Solid rocket engine contractible-scaled experimental device with function of collecting alumina droplets

Abstract

The invention discloses a solid rocket engine contractible-scaled experimental device with the function of collecting alumina droplets. The solid rocket engine contractible-scaled experimental device with the function of collecting the alumina droplets is characterized by comprising a combustion chamber, wherein one end of the combustion chamber is sealed; in addition, the interior of the combustion chamber is used for placing a propellant; a convergent section, a test section and a jet pipe are sequentially arranged in the other end of the combustion chamber in a penetrating manner; the jet pipe communicates with the external; a plurality of alumina collection devices are arranged on the test section at intervals with an equal distance in an air flow direction; each alumina collection device is composed of a collection window formed in the outer wall of the test section; each collection window is provided with a sealed collection tank in a manner of communicating with the external; and a valve used for controlling communication or disconnection between each collection window and the test section is formed on each collection window. According to the solid rocket engine contractible-scaled experimental device, the problem in the prior art that particles at different positions in a flow passage section in the working engineering of an engine cannot be collected is solved.

Description

technical field [0001] The invention belongs to the technical field of solid rocket motors, and relates to a solid rocket motor scaling experiment device with the function of collecting alumina droplets. Background technique [0002] From the ablation experiments of the thermal insulation layer, the state parameters of condensed phase particles (particle concentration, particle size, distribution) are important factors affecting the ablation of thermal insulation materials. The particle size can directly affect the ablation of the thermal insulation material. For example, the large particle size has a strong ability to erode the carbonized layer, while the small particle size is relatively weak. In addition, there is a large difference in the flowability of particles with different particle sizes, resulting in a certain relationship between the particle size and the particle concentration on the surface of the thermal insulation material specimen, which indirectly affects th...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a solid rocket motor scaling experimental device with the function of collecting alumina droplets, so as to solve the problem that the prior art cannot collect particles at different positions in the flow channel section of the engine working engineering

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