CN102777261A - Base plate used for inlet ventilation door and inlet ventilation door including it - Google Patents
Base plate used for inlet ventilation door and inlet ventilation door including it Download PDFInfo
- Publication number
- CN102777261A CN102777261A CN2011101246109A CN201110124610A CN102777261A CN 102777261 A CN102777261 A CN 102777261A CN 2011101246109 A CN2011101246109 A CN 2011101246109A CN 201110124610 A CN201110124610 A CN 201110124610A CN 102777261 A CN102777261 A CN 102777261A
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- CN
- China
- Prior art keywords
- inlet flap
- substrate
- apu
- wallboard
- ventilation door
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
- F02C7/045—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for noise suppression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/20—Three-dimensional
- F05D2250/28—Three-dimensional patterned
- F05D2250/283—Three-dimensional patterned honeycomb
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Building Environments (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention provides a base plate used for an APU (auxiliary power unit) inlet ventilation door. The base plate has two opposite surfaces and a honeycomb structure positioned between the two surfaces. The honeycomb structure has a plurality of miniature chambers. One of the two surfaces is provided with a plurality of silencing holes respectively communicated with the miniature chambers. The invention also provides an APU inlet ventilation door, which comprises the base plate used for the inlet ventilation door and a wall plate. The base plate is fixed on the wall plate. And the honeycomb structure is equipped with an opening far away from the wall plate. With the invention, on the basis of not changing the weight and strength of the inlet ventilation door, the noise level of an APU inlet system can be effectively reduced.
Description
Technical field
The present invention relates to the APU inlet flap and use substrate.In addition, the invention still further relates to the APU inlet flap that comprises this substrate.
Background technique
APU (auxiliary power unit) gas handling system mainly is to be used for to APU provides source of the gas for its combustion chambers burn, thereby produces the running of motivational drive APU.The effect of inlet flap mainly is that outside air is got into the APU admission line through the punching press effect, and this aloft punching press effect and effect are more obvious.
APU gas handling system noise is higher, and frequency band is mainly high-frequency noise.In order to change the noise level of aircraft aircraft parking, improve the product competitive ability of civil aircraft, often need noise reduction protective method preferably.What the APU gas handling system noise-reduction method on existing aircraft mainly adopted at present is APU air inlet pipeline silencing apparatus; Yet the noise abatement of this configuration directly depends on the layout of APU air inlet pipeline; Obtain noise reduction preferably, need arrange air inlet pipeline long as far as possible.But this can increase the weight of APU gas handling system, and has increased the pressure loss of pipeline, has influenced the APU performance.Increasing system weight is unacceptable to aircraft, and the weight on the aircraft is to have strict control to require; The pressure loss that has increased pipeline in addition can cause the Effect on Performance to APU.
To the contradiction that produces between APU gas handling system weight and performance requirement and the low noise level requirement of APU system; The present invention proposes on the basis that does not influence APU air inlet configuration, weight, performance and requirement of strength; The APU inlet flap is carried out the sound lining handle reflecting background, thereby further reduce the noise level of APU gas handling system with the minimizing air door.
Summary of the invention
The objective of the invention is to overcome the contradiction of traditional APU gas handling system between noise abatement requirement and gas handling system weight, proposed the APU inlet flap configuration of a kind of lining processing.This configuration is on traditional air door configuration basis; Through perforation being set on the panel of the cellular structure of air door or setting up metal mesh structure; Thereby the cellular structure (intensity and weight are considered) that can utilize traditional air door reduces the reflecting background of air door, further reduces APU gas handling system noise, does not change the further reduction that realizes noise level on system weight and the intensity based thereby be implemented in; Reach the noise objective requirement, improve product competitive ability.
In order to achieve the above object; The present invention provides a kind of inlet flap to use substrate; This substrate has relative two surfaces and the cellular structure between said two surfaces; Said cellular structure has a plurality of miniature chambers, and one of said two surfaces are provided with a plurality of bloops that communicate with said miniature chamber respectively.
The present invention also provides a kind of inlet flap to use substrate; This substrate has relative two surfaces and the cellular structure between said two surfaces; Said cellular structure has a plurality of miniature chambers; One of said two surfaces have metal mesh structure, and said metal mesh structure is provided with a plurality of mesh that communicate with said miniature chamber respectively.
In addition; The present invention also provides a kind of inlet flap, and it comprises wallboard and aforesaid substrate, and said substrate is fixed on the said wallboard; Said cellular structure has the opening away from said wallboard; That is, the surface that is provided with bloop or has metal mesh structure is away from said wallboard, and the cellular structure in the substrate can play the effect of strengthening wallboard.
