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Low-scattering shell suitable for external field wind environment electromagnetic test and used for engine

A low-scattering, engine technology, applied in radio wave measurement systems, instruments, etc., to achieve the effect of small structure size and simple shape

Pending Publication Date: 2020-04-03
AECC SICHUAN GAS TURBINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, according to the available data, there is no domestic research content that can solve the above problems.

Method used

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  • Low-scattering shell suitable for external field wind environment electromagnetic test and used for engine
  • Low-scattering shell suitable for external field wind environment electromagnetic test and used for engine
  • Low-scattering shell suitable for external field wind environment electromagnetic test and used for engine

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Experimental program
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Effect test

Embodiment Construction

[0035] The present invention fully considers the low radar scattering cross-section requirements of the engine background in the wide-angle area, and the conditions of the electromagnetic test environment of the external wind environment, and designs a low-scattering casing suitable for the electromagnetic test of the external wind environment. Its low scattering characteristics The angular range is extended to ±60°, and the low-scattering housing equipped with the engine has a smaller structural size and a simpler shape. The following will refer to Figure 1-7 Describe in detail the low-scattering casing for an engine used for electromagnetic testing in an external wind environment.

[0036] The low-scattering casing for the engine suitable for electromagnetic testing in the wind environment of the present invention is a flat oval conical structure and includes a front section 1 and a rear section 2, and the front section includes a flat oval section 11 and a semi-spindle sec...

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Abstract

The invention provides a low-scattering shell suitable for an external field wind environment electromagnetic test and used for an engine. The low-scattering shell is of a flat oval conical structureand comprises a front section and a rear section. The front section comprises a flat oval cavity part and four semi-spindle body parts; wherein one positioning bolt is arranged in each half spindle body part of the front section; the rear section comprises a tail cone matched with the front edge of the front section; wherein the front edge of the front section and the part, matched with the frontedge of the front section, of the rear-section cone of the rear section comprise sawtooth-shaped structures, and when an engine is placed in the front section to be subjected to an electromagnetic test, the tail portion exposes a spray pipe of the engine, and the size of the tail portion in the width direction is matched with that of the spray pipe.

Description

technical field [0001] The invention belongs to the field of aero-engine static radar stealth testing, and relates to a low-scattering casing for an engine used for electromagnetic testing in an external wind environment. Background technique [0002] Modern military operations have gradually shifted from direct firepower confrontation to electronic information operations, and precise target strikes have been achieved through long-distance electromagnetic wave signal detection. has become an irreversible trend. Among them, the engine, as one of the most important scattering sources, is the key to determine the stealth performance of the aircraft, and has become an important content of military stealth engine research in various countries. [0003] Although the external field electromagnetic test has high test cost and is greatly affected by the environmental climate (wind environment), its superior far-field conditions also make the external field electromagnetic test a dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02G01S7/40
CPCG01S7/02G01S7/4004G01S7/40
Inventor 卢婷李晓明李岳锋冯松涛李恒邓雪姣
Owner AECC SICHUAN GAS TURBINE RES INST
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