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Jet pipe capable of reducing features of infrared signals and radar signals

A radar signal and nozzle technology, applied in the direction of jet propulsion devices, machines/engines, etc., can solve the problems of binary stealth nozzle with large aerodynamic loss, shorten the overall length of the tube body, reduce infrared and radar signal characteristics, reduce The effect of aerodynamic losses

Active Publication Date: 2015-12-02
AECC SHENYANG ENGINE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a nozzle that can reduce the characteristics of infrared and radar signals, so as to solve the problem of large aerodynamic loss of the existing binary stealth nozzle

Method used

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  • Jet pipe capable of reducing features of infrared signals and radar signals
  • Jet pipe capable of reducing features of infrared signals and radar signals
  • Jet pipe capable of reducing features of infrared signals and radar signals

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Embodiment Construction

[0038] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated.

[0039] Such as Figure 1 to Figure 8 As shown, the present invention provides a nozzle capable of reducing infrared and radar signatures, including a full-moon-half-moon section section 1, a half-moon-meniscus-half-moon section section 2, and a half-moon section outlet section 3 connected in sequence.

[0040] The full moon-half moon section section 1 is in the shape of a tube body, and its inlet end face ( figure 2 The left end face in ) is the first cross-section 11 of the nozzle inlet, and the first cross-section 11 is a circular cross-section. The full moon-half-moon section section 1 can be designed as a variety of suitable shapes as required. In the present em...

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Abstract

The invention relates to the field of structural design of aero-engine jet pipes, in particular to a jet pipe capable of reducing features of infrared signals and radar signals, and aims at solving the problem that the pneumatic loss of an existing binary hidden jet pipe is large. The jet pipe comprises three barrel segments, namely, a circular-semicircular section segment, a semicircular-crescent-semicircular section segment and a semicircular section outlet segment which are connected in sequence. A conical protrusion is arranged on the inner wall of the bottom of the semicircular-crescent-semicircular section segment, and used for covering a high-temperature component in an engine, and the outer surface, exposed to the interior of the semicircular-crescent-semicircular section segment, of the conical protrusion is arranged to be streamline. According to the jet pipe capable of reducing the features of the infrared signals and the radar signals, the pneumatic loss of the jet pipe can be reduced, meanwhile the conical protrusion can completely cover the high-temperature component in the engine, the features of the infrared signals and the radar signals of an engine exhaust system can be greatly reduced, and an aircraft can be helped to meet the control requirement for the low features of the infrared signals and the radar signals.

Description

technical field [0001] The invention relates to the structural design field of an aero-engine nozzle, in particular to a nozzle capable of reducing infrared and radar signal characteristics. Background technique [0002] Most of the nozzles of existing aero-engines are axisymmetric nozzles and ordinary binary nozzles. This type of nozzles is not effective in shielding the high-temperature wall inside the engine, and its infrared stealth and radar stealth effects are poor. At the same time, this type of nozzle cannot meet the requirements of the aircraft for the stealth performance of the engine. In order to solve the above problems, an S-curved binary stealth nozzle appeared. [0003] However, in order to realize the infrared stealth of the engine, the S-curved binary stealth nozzle requires a long nozzle length and a large height difference between the inlet and outlet axes, resulting in large aerodynamic losses. Contents of the invention [0004] The purpose of the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K1/78F02K1/82
Inventor 邓洪伟
Owner AECC SHENYANG ENGINE RES INST
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