Wherein, said substrate is provided with the floor that extends along airflow direction, and is respectively equipped with the side plate that extends along airflow direction on the both sides of said wallboard, is used for steering flow and gets into gas handling system.
Wherein, said substrate is fixed on the said wallboard through Bond.Said wallboard is formed by composite material or metallic material.
In addition, the present invention also provides a kind of inlet flap, and it is formed with substrate by above-mentioned inlet flap.
Beneficial effect of the present invention:
Adopting the APU gas handling system of this configuration, near I haven't seen you for ages makes APU gas handling system noise further reduce 2-3dB, thereby can reduce the overall aircraft noise level; Simultaneously, on the basis that Reasonable Orientation aircraft noise level requires, can reduce system design and manufacture cost.
Description of drawings
Describe in detail according to different preferred embodiments of the present invention below in conjunction with accompanying drawing.
Fig. 1 is the front elevation of inlet flap according to the present invention with the part of substrate;
Fig. 2 is the sectional view of inlet flap according to the present invention with the part of substrate;
Fig. 3 is the stereogram according to a preferred embodiment of inlet flap of the present invention;
Fig. 4 is that it has the inlet flap shown in Fig. 3 according to the stereogram of inlet flap of the present invention system;
Fig. 5 is the stereogram according to another preferred embodiment of inlet flap of the present invention;
Fig. 6 is that it has the inlet flap shown in Fig. 5 according to the stereogram of inlet flap of the present invention system;
Fig. 7 is the noise reduction schematic diagram according to inlet flap of the present invention.
Embodiment
As depicted in figs. 1 and 2, it shows the preferred embodiment of inlet flap of the present invention with substrate.Inlet flap of the present invention can adopt metallic material or composite material to process with substrate 10; It has relative two surfaces or panel 11,12, and the cellular structure 13 on two surfaces 11, between 12, and this cellular structure has a plurality of miniature chambers 14; Wherein surface 12 is provided with a plurality of bloops 15; Bloop 15 communicates with the miniature chamber 14 of cellular structure 13 respectively, and preferably, the number of bloop 15 is identical with the number of miniature chamber 14; That is, a bloop 15 communicates with a miniature chamber 14.The effect of smooth flow of gas can be played in surface 12, avoids causing the influence of 13 pairs of air velocity distributions of cellular structure.
In the embodiment shown in fig. 1, bloop 15 big or small identical, and arrange that evenly the distance between the adjacent hole is identical.But in other embodiments, according to concrete situation, the size of bloop 15 can be inequality, and the distance between the adjacent hole also can be inequality.In addition, the shape in hole also can be inequality, can be circular, oval-shaped or other shape.
In a unshowned embodiment, the surface 12 has metal mesh structure, and this metal mesh structure has a plurality of mesh, this mesh respectively with cellular structure 13 on miniature chamber 14 communicate.Preferably, the number of mesh is identical with the number of miniature chamber 14, that is, a mesh communicates with a miniature chamber 14.
Like Fig. 3 and shown in Figure 4, it shows a preferred embodiment of inlet flap 20 of the present invention, and the gas handling system 30 that comprises this inlet flap 20.Inlet flap 20 comprises wallboard 21 and substrate 22.Wallboard 21 can be made up of the thin-walled solid material that known composite material or Structural Hardware are formed.Substrate 22 is fixed on the wallboard 21 through Bond or other known way.Wherein, substrate 22 has the structure identical with substrate 10, and the surface that is provided with bloop (metal mesh structure) is away from wallboard 21, and the cellular structure in the substrate can play the effect of strengthening wallboard.Be respectively equipped with the side plate 23 that extends along airflow direction on the both sides of wallboard 21, and/or can be provided with one or more floors 24 that extend along airflow direction on the substrate 22, mainly play the effect that support or steering flow get into the pipeline of APU gas handling system smoothly.
Like Fig. 5 and shown in Figure 6, it shows a preferred embodiment of inlet flap 40 of the present invention, and the gas handling system 50 that comprises this inlet flap 40.Inlet flap 40 comprises two side plates 41,42 and upper plate 43, intermediate plate 44 and lower plate 45, and these plates can combine through any known mode.When being installed in 50 last times of gas handling system, close gas handling system 50 through rotation inlet flap 40.Among the embodiment shown in the figure, upper plate 43, intermediate plate 44 adopt with inlet flap with the identical structure of substrate 10, certain lower plate 45 also can adopt identical structure.
