CN103376210B - The reinforced fairing of a kind of high opening rate, low flow resistance - Google Patents
The reinforced fairing of a kind of high opening rate, low flow resistance Download PDFInfo
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- CN103376210B CN103376210B CN201310299009.2A CN201310299009A CN103376210B CN 103376210 B CN103376210 B CN 103376210B CN 201310299009 A CN201310299009 A CN 201310299009A CN 103376210 B CN103376210 B CN 103376210B
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Abstract
The present invention relates to the reinforced fairing of a kind of high opening rate, low flow resistance, comprise the porous plate being provided with multiple via, the via on described porous plate presses honeycomb fashion arrangement, and the length-diameter ratio of described via is 1-3, the perpendicular spacing of described via
the horizontal spacing of described via
wherein, d is via diameter 8mm-15mm; θ is the angle 40 °-60 ° of via, and β is percentage of open area 25%-35%.The present invention at large discharge, can use under high stagnation temperature environment, reaches good rectification effect reliably and with long-term.
Description
Technical field
The present invention relates to the reinforced fairing of a kind of high opening rate, low flow resistance, can be used for the fairing that flight Mach number is less than the direct-connected and free jet formula pilot system of airbreathing motor of 5, also can be used for the fairing of other similar test equipment.
Background technology
Airbreathing motor is the major impetus device of hypersonic aircraft and missile armament, in recent years, the research of air suction type power technology is competitively carried out in the countries in the world such as the U.S., Russia, the domestic research being also applicable to the airbreathing motor technology of hypersonic flight device at Efforts To Develop.Carrying out ground experiment is break through the effective means of airbreathing motor gordian technique, therefore needs to set up a series of airbreathing motor ground-testing plant, and direct-connected testing table and free jet test platform are wherein important component parts.
Ground-testing plant will simulate the incoming air condition under airbreathing motor state of flight, need to heat air, the classic method of air heat takes chemical combustion and blending to air, this mode first obtains high-temperature fuel gas with a small amount of air and fuel combustion, supplements a large amount of cold airs and partial oxidation more afterwards in high-temperature fuel gas.Because the turbulivity of air-flow after hot and cold air blending is comparatively large, speed is uneven, needs to carry out rectification to mixed gas, to ensure the high temperature air even flow field entering engine, needs to arrange fairing before motor inlet for this reason.
Summary of the invention
Technology of the present invention is dealt with problems and is: provide a kind of high temperature resistant porous fairing technology with high opening rate, low flow resistance, at large discharge (530kg/s), can use reliably and with long-term, reach good rectification effect under high stagnation temperature (1100K) environment.
Technical solution of the present invention is:
A reinforced fairing for high opening rate, low flow resistance, its special character is: comprise the porous plate 1 being provided with multiple via, and the via on described porous plate presses honeycomb fashion arrangement, and the length-diameter ratio of described via is 1-3, the perpendicular spacing of described via
the horizontal spacing of described via
Wherein, d is via diameter 8mm-15mm; θ is the angle 40 °-60 ° of via, and β is percentage of open area 25%-35%.
Also comprise the location being positioned at porous plate 1 side and strengthen sleeve 2, the periphery that sleeve 2 is fixed on porous plate is strengthened in described location.
Also comprise the multiple circumferential ring stiffener 3 and/or radial reinforced rib 4 that are arranged on porous plate lee face, described circumferential ring stiffener 3 is fixed on porous plate, and described radial reinforced rib is fixed between adjacent two circumferential ring stiffeners and circumferential ring stiffener and location are strengthened between sleeve 20.
The length-diameter ratio of above-mentioned via is 1.6.
Preset clearance between above-mentioned radial reinforced rib 4 and porous plate, the distance in gap is 1.5-3 times of via aperture.
The arrangement principle of above-mentioned circumferential ring stiffener 30 and radial reinforced rib 4: meet blockage ratio and be less than 0.5%.
Above-mentioned via diameter d is 10mm, and the angle θ of described via is 60 °.
The present invention compared with prior art tool has the following advantages:
1, the commutation technique of large discharge high temperature air, this fairing by maximum air flow amount reach 530kg/s, gas flow temperature is up to 1100K, air flow field stagnation pressure deviation after fairing is less than 1%, stagnation temperature deviation is less than ± 25K, and velocity field homogeneity is better, and the pressure loss is less than 0.2MPa.
