocket, such as the payload, control system, power system and measurement system, into a whole, providing them with a reliable working environment and bearing the ground. External forces during operation and flight, maintain a good aerodynamic shape, and maintain the integrity of the rocket. The structure of the rocket body is generally composed of several parts such as the payload fairing, the propellant storage tank, the conveying system components, the instrument cabin, the interstage section, the engine mount and the tail compartment. The rudder surface control mechanism and the control mechanism have certain requirements on the working environment, so the fire and heat protectio...

AI Technical Summary

Problems solved by technology

The existing tail compartment structure is generally equipped with a heat-resistant layer structure on the side corresponding to the engine nozzle, but there is no effective fireproof sealing structure for the connection between the engine nozzle and the tail compartment body, and the single fireproof sealing structure is less affected by temperature changes. Large, the reliability of the single fire-proof sealing structure during the operation of the tail tank is not good, and it is easily damaged. The exhaust flame can easily enter or affect the tail tank through the connection between the engine nozzle and the tail tank body, resulting in damage to the tail tank or an increase in temperature. Greatly affected the stability of the tail compartment during operation

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