The present invention makes whole inlet flap become lining structure through the setting of cellular structure and bloop, has both played the effect of strengthening air door, has increased the function of noise reduction again.In the process of implementing, through each frequency band of reasonable distribution pipeline silencing apparatus and air door silencing apparatus, eliminate the most reasonably noise with the cellular structure thickness of minimum then, can be so that the air door configuration after handling be brought into play maximum advantage aspect noise elimination.
As shown in Figure 7, it shows noise reduction principle of the present invention.When APU gas handling system noise incided the APU inlet flap 20 that sound lining handled, a part of noise can be resonated through cavity by the lining structure of APU inlet flap 20 and consume, thereby makes APU gas handling system noise level further reduce.Confirm for the punching rate of bloop or metal mesh structure mesh and the size of piercing aperture; Need hole pitch, aperture rationally be set and select cellular structure thickness according to the acoustic characteristics of Helmholtz resonant cavity or the characteristic of quarter wavelength theory and sound source; So that the frequency of noise elimination and the desired frequency of Helmholtz or quarter-wave long tube are consistent, thereby reach the purpose that reduces noise.
In sum, can utilize the cellular structure that has been present in the inlet flap structure to play the noise elimination purpose when cellular structure panel is set to perforation structure or metal mesh structure, thereby reduce noise.It should be noted that the configuration, size and the position that in design process, need rationally to settle bloop, to prevent having hydrops in the cellular structure.
Traditional air door configuration adopted cellular structure under the situation of proof strength alleviating air door weight, but never considered the function of noise elimination aspect; And the present invention has utilized the cellular structure of traditional throttle structure to have the function of noise reduction aspect, thereby makes traditional air door configuration not only have silencing function but also can guarantee the advantage of light weight through the bonding panel of change cellular structure.
Specific embodiment described in the present invention is merely preferred embodiment of the present invention, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of claim of the present invention change and modification, all belong to protection scope of the present invention.
Claims (8)
1. an inlet flap is used substrate; It is characterized in that; This substrate has relative two surfaces and the cellular structure between said two surfaces, and said cellular structure has a plurality of miniature chambers, and one of said two surfaces are provided with a plurality of bloops that communicate with said miniature chamber respectively.
2. an inlet flap is used substrate; It is characterized in that; This substrate has relative two surfaces and the cellular structure between said two surfaces; Said cellular structure has a plurality of miniature chambers, and one of said two surfaces have metal mesh structure, and said metal mesh structure is provided with a plurality of mesh that communicate with said miniature chamber respectively.
3. an inlet flap is characterized in that, it comprises that wallboard and inlet flap according to claim 1 and 2 use substrate, and said substrate is fixed on the said wallboard, and the surface that is provided with bloop or has a metal mesh structure is away from said wallboard.
4. inlet flap according to claim 3 is characterized in that, said substrate is provided with the floor that extends along airflow direction, is used for steering flow and gets into gas handling system.
5. inlet flap according to claim 3 is characterized in that, is respectively equipped with the side plate that extends along airflow direction on the both sides of said wallboard, is used for steering flow and gets into gas handling system.
6. inlet flap according to claim 3 is characterized in that said substrate is fixed on the said wallboard through Bond.
7. inlet flap according to claim 3 is characterized in that said wallboard is formed by composite material or metallic material.