2, long-time large-scale structure robust techniques under high-temperature oxygen-enriched air shock environment, this fairing internal diameter is Φ 1.5m, at lee face cross weld circumference ring stiffener and radial reinforced rib, instantaneous aerodynamic force percussive action when mass flow air starts can be born, long-time reliably working under realizing the highest 1100K high temperature, strengthen the blockage ratio of structure to hole and be less than 0.5%, substantially do not affect rectification effect.
3, fairing compact conformation of the present invention, reliability is high, and processing is simple.
Adopt the cylindrical perforated plate of making circular hole, and in the reinforced fairing technical scheme of porous plate lee face circumferential ring stiffener arranged in a crossed manner and radial reinforced rib and structural design, percentage of open area reaches 30%, little to the disturbance of air-flow, flow resistance is low, can Long-Time Service under large discharge, hot environment.
4, the present invention increases circumferential ring stiffener 3 and radial reinforced rib 4, improving the bulk strength of porous plate simultaneously, also can play the effect compensating rectification.Air-flow through porous plate is divided into multiple uniform region, carries out water conservancy diversion and multidomain treat-ment, make rectification effect better.
5, the present invention chooses the restraining factors of length-diameter ratio: performance (rectification effect, flow resistance), cost, manufacturability, flow resistance, selects suitable length-diameter ratio scope through a large amount of tests.
Accompanying drawing explanation
Fig. 1 is the structural representation of fairing of the present invention;
Fig. 2 is the cut-open view of fairing;
Fig. 3 is the via position view of porous plate of the present invention.
Wherein Reference numeral is: 1-porous plate, and 2-strengthens sleeve in location, 3-circumference ring stiffener, 4-radial reinforced rib.
Embodiment
As shown in Figure 1, the present invention is made up of porous plate 1, location reinforcement sleeve 2, circumferential ring stiffener 3 and radial reinforced rib 4.Opened round through hole on porous plate 1, honeycomb fashion arrangement is pressed in hole, percentage of open area reaches 30%, perforate length-diameter ratio 1.6, air-flow is after porous plate rectification, turbulivity reduces, reach rectification effect, sleeve 2 is strengthened in porous plate peripheral solder location, the installation realizing porous plate and testing equipment is located, can adjusting sleeve barrel structure according to the concrete structure of equipment, circumferential ring stiffener 3 is welded at porous plate lee face interval, also at cross weld radial reinforced rib 4 between circumferential ring stiffener or radial reinforced rib 4 can welded between outermost circumferential ring stiffener and location reinforcing sleeve, the quantity of circumference ring stiffener and radial reinforced rib can correspondingly adjust, preset clearance (1.5-3 in aperture doubly) between reinforcement and porous plate, avoid blocking the gas channel on porous plate.
The perpendicular spacing of via
the horizontal spacing of via
Wherein, d is via diameter 8mm-15mm; θ is the angle 40 °-60 ° of via, and β is percentage of open area 25%-35%.
Embodiment:
Claims (7)
1. the reinforced fairing of a high opening rate, low flow resistance, it is characterized in that: comprise the porous plate (1) being provided with multiple via, via on described porous plate presses honeycomb fashion arrangement, and the length-diameter ratio of described via is 1-3, the perpendicular spacing of described via
the horizontal spacing of described via
Wherein, d is via diameter 8mm-15mm; θ is the angle 40 °-60 ° of via, and β is percentage of open area 25%-35%.
2. the reinforced fairing of high opening rate according to claim 1, low flow resistance, is characterized in that: also comprise the location being positioned at porous plate (1) side and strengthen sleeve (2), the periphery that sleeve (2) is fixed on porous plate is strengthened in described location.
3. the reinforced fairing of high opening rate according to claim 1 and 2, low flow resistance, it is characterized in that: also comprise the multiple circumferential ring stiffener (3) and/or radial reinforced rib (4) that are arranged on porous plate lee face, described circumferential ring stiffener (3) is fixed on porous plate, described radial reinforced rib be fixed between adjacent two circumferential ring stiffeners and circumferential ring stiffener and location strengthen between sleeve (2).
