CN103115747A - Large-size composite material air inlet passage measuring rake - Google Patents
Large-size composite material air inlet passage measuring rake Download PDFInfo
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- CN103115747A CN103115747A CN2012105630624A CN201210563062A CN103115747A CN 103115747 A CN103115747 A CN 103115747A CN 2012105630624 A CN2012105630624 A CN 2012105630624A CN 201210563062 A CN201210563062 A CN 201210563062A CN 103115747 A CN103115747 A CN 103115747A
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Abstract
The invention provides a large-size composite material air inlet passage measuring rake. Aims of integrated collection and measurement of measuring parameters of an engine inlet flow field, and simple and fast installation and disassembly are achieved under the demands that rake body weight is greatly reduced, and stiffness and vibration intensity of the measuring rake are met. The technical scheme includes that the large-size composite material air inlet passage measuring rake is characterized in that a skin framework with a U-shaped cross section comprises a front measuring section and a back installation section, the root portion of installation section of the skin framework is connected on an installation seat, a measuring point protective sleeve is arranged on the windward side of measuring section of the skin framework in an equal-ring-surface mode, a measuring element is installed in the measuring point protective sleeve and is outputted to the installation seat through a guide pipe, a damping protective sleeve with a U-shaped cross section is sleeved on the outer side of the skin framework, a gap is arranged between the damping protective sleeve and the skin framework, and the damping protective sleeve is connected on the installation seat.
Description
Technical field
The invention belongs to the aviation utility appliance, relate to a kind of large-sized composite material air intake duct and measure rake.
Background technology
Due to the impact of many factors, make air intake port flow field quality variation in-flight, engine operation stability and hydraulic performance decline even cause the aircraft accidents such as engine surge, flame-out in flight.Therefore, in flight test, need development and be installed into air flue at air intake port/engine intake to measure rake, to measure and to assess flow field quality.
The small size airplane intake is measured the structural design employing all-metal construction of rake at present, and main material is stainless steel, and each harrows additional damping ring between body (circumferentially equal angles distributes 6 or 8 usually).Measure rake according to this kind structural design large scale air intake duct, the design weight of single rake body will reach 7.5 kilograms, exceed Engine Block Test and allow more than 2 times of weight, due to rake body super-long structural, the bobbing of the rake body far-end during work has increased rake body extraneous vibration and stress simultaneously, work safety on the rake body will make a significant impact, vibration stress due to the rake body strengthens in addition, and the rake body increases simultaneously to the acting force of damping ring, and the destruction of damping ring will be the maximum hidden danger of experimental safe; Due to the designing technique restriction, existing measurement rake measurement parameter is single, can not be with required temperature, integrated, the efficient measurement of pressure (stable state, dynamic) of air intake duct flow field quality estimating, increased the development of engine intake gauge head (measuring rake) and quantity has been installed, having made the blockage ratio of engine intake air-flow strengthen; Due to existing design of installing, make rake body output pressure pipeline, light current circuit modified test comparatively loaded down with trivial details, increased intensity and the time of repacking.
Summary of the invention
Goal of the invention: provide a kind of large-sized composite material air intake duct to measure rake, alleviating greatly the rake body weight, satisfying and measure under rake rigidity and oscillation intensity requirement, reach the integrated collection measurement of engine intake flow-field test parameter, install, dismantle simple and easy purpose efficiently.
Technical scheme: a kind of large-sized composite material air intake duct is measured rake, comprising:
xsect is that the covering skeleton of U-shaped comprises anterior measuring section and the construction section at rear portion, covering skeleton construction section root is connected on mount pad, the first-class anchor ring in described covering skeleton measuring section windward side is provided with the measuring point sheath, in described measuring point sheath, measuring sensor is installed, measuring sensor outputs to mount pad by conduit, xsect is that the damping jacket of U-shaped is enclosed within outside covering skeleton construction section, gapped between described damping jacket and covering skeleton, the damping jacket root is connected on mount pad, the head internal face of covering skeleton measuring section is equipped with vibration transducer, covering skeleton construction section internal face is pasted with strain transducer, be filled with rubber composite between covering skeleton inside and covering skeleton and damping jacket.
Beneficial effect: the present invention and all-steel are measured rake and are compared, and bulk strength is constant, are aided with the filling elastomeric material and have higher shock absorption, and bi-material compound obviously alleviates the one-piece construction weight of measuring rake.
Description of drawings
Fig. 1 is that large-sized composite material air intake duct of the present invention is measured the rake structure schematic diagram.
Fig. 2 is that the A of Fig. 1 of the present invention is to view.
Fig. 3 is the B-B face cut-open view of Fig. 1 of the present invention.
Fig. 4 is the C-C face cut-open view of Fig. 1 of the present invention.
