CN102777261B - Base plate for air intake damper and air intake damper comprising same - Google Patents
Base plate for air intake damper and air intake damper comprising same Download PDFInfo
- Publication number
- CN102777261B CN102777261B CN201110124610.9A CN201110124610A CN102777261B CN 102777261 B CN102777261 B CN 102777261B CN 201110124610 A CN201110124610 A CN 201110124610A CN 102777261 B CN102777261 B CN 102777261B
- Authority
- CN
- China
- Prior art keywords
- substrate
- inlet flap
- apu
- wallboard
- cellular structure
- 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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Links
- 239000000758 substrate Substances 0.000 claims description 35
- 210000003850 cellular structure Anatomy 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 230000030279 gene silencing Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000002860 competitive effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- 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 for an APU air inlet air door, which is provided with two opposite surfaces and a honeycomb structure positioned between the two surfaces, wherein the honeycomb structure is provided with a plurality of micro chambers, and one of the two surfaces is provided with a plurality of silencing holes respectively communicated with the micro chambers. The invention also provides an APU air inlet damper, which comprises the base plate and a wall plate for the air inlet damper, wherein the base plate is fixed on the wall plate, and the honeycomb structure is provided with an opening far away from the wall plate. The invention can effectively reduce the noise level of the APU air intake system on the basis of not changing the weight and the strength of the air intake door too much.
Description
Technical field
The present invention relates to APU inlet flap substrate.In addition, the invention still further relates to the APU inlet flap comprising this substrate.
Background technique
APU (auxiliary power unit) gas handling system is mainly used for as APU provides source of the gas for its combustion chambers burn, thus produces the running of motivational drive APU.Outside air is mainly entered APU admission line by punching press effect by the effect of inlet flap, aloft this punching press effect and effect more obvious.
APU intake system noise is higher, and frequency band is mainly high-frequency noise.In order to change the noise level of apron, improving the product competitive ability of civil aircraft, often needing good noise reduction protective method.What the APU gas handling system noise-reduction method at present on existing aircraft mainly adopted is APU air inlet pipeline silencing apparatus, but the noise abatement of this configuration directly depends on the layout of APU air inlet pipeline, obtain good noise reduction, need air inlet pipeline to be arranged long as far as possible.But this can increase the weight of APU gas handling system, and increase the pressure loss of pipeline, have impact on APU performance.Increase system weight is unacceptable concerning aircraft, and the weight on aircraft has strict control overflow; In addition the pressure loss adding pipeline can cause the impact on APU performance.
For the contradiction produced between APU gas handling system weight and performance requirement and the requirement of APU system low noise level, the present invention proposes on the basis not affecting APU air inlet configuration, weight, function and strength requirement, the process of sound lining is carried out with the reflecting background reducing air door to APU inlet flap, thus reduces the noise level of APU gas handling system further.
Summary of the invention
The object of the invention is to overcome the contradiction of traditional APU gas handling system between noise abatement requirement with gas handling system weight, propose the APU inlet flap configuration of a kind of sound lining process.This configuration is on traditional air door configuration basis, by arranging perforation or set up metal mesh structure on the panel of the cellular structure of air door, thus the cellular structure of traditional air door (intensity and weight are considered) can be utilized to reduce the reflecting background of air door, further reduction APU intake system noise, thus realize the further reduction realizing noise level on the basis not changing system weight and intensity, reach noise objective requirement, improve product competitive ability.
In order to achieve the above object, the invention provides a kind of inlet flap substrate, this substrate has two relative surfaces and the cellular structure between described two surfaces, described cellular structure has multiple miniature chamber, and one of described two surfaces are provided with multiple bloop communicated with described miniature chamber respectively.
The present invention also provides a kind of inlet flap substrate, this substrate has two relative surfaces and the cellular structure between described two surfaces, described cellular structure has multiple miniature chamber, one of described two surfaces have metal mesh structure, and described metal mesh structure is provided with multiple mesh communicated with described miniature chamber respectively.
In addition, the present invention also provides a kind of inlet flap, it comprises wallboard and aforesaid substrate, described substrate is fixed on described wallboard, described cellular structure has the opening away from described wallboard, that is, the surface being provided with bloop or having a metal mesh structure is away from described wallboard, and the cellular structure in substrate can play the effect strengthening wallboard.