8. an inlet flap is characterized in that, it is formed with substrate by inlet flap according to claim 1 and 2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110124610.9A CN102777261B (en) | 2011-05-13 | 2011-05-13 | Inlet flap substrate and comprise the inlet flap of this substrate |
| PCT/CN2011/085062 WO2012155521A1 (en) | 2011-05-13 | 2011-12-30 | Substrate for air intake throttle and air intake throttle comprising the substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110124610.9A CN102777261B (en) | 2011-05-13 | 2011-05-13 | Inlet flap substrate and comprise the inlet flap of this substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102777261A true CN102777261A (en) | 2012-11-14 |
| CN102777261B CN102777261B (en) | 2016-02-10 |
Family
ID=47122333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110124610.9A Active CN102777261B (en) | 2011-05-13 | 2011-05-13 | Inlet flap substrate and comprise the inlet flap of this substrate |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102777261B (en) |
| WO (1) | WO2012155521A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2829475A1 (en) * | 2013-07-26 | 2015-01-28 | The Boeing Company | Auxiliary power unit inlet apparatus and method |
| US20150115099A1 (en) * | 2013-10-25 | 2015-04-30 | Honeywell International Inc. | Auxiliary power unit inlet door having openings formed therein |
| CN105201653A (en) * | 2015-09-10 | 2015-12-30 | 中国商用飞机有限责任公司 | Actuating mechanism of an air suction valve of an auxiliary power device air suction system |
| CN107893778A (en) * | 2017-10-16 | 2018-04-10 | 中国商用飞机有限责任公司 | A kind of fan inlet inlet device |
| CN108725807A (en) * | 2017-04-25 | 2018-11-02 | 空中客车运营简化股份公司 | acoustic treatment panel and aircraft |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3038293B1 (en) | 2015-07-02 | 2017-07-21 | Nass & Wind Ind | FLOATING PLATFORM FOR SUPPORTING A WIND TURBINE AND A WIND TOWER COMPRISING A TOWER ASSEMBLED TO THE PLATFORM |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3821999A (en) * | 1972-09-05 | 1974-07-02 | Mc Donnell Douglas Corp | Acoustic liner |
| GB2296306A (en) * | 1994-12-05 | 1996-06-26 | Short Brothers Plc | Reducing drag by boundary layer control |
| US6439340B1 (en) * | 2000-11-17 | 2002-08-27 | Astech Manufacturing, Inc. | Acoustically treated structurally reinforced sound absorbing panel |
| CN101675226A (en) * | 2007-04-30 | 2010-03-17 | 法国空中巴士公司 | The acoustical panel that the noise reduction characteristic is variable |
| CN101939222A (en) * | 2008-02-04 | 2011-01-05 | 空中客车营运有限公司 | Be used to be installed in the engine charge valve on the housing of admission port of aero-engine and have the driving engine and the aircraft system of this engine charge valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4828932A (en) * | 1986-05-12 | 1989-05-09 | Unix Corporation Ltd. | Porous metallic material, porous structural material and porous decorative sound absorbing material, and methods for manufacturing the same |
| US7540354B2 (en) * | 2006-05-26 | 2009-06-02 | United Technologies Corporation | Micro-perforated acoustic liner |
-
2011
- 2011-05-13 CN CN201110124610.9A patent/CN102777261B/en active Active
- 2011-12-30 WO PCT/CN2011/085062 patent/WO2012155521A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3821999A (en) * | 1972-09-05 | 1974-07-02 | Mc Donnell Douglas Corp | Acoustic liner |
| GB2296306A (en) * | 1994-12-05 | 1996-06-26 | Short Brothers Plc | Reducing drag by boundary layer control |
| US6439340B1 (en) * | 2000-11-17 | 2002-08-27 | Astech Manufacturing, Inc. | Acoustically treated structurally reinforced sound absorbing panel |
| CN101675226A (en) * | 2007-04-30 | 2010-03-17 | 法国空中巴士公司 | The acoustical panel that the noise reduction characteristic is variable |
| CN101939222A (en) * | 2008-02-04 | 2011-01-05 | 空中客车营运有限公司 | Be used to be installed in the engine charge valve on the housing of admission port of aero-engine and have the driving engine and the aircraft system of this engine charge valve |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2829475A1 (en) * | 2013-07-26 | 2015-01-28 | The Boeing Company | Auxiliary power unit inlet apparatus and method |
| US9611050B2 (en) | 2013-07-26 | 2017-04-04 | The Boeing Company | Auxiliary power unit inlet apparatus and methods |
| US10569893B2 (en) | 2013-07-26 | 2020-02-25 | The Boeing Company | Auxiliary power unit inlet apparatus and methods |
| US20150115099A1 (en) * | 2013-10-25 | 2015-04-30 | Honeywell International Inc. | Auxiliary power unit inlet door having openings formed therein |
| US9145214B2 (en) * | 2013-10-25 | 2015-09-29 | Honeywell International Inc. | Auxiliary power unit inlet door having openings formed therein |
| CN105201653A (en) * | 2015-09-10 | 2015-12-30 | 中国商用飞机有限责任公司 | Actuating mechanism of an air suction valve of an auxiliary power device air suction system |
| CN105201653B (en) * | 2015-09-10 | 2017-03-29 | 中国商用飞机有限责任公司 | The actuation mechanism of the inlet flap of auxiliary power unit gas handling system |
| CN108725807A (en) * | 2017-04-25 | 2018-11-02 | 空中客车运营简化股份公司 | acoustic treatment panel and aircraft |
| CN107893778A (en) * | 2017-10-16 | 2018-04-10 | 中国商用飞机有限责任公司 | A kind of fan inlet inlet device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012155521A1 (en) | 2012-11-22 |
| CN102777261B (en) | 2016-02-10 |
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