Multifunctional simulation engine for adiabatic layer ablation test

Abstract

The invention discloses a multifunctional simulation engine for adiabatic layer ablation test, which comprises a gas generator. One end of the gas generator is sequentially connected with a low speedsection, a medium speed section, a high-speed section, an overload section and a plume section and forms a through cavity; the low speed section, the medium speed section and the high-speed section are coaxially connected; the overload section is raised up and coaxially connected with the plume section; the end portion of the overload section is provided with a jet exhaust; the plume section is arranged on the periphery of the jet exhaust; a test piece A, a test piece B and a test piece C are respectively correspondingly installed in the inner cavity of the low speed section, the medium speedsection and the high speed section; a test piece D is mounted at the lower section of the inner cavity of the overload section; a test piece E is mounted on the upper section of the inner cavity of the overload section; and a test piece F is arranged at the corresponding jet exhaust of the plume section. According to the multifunctional simulation engine for adiabatic layer ablation test in the invention, the test pieces are mounted in the inner cavity of each section, thereby detecting and understanding the ablation phenomenon of each section.

Description

【Technical field】 [0001] The invention belongs to the field of aerospace science and technology, and in particular relates to a multifunctional simulation engine for ablation test of heat insulating layer. 【Background technique】 [0002] At present, with the development of aerospace technology and the performance of missile weapons, all countries are pursuing the development of their own equipment performance in multiple aspects such as higher, faster, stronger, and more flexible. Therefore, this has higher performance requirements for the engine and the carrying capacity of the limit state. Among them, the most important point is that when the aircraft maneuvers at a large angle, the airframe will generate a high overload, because the current solid rocket motors use composite propellants. Among them, the combustion products will contain aluminum and other components. This two-phase flow will gather at the engine insulation layer under high overload conditions. If the insul...

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Problems solved by technology

[0004] Existing test devices are relatively simple, and it is impossible to test the ablation phenomenon of each section of the engine, and it is also impossible to understand the different states. Under different conditions, the ablation of the thermal insulation layer of the solid rocket motor cannot be known. How to design the layer can not only ensure the flight safety performance of the aircraft, but also minimize the negative mass of the thermal insulation design part, so that the aircraft can achieve the best performance

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