Embodiment
The invention provides a kind of large-sized composite material air intake duct and measure rake, as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, comprising:
xsect is that the covering skeleton 2 of U-shaped comprises anterior measuring section and the construction section at rear portion, covering skeleton 2 construction section roots are connected on mount pad 9, the anchor ring position such as described covering skeleton 2 measuring section windward sides is provided with measuring point sheath 5, in described measuring point sheath 5, measuring sensor 7 is installed, measuring sensor 7 outputs to mount pad 9 by conduit 4, xsect is that the damping jacket 8 of U-shaped is enclosed within outside covering skeleton 2 construction sections, gapped between described damping jacket 8 and covering skeleton 2, damping jacket 8 roots are connected on mount pad 9, the head internal face of covering skeleton 2 measuring sections is equipped with vibration transducer 1, covering skeleton 2 construction section internal faces are pasted with strain transducer 6, be filled with rubber composite between covering skeleton 2 inside and covering skeleton 2 and damping jacket 8.
In order to slow down the radial vibration of measuring rake, at damping jacket 8 overcoats, cushion block and rubber blanket are arranged.
Measuring sensor comprises dynamic pressure transducer, steady state pressure gauge head, temperature gauge head, and wherein in order to save cost, dynamic pressure transducer adopts removably to install, and dynamic pressure transducer can be removed after being used to complete.
Covering skeleton of the present invention adopts stainless steel variable cross section " U " type structure, filled rubber is the bearing support body of rake body structure, again to inhale the impact damper that carries vibration damping, rubber/stainless steel composite material consists of two variable cross section streamlined structures, steel covering skeleton and base solder joint extension, the rake seat is installed the cross section and is adopted the compound coating of dual rubber/stainless steel to strengthen, and has strengthened and has measured the rake oscillation intensity.
Measuring 5 integrated measurement points of parameter of the first-class anchor ring layout of rake measuring section, use on each measurement point
Stainless-steel tube is done outer tube, and with steady state pressure, dynamic pressure and integrated being arranged in outer tube of 3 parameters of temperature, this kind metering system is convenient to improve testing efficiency, and the measuring point arrangement has been carried out the wind tunnel calibration test, to guarantee measuring accuracy.Temperature thermopair, dynamic pressure transducer directly are embedded in pipe, and stable state stagnation pressure measuring point arrives the pressure transducer entrance by gas circuit conduit output pressure gas circuit.This kind docking mode is abandoned copper tube output and welding manner in the past, newly improve one's methods easy and simple to handle, save time, laborsaving, have repeatability.Highly eliminated the impact on test result of streaming of rake body leading portion air-flow for the design of the stainless steel outer sleeve pipe of 25mm.Inner strain transducer, the tip inwall layout vibration acceleration sensor pasted of rake body root to enroll in real time and monitoring and analysis to measure rake structure characteristic, guaranteed to measure rake use safety when the installation of rake body is used.
Rake body output gas circuit pipe take external diameter as
Integrated being arranged in of metal tube measure the rake sidewall, and be docked to pressure transducer with the fluoroplastic flexible pipe, socket/contact pin docking is adopted in the output of the light current such as temperature, dynamic pressure, strain, and the one end is fixed on measurement rake sidewall, these 2 kinds of connected mode good leak tightness, docking, easy removal have repeatability.By site test, newly grinding the set-up time of measuring rake is 3 hours/2 person-times (circumferentially installing 8), has obvious convenience with respect to 12 hours/2 person-times of set-up times in the past.
The present invention adopts two variable cross section streamlined structures on structural design, the mount pad place adopts the dual compound thickening design of rubber/stainless steel, thereby measurement rake center of gravity is offset to the mount pad direction, measure the rake far-end relative weight of (near engine center) by reduction, reduced the additional inertial oscillation amplitude that far-end causes because of quality, extended the design length of measuring rake, remove simultaneously the damping ring of traditional measurement rake, be applicable to the measurement of large transport airplane, passenger plane air intake port and large Bypass Ratio Turbofan Engine inlet flow field quality.
The design of novelty the Parameters Integrated Survey Method metering systems such as pressure, temperature, vibration, stress, changed and measured the single pressure survey of rake in the past and arrange, improved and measured rake parameter measurement efficient; Adopt portable test parameter Interface design, effectively reduced the installation of rake body, take-down time, reduce labour intensity, increase work efficiency; In be embedded in the vibration, strain gauge sensors of rake body can Real-Time Monitoring rake body vibration strained situation, guaranteed the safe handling of rake body.
Claims (3)
1. a large-sized composite material air intake duct is measured rake, it is characterized in that, comprising:
xsect is that the load bearing frame of U-shaped comprises anterior measuring section and the construction section at rear portion, load bearing frame construction section root is connected on mount pad, the first-class anchor ring in described load bearing frame measuring section windward side is provided with the measuring point outer tube, in described measuring point outer tube, measuring sensor is installed, measuring sensor outputs to mount pad by conduit, xsect is that the damping jacket of U-shaped is enclosed within outside covering skeleton construction section, gapped between described damping jacket and load bearing frame, the damping jacket root is connected on mount pad, the head internal face of load bearing frame measuring section is equipped with vibration transducer, covering skeleton construction section internal face is pasted with strain transducer, be filled with rubber composite between load bearing frame inside and load bearing frame and damping jacket.