Wherein, described substrate is provided with the floor extended along airflow direction, and the both sides of described wallboard is respectively equipped with the side plate extended along airflow direction, enters gas handling system for guiding air-flow.
Wherein, described substrate is fixed on described wallboard by Bond.Described 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 by above-mentioned inlet flap substrate.
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 intake system noise reduce 2-3dB further, thus can reduce overall aircraft noise level; Meanwhile, on the basis of Reasonable Orientation aircraft noise level requirement, system and manufacture cost can be reduced.
Accompanying drawing explanation
Describe in detail according to different preferred embodiment of the present invention below in conjunction with accompanying drawing.
Fig. 1 is the front elevation of the local according to inlet flap substrate of the present invention;
Fig. 2 is the sectional view of the local according to inlet flap substrate of the present invention;
Fig. 3 is the stereogram of a preferred embodiment according to inlet flap of the present invention;
Fig. 4 is the stereogram according to inlet flap system of the present invention, and it has the inlet flap shown in Fig. 3;
Fig. 5 is the stereogram of another preferred embodiment according to inlet flap of the present invention;
Fig. 6 is the stereogram according to inlet flap system of the present invention, and it has the inlet flap shown in Fig. 5;
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 illustrates the preferred embodiment of inlet flap substrate of the present invention.Inlet flap substrate 10 of the present invention can adopt metallic material or composite material to make, it has two relative surfaces or panel 11,12, and the cellular structure 13 between two surfaces 11,12, this cellular structure has multiple miniature chamber 14, wherein surface 12 is provided with multiple bloop 15, bloop 15 communicates with the miniature chamber 14 of cellular structure 13 respectively, 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 the impact causing cellular structure 13 on air velocity distribution.
In the embodiment shown in fig. 1, the size of bloop 15 is identical, and is evenly arranged, and the distance between adjacent hole is identical.But in other embodiments, according to concrete situation, the size of bloop 15 can not be identical, and the distance between adjacent hole also can not be identical.In addition, the shape in hole also can not be identical, can be circular, oval or other shape.
In a unshowned embodiment, surface 12 has metal mesh structure, and this metal mesh structure has multiple mesh, and this mesh communicates with the miniature chamber 14 on cellular structure 13 respectively.Preferably, the number of mesh is identical with the number of miniature chamber 14, that is, a mesh communicates with a miniature chamber 14.
As shown in Figure 3 and Figure 4, it illustrates a preferred embodiment of inlet flap 20 of the present invention, and comprise the gas handling system 30 of this inlet flap 20.Inlet flap 20 comprises wallboard 21 and substrate 22.The thin-walled solid material that wallboard 21 can be made up of known composite material or Structural Hardware forms.Substrate 22 is fixed on wallboard 21 by Bond or other known way.Wherein, substrate 22 has the structure identical with substrate 10, is provided with the surface of bloop (metal mesh structure) away from wallboard 21, and the cellular structure in substrate can play the effect strengthening wallboard.The both sides of wallboard 21 are respectively equipped with the side plate 23 extended along airflow direction, and/or substrate 22 can be provided with one or more floor 24 extended along airflow direction, mainly play and support or guide air-flow to enter the effect of the pipeline of APU gas handling system smoothly.
As shown in Figure 5 and Figure 6, it illustrates a preferred embodiment of inlet flap 40 of the present invention, and comprise the gas handling system 50 of 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 combine by any known mode.When being arranged in gas handling system 50, close gas handling system 50 by rotating inlet air door 40.In the embodiments illustrated in the figures, upper plate 43, intermediate plate 44 adopt the structure identical with inlet flap substrate 10, and certain lower plate 45 also can adopt identical structure.
The present invention, by the setting of cellular structure and bloop, makes whole inlet flap become sound lining structure, has both played the effect strengthening air door, has turn increased the function of noise reduction.In the process implemented, by each frequency band of reasonable distribution pipeline silencing apparatus and air door silencing apparatus, then eliminate the most rational noise with minimum cellular structure thickness, can make the air door configuration after processing in noise elimination, play maximum advantage.
