CN218991737U - Self-adaptive wave-absorbing fluid device for aeroengine - Google Patents
Self-adaptive wave-absorbing fluid device for aeroengine Download PDFInfo
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- CN218991737U CN218991737U CN202223361132.6U CN202223361132U CN218991737U CN 218991737 U CN218991737 U CN 218991737U CN 202223361132 U CN202223361132 U CN 202223361132U CN 218991737 U CN218991737 U CN 218991737U
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Abstract
The utility model discloses a self-adaptive wave-absorbing fluid device for an aeroengine, which comprises a casing made of wave-absorbing composite materials, a wave-absorbing inner ring concentrically arranged with the casing, a plurality of adjustable wave-absorbing blades distributed along the circumferential direction of the casing, a conical fairing arranged at the front edge of the wave-absorbing inner ring and an actuating mechanism, wherein the adjustable wave-absorbing blades comprise the front edge of the adjustable wave-absorbing blades made of metal materials and the rear part of the adjustable wave-absorbing blades made of the wave-absorbing composite materials, the front edge of the adjustable wave-absorbing blades is fixedly arranged between the casing and the wave-absorbing inner ring, the rear part of the adjustable wave-absorbing blades is movably arranged between the casing and the wave-absorbing inner ring, and the actuating mechanism is used for adjusting the angle between the rear part of the adjustable wave-absorbing blades and incoming flows. The self-adaptive wave-absorbing fluid-guiding device for the aero-engine realizes the dual functions of the adjustment of the inlet airflow and the wave-absorbing efficiency adjustment of the aero-engine, reduces the complexity of the aero-engine system and improves the working reliability of the aero-engine system.
Description
Technical Field
The utility model relates to the technical field of aero-engine design, in particular to a self-adaptive wave-absorbing and guiding fluid device for an aero-engine.
Background
The inlet of the aeroengine is generally provided with guide vanes for adjusting air flow, and at the same time, in order to reduce the radar scattering cross section and ensure the stealth performance of the aircraft, a wave absorbing fluid for absorbing radar electromagnetic waves is generally arranged at the rear part of the air inlet channel and a distance in front of the inlet of the engine. However, the installation of the suction waveguide fluid increases the complexity of the aero-engine system, reducing the operational reliability of the engine system. In addition, the working state of the wave-absorbing fluid is passively not adjustable, and the wave-absorbing efficiency cannot be adjusted.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a self-adaptive wave-absorbing fluid device for an aero-engine, which can realize the dual functions of the adjustment of the inlet airflow of the aero-engine and the adjustment of the wave-absorbing efficiency.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a self-adaptation wave-absorbing waveguide fluid device for aeroengine, its includes the receiver that adopts the wave-absorbing composite material to make, one with the wave-absorbing inner ring that the receiver set up concentrically, a plurality of adjustable wave-absorbing blades that distribute along the circumference of receiver and one set up in the conical radome of wave-absorbing inner ring leading edge, adjustable wave-absorbing blade is including the adjustable wave-absorbing blade leading edge that adopts the metal material to make and the adjustable wave-absorbing blade rear portion that adopts the wave-absorbing composite material to make, and adjustable wave-absorbing blade leading edge is fixed to be set up between receiver and wave-absorbing inner ring, and adjustable wave-absorbing blade rear portion activity sets up between receiver and wave-absorbing inner ring, a self-adaptation wave-absorbing waveguide fluid device for aeroengine still includes the actuating mechanism that is used for adjusting adjustable wave-absorbing blade rear portion and incoming flow's angle.
Preferably, a rotating shaft is arranged at one end, connected with the wave-absorbing inner ring, of the rear part of the adjustable wave-absorbing blade, a plurality of rotating shaft jacks distributed along the circumferential direction are arranged at the outer side of the wave-absorbing inner ring, and the actuating mechanism drives the rotating shaft to rotate so as to adjust the angle between the rear part of the adjustable wave-absorbing blade and incoming flow.
