Full-ring stamping combustion test air inlet platform cooled through natural air entraining

Abstract

The invention provides a full-ring stamping combustion test air inlet platform cooled through natural air entraining, and the platform comprises a high-temperature air inlet pipeline which is provided with an inner duct and an outer duct; the thermal protection sleeve is arranged on the outer side of the high-temperature air inlet pipeline and is connected with the high-temperature air inlet pipeline through the front rectification connecting plate and the rear rectification connecting plate, so that a thermal protection channel is formed on the outer side of the high-temperature air inlet pipeline; the low-pressure test cabin is wrapped outside the high-temperature air inlet pipeline and the thermal protection sleeve; one end of the air guide pipe is connected outside the low-pressure test cabin, and the other end is connected with the thermal protection sleeve; the switching section is arranged at the tail end of the high-temperature air inlet pipeline and the tail end of the thermal protection sleeve, the rear end of the switching section is connected with the stamping combustion chamber test piece, the exhaust section is installed on the rear side of the stamping combustion chamber test piece, a conical cylinder is arranged in the center of the switching section, and an inner-layer channel and an outer-layer channel are sequentially arranged on the outer side of the conical cylinder in the radial direction. An inner duct and an outer duct of the high-temperature air inlet pipeline are transited into a single-channel air inlet structure meeting the test requirement through the inner-layer channel, and the outer-layer channel is communicated with the thermal protection channel.

Description

technical field [0001] The application belongs to the technical field of aero-engine test, and in particular relates to a full-ring ramjet combustion test air intake platform cooled by natural bleed air. Background technique [0002] The ramjet is an engine suitable for ultra-high-speed flight. In order to realize the experimental research of the ramjet combustion chamber, a test platform suitable for the ramjet is required. [0003] The existing test air intake platform is generally a dual-channel structure, the inner channel flows high-temperature gas, and the outer channel introduces cold air through forced intake for cooling protection, but it needs to provide a special cold air source, and the test system is complex and costly. SUMMARY OF THE INVENTION [0004] The purpose of the present application is to provide a full-ring ramjet combustion test air intake platform cooled by natural bleed air, so as to solve or alleviate at least one problem in the background art. ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a full-ring ram combustion test intake platform cooled by natural bleed air to solve or alleviate at least one of the problems in the background art

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