Direct-connected high-altitude simulation test axial-force-free intake system of ramjet engine

Abstract

A direct-connected high-altitude simulation test axial-force-free intake system of a ramjet engine comprises a test platform, an intake blind pipe support device, an axial-force-free intake device, aplenum chamber support device and an engine thrust measuring table. The engine thrust measuring table is fixed on the test platform, one end of the axial-force-free intake device is fixed on the testplatform through an intake blind pipe support device, and the other end of the axial-force-free intake device is fixed on the engine thrust measuring table through the plenum chamber support device. The invention provides the direct-connected high-altitude simulation test axial-force-free intake system of a ramjet engine, wherein the air intake structure ensures the supply of high-temperature compressed air to the engine and also eliminates the axial force generated by the air intake. The design is compact and reasonable, which can guarantee the leakage of compressed air at high temperature. This structure can adapt to various ramjet engine test requirements. The structure noticeably improves the precision of ramjet engine thrust measurement and the uncertainty of performance evaluation, reduces the number of engine tests and shortens the product development cycle.

Description

technical field [0001] The invention belongs to the field of ramjet simulation tests, in particular to a ramjet direct-connected high-altitude simulation test non-axial force air intake system. Background technique [0002] In the development process of the rocket ramjet engine, the ground test is a very important link. Only through the ground test can the key technical problems in the development be discovered and solved, and finally the engine structure that meets the technical indicators can be called out. When carrying out ground tests, it is necessary to deliver high-temperature compressed air to the engine intake to simulate the engine intake conditions during high-altitude flight; the intake structure is connected to the upstream air supply equipment and the engine intake, and the axial thrust cannot be generated during air supply, which will affect the stamping pressure. Engine thrust measurement. [0003] At present, the air intake structure used in the ground test...

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Problems solved by technology

[0004] In order to overcome the deficiencies in the background technology, the present invention discloses a ramjet direct-connected high-altitude simulation test without axial force air intake system, which meets the ramjet air intake requirements when the ramjet performs a direct-connected high-altitude simulation test, and at the same time Intake mechanism without axial force; to solve the problem that the existing test environment simulation system produces an additional force acting on the axial direction of the ramjet during the ground test, which affects the accurate measurement of engine thrust

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