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Low-scattering shell for binary vector engine and application of low-scattering shell

A vector engine and low-scattering technology, applied to radio wave measurement systems, instruments, etc., can solve the problems of low electromagnetic signal level, poor forward and side suppression effect, and inability to accurately and effectively obtain weak forward signal data

Active Publication Date: 2021-11-23
AECC SICHUAN GAS TURBINE RES INST
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Problems solved by technology

The low-scattering shells designed for aero-engine electromagnetic testing at this stage have poor forward and side suppression effects, while the electromagnetic signals generated by creeping waves and diffraction are of low magnitude, which are concealed by the forward electromagnetic scattering signals of the low-scattering shells. It is impossible to accurately and effectively obtain the forward weak signal data generated by exposed components such as external regulators
[0004] At present, the electromagnetic test of aero-engine can only obtain the radar scattering characteristics in its backward azimuth, and the contribution to the forward radar scattering of the aircraft is covered by the signal of the low-scattering shell itself, so it is impossible to effectively analyze the creeping wave and diffracted wave of the external regulator of the aero-engine. Phenomenon

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  • Low-scattering shell for binary vector engine and application of low-scattering shell

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Embodiment Construction

[0027] Embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings.

[0028] Embodiments of the present disclosure are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. The present disclosure can also be implemented or applied through different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, a...

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Abstract

The invention provides a low-scattering shell for a binary vector engine and application of the low-scattering shell, the low-scattering shell comprises a flat mouse-shaped structure defined by a plane bottom, a conical side wall and an arc-surface top, the low-scattering shell comprises a front section and a rear section, a notch part is formed in the tail part of the rear section, and the size of the notch part is matched with the size of a to-be-tested binary vector engine jet pipe test mounting part. According to the method, the radar scattering cross section of the inner region of the backward cavity of an aero-engine can be independently obtained, and meanwhile, the influence of creeping waves and diffracted waves of an outer adjusting sheet of the aero-engine on forward radar scattering of an aircraft can be obtained.

Description

technical field [0001] The present disclosure relates to the technical field of aero-engine stealth design, in particular to a low-scattering casing for a binary vector engine and its application. Background technique [0002] In the stealth design of aero-engines, electromagnetic testing is a direct means to obtain radar cross section. In conventional electromagnetic tests, in order to obtain the radar scattering cross-section in the inner domain of the aero-engine cavity, it is generally wrapped with a low-scattering shell to effectively suppress the radar scattering signals generated by the external wall, pipeline and installation edge, which is an important way to improve the aero-engine One of the necessary devices for engine backward electromagnetic testing accuracy. [0003] Through the accumulation of the stealth design foundation of the aero-engine in the early stage, the design method of the low-scattering shell has been fully mastered, and its radar cross-section...

Claims

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 黄维娜李晓明李岳锋马健李恒卢婷廖华琳王国洪邓雪姣
Owner AECC SICHUAN GAS TURBINE RES INST
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