Solid rocket motor cold test run test system

Abstract

The present invention provides a solid rocket engine cold test system. A working medium of a cold pressurization test is changed from gas to a gas-liquid mixture, to increase a pressure rising rate, and reduce a safety risk of a test. An engine that can be directly used for charging with a real propellant improves authenticity of the test. Specifically, the system includes a gas source controller,a pressure tank, a test pressure controller, an engine, and a gas / liquid pressure transmitter. The gas / liquid pressure transmitter includes a gas chamber communicating with the pressure tank and a liquid chamber communicating with a combustion chamber of the engine, and the liquid chamber and the combustion chamber of the engine are filled with the liquid medium. The gas / liquid pressure transmitter transmits a gas pressure of the gas chamber to the liquid chamber, and then the gas pressure is converted into a liquid pressure to be transmitted to the inside of the engine combustion chamber. The gas source controller is configured to control the gas pressure in the pressure tank. The test pressure controller is configured to control the gas pressure in the gas chamber and a pressure increase rate.

Description

technical field [0001] The invention relates to a test system, in particular to a cold test run of a solid rocket motor, and belongs to the technical field of solid rocket motors. Background technique [0002] The safety of solid rocket motors directly affects the safety of aircraft, equipment, and personnel, and is the top priority of engine research and development. The structural integrity of the charge is the core link in the safety design of solid rocket motors. Its design mainly relies on simulation guidance, and finally passes the test and verification. [0003] The traditional method of assessing the structural integrity of the charge is the ground thermal test of the engine: through the ground ignition of the solid rocket motor, not only the structural integrity of the engine can be assessed in the most realistic state, but also the safety and reliability of the entire engine system can be comprehensively assessed And performance, most convincingly. However, the g...

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Problems solved by technology

[0006] (2) During the engine charging process, the high-speed airflow rubs against the grain (propellant) in the combustion chamber to generate heat, and heats up in a local stagnation to generate hot spots. There is a risk of the propellant being ignited when it is directly used in an engine using real propellant. Low security; therefore, the test system is generally only used to simulate the charge of the engine, and the difference in charge state will affect the authenticity of the test

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