Model system for combined test of jet engine and air inlet duct ground rack
A technology of jet engine and model system, applied in jet engine test, gas turbine engine test, etc., can solve the problems of propulsion system performance deviates far, engine flow is small, and risk is low.
Pending Publication Date: 2022-01-18
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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Problems solved by technology
Solve the problem that the engine flow rate of the existing small engine platform is small, the Mach number of the air inlet outlet is too low, and the ground characteristics of the large flow inlet port cannot be obtained by using a single jet engine, and the performance of the propulsion system under the matching condition of the launch is far away Problem, the test model is simple, low risk and low cost
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[0016] In order to make the objectives, technical solutions and advantages of the implementation of the application clearer, the technical solutions in the implementation modes of the application will be described in more detail below with reference to the drawings in the implementation modes of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the present application. The embodiments described below by referring to the figures are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application. Embodiments of the pr...
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The invention belongs to an aviation aircraft design technology, and relates to a jet engine and air inlet joint ground bench test technology used on an aircraft. Specifically, the invention relates to a model system for a combined ground bench test by utilizing a jet engine and an independent air inlet duct. The model system for the combined test comprises an air inlet duct inlet, an air inlet duct outlet, a splitter, a splitter outlet, a jet engine and an engine exhaust nozzle. According to the model system for the combined test of the jet engine and the air inlet duct ground rack, the power system of the model system synchronously works through two or more small engines to increase the flow entering the air inlet duct, the airflow Mach number of a pipeline in the air inlet duct is increased, and the combined ground working characteristics of the air inlet duct and the engine are simulated, and the capability of the small engine ground test platform is improved. The model system is simple in structure, the engine test platform is easy to transform during test, and test verification can be carried out only through a small engine platform.
Description
technical field [0001] The present application belongs to the technical field of aviation vehicle design, and in particular relates to a model system for the joint test of a jet engine and an air intake system ground bench. Background technique [0002] At present, the power system configured on domestic and foreign small engine ground test platforms is a jet engine. In order to improve the thrust of the small engine test platform, the basic characteristics of the engine generally have the technical characteristics of high speed, low flow, and high exhaust temperature. Using this test platform to carry out the research on the matching characteristics of the intake port and the engine ground will cause a serious mismatch between the geometric size of the real intake port and the maximum flow rate after scaling. For example, if the geometric reduction ratio is 10, the outlet diameter of the inlet port is the same as that of the test engine, but the ratio of the real engine flo...
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IPC IPC(8): G01M15/14
CPCG01M15/14Y02T90/00
Inventor 王家启艾俊强邓一菊
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA