Small-thrust solid propellant grain combustion and propulsion performance detection test device

Abstract

The invention discloses a small-thrust solid propellant grain combustion and propulsion performance detection test device. The device comprises an ignition module, a pressure combustion chamber module, a high-speed photographing module, a gas supply module and a processing module, the pressure combustion chamber module comprises a combustion chamber, a spray pipe arranged in the combustion chamberand a sliding block driving the spray pipe to move in the combustion chamber. The spray pipe is used for fixing a solid propellant grain; a pressure transmitter and a thrust sensor are further arranged in the combustion chamber; by adjusting the relative distance between the sliding block and the thrust sensor, static testing and dynamic testing of combustion and propulsion performance of the solid propellant grain are achieved. The processing module is used for calculating the combustion performance and the propulsion performance of the solid propellant grain according to the environmental pressure in the organic glass cover, the displacement of the sliding block and the mass of the solid propellant grain. The device is small in size, high in integration degree and capable of efficiently, conveniently and accurately achieving dynamic and static tests of solid propellant grain combustion and propulsion performance.

Description

technical field [0001] The invention belongs to the technical field of chemical rocket propulsion, and relates to a combustion and propulsion performance detection test device, in particular to a solid propellant grain combustion and propulsion performance detection test device. Background technique [0002] With the miniaturization, light weight and long-distance development of aerospace equipment such as launch vehicles, manned spacecraft and artificial satellites, low-thrust solid propellants have also begun to become an important technical branch in the field of space propulsion. Different from traditional large solid propellants, low-thrust solid propellants have small volume, light weight, short burning time, and small thrust limit, but the burning rate and thrust change rate are fast. Therefore, the existing large-scale solid propellant combustion and performance testing devices are difficult to meet the test requirements of small-thrust solid propellants, and it is u...

AI Technical Summary

Problems solved by technology

This device solves the problem of difficult combustion and propulsion performance testing of small thrust solid propellant grains with a thrust peak value below 500N. At the same time, it realizes the miniaturization and integration of dynamic and static test devices, and can provide certain stressful environment

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