Preferably, the conical fairing head is provided with a plurality of deicing slits.
Preferably, the front edge of the adjustable wave-absorbing blade is provided with a plurality of deicing slits.
The beneficial technical effects of the utility model are as follows: according to the self-adaptive wave-absorbing fluid device for the aero-engine, the angle between the rear part of the adjustable wave-absorbing blade and incoming flow can be adjusted through the actuating mechanism, so that the dual functions of adjusting air flow at the inlet of the aero-engine and adjusting wave-absorbing efficiency are realized.
Drawings
FIG. 1 is a schematic diagram of an adaptive waveguide fluid suction device according to the present utility model;
FIG. 2 is a schematic view of the structure of an adjustable absorbing vane according to the present utility model;
FIG. 3 is a schematic view of the conical fairing of the present utility model;
fig. 4 is a schematic view of the assembly of the adaptive suction waveguide fluid device of the present utility model on an aircraft engine.
Detailed Description
The present utility model will be further described with reference to the drawings and examples below in order to more clearly understand the objects, technical solutions and advantages of the present utility model to those skilled in the art.
As shown in fig. 1-2, in one embodiment of the present utility model, the adaptive wave-absorbing fluid device includes a casing 10, an inner wave-absorbing ring 20 concentrically disposed with the casing 10, a plurality of adjustable wave-absorbing blades 30 circumferentially distributed along the casing 10, a conical fairing 40 disposed at the front edge of the inner wave-absorbing ring 20, and an actuating mechanism.
The conical fairing 40 is made of metal material, and the conical fairing 40 made of metal material can prevent bird strike or sand damage. The adjustable wave-absorbing blade 30 comprises an adjustable wave-absorbing blade front edge 31 and an adjustable wave-absorbing blade rear portion 32; the front edge 31 of the adjustable wave-absorbing blade is fixedly arranged between the casing 10 and the wave-absorbing inner ring 20 in a welding or bolting mode, the front edge 31 of the adjustable wave-absorbing blade is made of a metal material, and the front edge 31 of the adjustable wave-absorbing blade made of the metal material can prevent bird strike, sand damage and the like; the adjustable wave-absorbing blade rear part 32 is movably arranged between the casing 10 and the wave-absorbing inner ring 20, the adjustable wave-absorbing blade rear part 32 is positioned at the rear side of the front edge 31 of the adjustable wave-absorbing blade, and the adjustable wave-absorbing blade rear part 32 is made of wave-absorbing composite materials and can absorb electromagnetic waves incident into an air inlet channel of an aeroengine. The rear part 32 of the adjustable wave absorbing blade can be driven by the actuating mechanism to adjust the angle with incoming flow, so that on one hand, the inlet air flow of the aeroengine is adjusted, and on the other hand, the wave absorbing efficiency can be adaptively adjusted according to the plan.
As shown in fig. 4, the adaptive wave-absorbing fluid device is installed at the forefront end of the aero-engine 50, the air flow flows into the aero-engine compressor through the adaptive wave-absorbing fluid device, the incident electromagnetic wave is absorbed and attenuated by the rear part 32 of the adjustable wave-absorbing blade, the electromagnetic scattering intensity is reduced, when the electromagnetic scattering intensity needs to be better reduced, the electromagnetic wave can be better absorbed and attenuated by adjusting the angle between the rear part 32 of the adjustable wave-absorbing blade and the incoming flow, and meanwhile, the adjustment of the inlet air flow of the aero-engine can be realized by adjusting the angle between the rear part 32 of the adjustable wave-absorbing blade and the incoming flow.