As shown in Figure 7, it illustrates noise reduction principle of the present invention.When APU intake system noise incide sound serve as a contrast the APU inlet flap 20 processed time, a part of noise can be consumed by cavity resonance by the sound lining structure of APU inlet flap 20, thus APU intake system noise level is reduced further.Bloop or the punching rate of metal mesh structure mesh and the size of piercing aperture are determined, need according to the acoustic characteristics of Helmholtz resonant cavity or the reasonable providing holes spacing of characteristic, the aperture of quarter wavelength theory and sound source and select cellular structure thickness, consistent with the frequency of the frequency of noise elimination with expectation that make Helmholtz or quarter-wave long tube, thus reach the object reducing noise.
In sum, the cellular structure be present in inlet flap structure when cellular structure panel being set to perforation structure or metal mesh structure, can be utilized to play noise elimination object, thus reduce noise.It should be noted that need in the design process rationally to settle bloop configuration, size and position, to prevent there is hydrops in cellular structure.
Traditional air door configuration have employed cellular structure when proof strength to alleviate air door weight, but never considers the function of noise elimination aspect; And the present invention is the function that the cellular structure that make use of traditional throttle structure has noise reduction aspect just, through changing the bonding panel of cellular structure thus making traditional air door configuration not only have silencing function but also the advantage of minimum weight can be ensured.
Specific embodiment described in the present invention is only preferred embodiment of the present invention, is not used for limiting practical range of the present invention.Namely all equivalences done according to the content of the present patent application the scope of the claims change and modify, and all belong to protection scope of the present invention.
Claims (7)
1. an inlet flap substrate, it is characterized in that, this substrate has two relative surfaces and the cellular structure between described two surfaces, described cellular structure has multiple miniature chamber, one of described two surfaces are provided with multiple bloop communicated with described miniature chamber respectively, and wherein, the miniature chamber that each bloop is corresponding with it communicates, described substrate is provided with the floor extended along airflow direction, enters gas handling system for guiding air-flow.
2. an inlet flap substrate, it is characterized in that, this substrate has two relative surfaces and the cellular structure between described two surfaces, described cellular structure has multiple miniature chamber, one of described two surfaces have metal mesh structure, described metal mesh structure is provided with multiple mesh communicated with described miniature chamber respectively, wherein, the miniature chamber that each mesh is corresponding with it communicates, described substrate is provided with the floor extended along airflow direction, enters gas handling system for guiding air-flow.
3. an inlet flap, is characterized in that, it comprises wallboard and inlet flap substrate according to claim 1 and 2, and described substrate is fixed on described wallboard, and the surface being provided with bloop or having a metal mesh structure is away from described wallboard.
4. inlet flap according to claim 3, is characterized in that, the both sides of described wallboard being respectively equipped with the side plate extended along airflow direction, entering gas handling system for guiding air-flow.
5. inlet flap according to claim 3, is characterized in that, described substrate is fixed on described wallboard by Bond.
6. inlet flap according to claim 3, is characterized in that, described wallboard is formed by composite material or metallic material.
7. an inlet flap, is characterized in that, it is formed by inlet flap substrate 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 | Base plate for air intake damper and air intake damper comprising same |
| 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 | Base plate for air intake damper and air intake damper comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102777261A CN102777261A (en) | 2012-11-14 |
| CN102777261B true 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 | Base plate for air intake damper and air intake damper comprising same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102777261B (en) |
| WO (1) | WO2012155521A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9611050B2 (en) | 2013-07-26 | 2017-04-04 | The Boeing Company | Auxiliary power unit inlet apparatus and methods |
| US9145214B2 (en) * | 2013-10-25 | 2015-09-29 | Honeywell International Inc. | Auxiliary power unit inlet door having openings formed therein |
| 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 |
| CN105201653B (en) * | 2015-09-10 | 2017-03-29 | 中国商用飞机有限责任公司 | Actuating mechanism of air inlet damper of auxiliary power device air inlet system |
| FR3065473B1 (en) * | 2017-04-25 | 2019-04-19 | Airbus Operations | PANEL FOR ACOUSTIC TREATMENT COMPRISING ALVEOLES CONTAINING EACH OF A PLURALITY OF DUCTS |
| CN107893778B (en) * | 2017-10-16 | 2020-02-11 | 中国商用飞机有限责任公司 | Air inlet device of fan |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012155521A1 (en) | 2012-11-22 |
| CN102777261A (en) | 2012-11-14 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |