Supersonic engine test bench and test method of supersonic engine by adopting same

Abstract

A supersonic engine test bench comprises a gas inlet system, an engine thrust measurement bench, an exhaust system, a tail gas treatment system, and a high-altitude simulation cabin. The high-altitudesimulation cabin is of a sealed shell structure, the engine thrust measurement bench is fixedly installed in the high-altitude simulation cabin, and a tested engine is installed on the engine thrustmeasurement bench; and the gas inlet system communicates with the tested engine or the exhaust system, one end of the exhaust system penetrates the surface of the shell of the high-altitude simulationcabin and is fixedly installed in the high-altitude simulation cabin, and the other end of the exhaust system fixedly communicates with the tail gas treatment system. According to the supersonic engine test bench, supersonic speed air inlet state simulation of the supersonic speed engine is achieved during ground tests of the supersonic speed engine and the engine; and moreover, the engine thrustmeasurement bench achieves the measurement of the engine thrust, is simple in structure, and achieves the treatment of the tail gas of the engine test bench, so that the gas discharged from the gas outlet of an alkaline spray tower meets the national pollutant discharge standard.

Description

technical field [0001] The invention relates to the technical field of engine testing, in particular to a supersonic engine test bench and a testing method thereof. Background technique [0002] Engine testing and testing technology is an important part of solid propulsion technology. Before the flight test of an aeroengine, a high-altitude simulation test needs to be done on the ground. During the engine test, a set of intake parameters are required, including the total intake pressure and the intake air flow rate. , intake air oxygen content, total intake air temperature, and engine fuel supply are called intake state points. After reaching the set value and stabilizing at the same time, record its performance and parameters or evaluate its performance. With the maturity of the engine, the application of the supersonic engine is becoming more and more extensive. On this basis, the engine intake system needs to simulate the supersonic speed of the supersonic engine when it ...

AI Technical Summary

Problems solved by technology

The main reason is that the flight test is costly, long cycle, small amount of information harvested, risky, and requires a lot of manpower

This requires the ground test of the engine. The ground test of the engine refers to the static test of the system on the ground according to specific conditions and environmental requirements, and obtains information describing various performance indicators of the system, so as to solve the key problems in the engine thrust test process. However, in the existing technology, there is no mature technology for the experimental equipment of engine thrust

[0004] In addition, for the engine test bench of aerospace engines such as turbofan engines and solid impulse engines, the main components of the exhaust gas are carbon dioxide and hydrogen sulfide and contain certain particulate matter. The particulate matter mainly includes boron trioxide and magnesium oxide. The test bench If the discharged waste gas is directly discharged into the atmosphere, it will greatly pollute the atmosphere and cause acid rain. At the same time, the discharged particulate matter will form pollutants such as PM10 and PM2.5 to pollute the atmosphere, which is extremely unenvironmental. There is no mature and effective method for exhaust gas treatment of engine test benches for turbofan engines, solid impulse engines and other aerospace engines

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