In a preferred embodiment of the present utility model, as shown in fig. 2, a rotating shaft 33 is disposed at an end of the rear portion 32 of the adjustable wave-absorbing blade, which is connected to the wave-absorbing inner ring 20, and a plurality of rotating shaft insertion holes distributed along the circumferential direction are disposed at the outer side of the wave-absorbing inner ring 20, and the rotating shaft 33 is inserted into the rotating shaft insertion holes, so that the rear portion 32 of the adjustable wave-absorbing blade is connected to the wave-absorbing inner ring 20. The actuating mechanism drives the rotating shaft 33 to rotate, so that the rear part 32 of the adjustable wave-absorbing blade is driven to rotate around the rotating shaft 33, and the angle between the rear part 32 of the adjustable wave-absorbing blade and incoming flow is adjusted.
In a preferred embodiment of the present utility model, as shown in fig. 2, the front edge 31 of the adjustable wave-absorbing blade is provided with a plurality of deicing slits 34, and the high temperature air flow from the compressor of the aero-engine flows out of the deicing slits 34, thereby preventing the adjustable wave-absorbing blade 30 from icing.
In a preferred embodiment of the present utility model, as shown in fig. 3, the head of the conical fairing 40 is provided with a plurality of deicing slits 41, and the high temperature air flow from the compressor of the aeroengine flows out of the deicing slits 41 to prevent the conical fairing 40 from icing.
In a preferred embodiment of the present utility model, the casing 10 is made of a wave-absorbing composite material, so as to further reduce electromagnetic wave scattering from the air inlet.
The foregoing is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Various equivalent changes and modifications can be made by those skilled in the art based on the above embodiments, and all equivalent changes or modifications made within the scope of the claims shall fall within the scope of the present utility model.
Claims (4)
1. An adaptive waveguide fluid absorbing device for an aircraft engine, characterized by: the self-adaptive wave-absorbing waveguide fluid device for the aeroengine comprises a casing made of wave-absorbing composite materials, a wave-absorbing inner ring concentrically arranged with the casing, a plurality of adjustable wave-absorbing blades distributed along the circumferential direction of the casing and a conical fairing arranged at the front edge of the wave-absorbing inner ring, wherein the adjustable wave-absorbing blades comprise adjustable wave-absorbing blade front edges made of metal materials and adjustable wave-absorbing blade rear parts made of wave-absorbing composite materials, the front edges of the adjustable wave-absorbing blades are fixedly arranged between the casing and the wave-absorbing inner ring, the rear parts of the adjustable wave-absorbing blades are movably arranged between the casing and the wave-absorbing inner ring, and the self-adaptive wave-absorbing waveguide fluid device for the aeroengine further comprises an actuating mechanism for adjusting the angles between the rear parts of the adjustable wave-absorbing blades and incoming flows.
2. An adaptive suction waveguide fluid device for an aircraft engine according to claim 1, wherein: the adjustable wave absorbing blade is characterized in that a rotating shaft is arranged at one end, connected with the wave absorbing inner ring, of the rear portion of the adjustable wave absorbing blade, a plurality of rotating shaft jacks distributed along the circumferential direction are arranged on the outer side of the wave absorbing inner ring, and the actuating mechanism drives the rotating shaft to rotate so as to adjust the angle between the rear portion of the adjustable wave absorbing blade and incoming flow.
3. An adaptive suction waveguide fluid device for an aircraft engine according to claim 2, wherein: the conical fairing head is provided with a plurality of deicing slits.
4. An adaptive suction waveguide fluid device for an aircraft engine according to claim 3, wherein: the front edge of the adjustable wave-absorbing blade is provided with a plurality of deicing slits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223361132.6U CN218991737U (en) | 2022-12-13 | 2022-12-13 | Self-adaptive wave-absorbing fluid device for aeroengine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223361132.6U CN218991737U (en) | 2022-12-13 | 2022-12-13 | Self-adaptive wave-absorbing fluid device for aeroengine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218991737U true CN218991737U (en) | 2023-05-09 |
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ID=86195063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223361132.6U Active CN218991737U (en) | 2022-12-13 | 2022-12-13 | Self-adaptive wave-absorbing fluid device for aeroengine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218991737U (en) |
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2022
- 2022-12-13 CN CN202223361132.6U patent/CN218991737U/en active Active
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