4. the reinforced fairing of high opening rate according to claim 3, low flow resistance, is characterized in that: the length-diameter ratio of described via is 1.6.
5. the reinforced fairing of high opening rate according to claim 4, low flow resistance, is characterized in that: preset clearance between described radial reinforced rib (4) and porous plate, and the distance in gap is 1.5-3 times of via aperture.
6. the reinforced fairing of high opening rate according to claim 3, low flow resistance, is characterized in that: the arrangement principle of described circumferential ring stiffener (3) and radial reinforced rib (4): meet blockage ratio and be less than 0.5%.
7. the reinforced fairing of high opening rate according to claim 6, low flow resistance, is characterized in that: described via diameter d is 10mm, and the angle θ of described via is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310299009.2A CN103376210B (en) | 2013-07-16 | 2013-07-16 | The reinforced fairing of a kind of high opening rate, low flow resistance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310299009.2A CN103376210B (en) | 2013-07-16 | 2013-07-16 | The reinforced fairing of a kind of high opening rate, low flow resistance |
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| CN103376210A CN103376210A (en) | 2013-10-30 |
| CN103376210B true CN103376210B (en) | 2015-10-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111060320A (en) * | 2019-12-24 | 2020-04-24 | 南京航空航天大学 | Porous hinge type intake pressure distortion element |
| CN112253261B (en) * | 2020-09-11 | 2022-10-28 | 北京动力机械研究所 | Split type heat sink cylindrical rectifier for stable combustion of heater |
| CN112240568B (en) * | 2020-09-11 | 2022-10-28 | 北京动力机械研究所 | Water-cooling cylindrical rectifier for stable combustion of heater |
| CN113983546B (en) * | 2021-09-23 | 2024-01-16 | 重庆大学 | Multi-strand small wind beam body adaptive personalized ventilation terminal device |
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| CN2583642Y (en) * | 2002-12-06 | 2003-10-29 | 上海航天动力机械有限公司 | Flow regulating apparatus for gas flow measuring probe unit |
| JP2009287994A (en) * | 2008-05-28 | 2009-12-10 | Hitachi Plant Technologies Ltd | Rectifying device |
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| CN201684432U (en) * | 2010-05-04 | 2010-12-29 | 姚光纯 | Honeycomb ceramic gaseous rectifier |
| JP2011106757A (en) * | 2009-11-18 | 2011-06-02 | Sanpo Denki Kk | Airflow rectifying device and airflow rectifying system |
| CN202141476U (en) * | 2011-05-04 | 2012-02-08 | 中国航空工业集团公司西安飞机设计研究所 | Integrated measuring venturi with filter rectifying device |
| CN203422226U (en) * | 2013-07-16 | 2014-02-05 | 中国航天科技集团公司第六研究院第十一研究所 | High-porosity and low-flow resistance reinforced rectifier device |
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| CN2583642Y (en) * | 2002-12-06 | 2003-10-29 | 上海航天动力机械有限公司 | Flow regulating apparatus for gas flow measuring probe unit |
| JP2009287994A (en) * | 2008-05-28 | 2009-12-10 | Hitachi Plant Technologies Ltd | Rectifying device |
| JP2011106757A (en) * | 2009-11-18 | 2011-06-02 | Sanpo Denki Kk | Airflow rectifying device and airflow rectifying system |
| CN101701837A (en) * | 2009-11-20 | 2010-05-05 | 中国航空工业空气动力研究院 | Air flow meter with high precision and large range |
| CN201684432U (en) * | 2010-05-04 | 2010-12-29 | 姚光纯 | Honeycomb ceramic gaseous rectifier |
| CN202141476U (en) * | 2011-05-04 | 2012-02-08 | 中国航空工业集团公司西安飞机设计研究所 | Integrated measuring venturi with filter rectifying device |
| CN203422226U (en) * | 2013-07-16 | 2014-02-05 | 中国航天科技集团公司第六研究院第十一研究所 | High-porosity and low-flow resistance reinforced rectifier device |
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| 蒋啸 等."风量测量用整流器的试验研究".《中国电机工程学报》.2006,第26卷(第14期),第104-108页. * |
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| CN103376210A (en) | 2013-10-30 |
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