2. device as claimed in claim 1, is characterized in that, also comprises:
At the damping jacket overcoat, cushion block and rubber blanket are arranged.
3. device as claimed in claim 2, is characterized in that, measuring sensor comprises dynamic pressure transducer, steady state pressure gauge head, temperature gauge head, and wherein dynamic pressure transducer adopts removably to install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210563062.4A CN103115747B (en) | 2012-12-21 | 2012-12-21 | Large-size composite material air inlet passage measuring rake |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210563062.4A CN103115747B (en) | 2012-12-21 | 2012-12-21 | Large-size composite material air inlet passage measuring rake |
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| CN103115747A true CN103115747A (en) | 2013-05-22 |
| CN103115747B CN103115747B (en) | 2015-07-08 |
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| CN201210563062.4A Expired - Fee Related CN103115747B (en) | 2012-12-21 | 2012-12-21 | Large-size composite material air inlet passage measuring rake |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764475A (en) * | 2015-03-10 | 2015-07-08 | 中国船舶重工集团公司第七�三研究所 | Measurement probe rotating mechanism |
| CN107264832A (en) * | 2017-04-20 | 2017-10-20 | 中国商用飞机有限责任公司 | Surface pressure measuring device and method for aircraft slat skin |
| CN108001709A (en) * | 2017-11-06 | 2018-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of aircraft secondary power systems air inlet measuring device |
| CN108709576A (en) * | 2018-06-05 | 2018-10-26 | 中国航发沈阳发动机研究所 | A kind of rake instrument |
| CN108731907A (en) * | 2018-09-05 | 2018-11-02 | 西安远方航空技术发展有限公司 | A kind of duplex measurement rake |
| CN109341775A (en) * | 2018-11-12 | 2019-02-15 | 中国飞行试验研究院 | A kind of anti-big overload air intake duct combined distortion measurement rake |
| CN111551339A (en) * | 2020-04-28 | 2020-08-18 | 中国空气动力研究与发展中心高速空气动力研究所 | Design method of special pressure measuring rake for deformed flow channel of wing-body fusion aircraft ventilation model |
| CN112729839A (en) * | 2020-12-15 | 2021-04-30 | 北京动力机械研究所 | Combustion measurement structure under large gas flow using condition |
| CN115255819A (en) * | 2022-07-13 | 2022-11-01 | 西安远方航空技术发展有限公司 | Measuring rake forming processing method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764475A (en) * | 2015-03-10 | 2015-07-08 | 中国船舶重工集团公司第七�三研究所 | Measurement probe rotating mechanism |
| CN107264832A (en) * | 2017-04-20 | 2017-10-20 | 中国商用飞机有限责任公司 | Surface pressure measuring device and method for aircraft slat skin |
| CN108001709A (en) * | 2017-11-06 | 2018-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of aircraft secondary power systems air inlet measuring device |
| CN108709576B (en) * | 2018-06-05 | 2021-10-01 | 中国航发沈阳发动机研究所 | Harrow type instrument test structure |
| CN108709576A (en) * | 2018-06-05 | 2018-10-26 | 中国航发沈阳发动机研究所 | A kind of rake instrument |
| CN108731907A (en) * | 2018-09-05 | 2018-11-02 | 西安远方航空技术发展有限公司 | A kind of duplex measurement rake |
| CN108731907B (en) * | 2018-09-05 | 2024-02-27 | 西安远方航空技术发展有限公司 | Composite measuring rake |
| CN109341775A (en) * | 2018-11-12 | 2019-02-15 | 中国飞行试验研究院 | A kind of anti-big overload air intake duct combined distortion measurement rake |
| CN111551339A (en) * | 2020-04-28 | 2020-08-18 | 中国空气动力研究与发展中心高速空气动力研究所 | Design method of special pressure measuring rake for deformed flow channel of wing-body fusion aircraft ventilation model |
| CN111551339B (en) * | 2020-04-28 | 2021-10-08 | 中国空气动力研究与发展中心高速空气动力研究所 | Design method of special pressure measuring rake for deformed flow channel of wing-body fusion aircraft ventilation model |
| CN112729839B (en) * | 2020-12-15 | 2022-11-11 | 北京动力机械研究所 | Combustion measurement structure under large gas flow using condition |
| CN112729839A (en) * | 2020-12-15 | 2021-04-30 | 北京动力机械研究所 | Combustion measurement structure under large gas flow using condition |
| CN115255819A (en) * | 2022-07-13 | 2022-11-01 | 西安远方航空技术发展有限公司 | Measuring rake forming processing method |
| CN115255819B (en) * | 2022-07-13 | 2024-04-16 | 西安远方航空技术发展有限公司 | Measuring rake forming processing method |
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| CN103115747B (en) | 2015-07-08 |
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Application publication date: 20130522 Assignee: XI'AN YUANFANG GENERAL AVIATION TECHNOLOGY DEVELOPMENT CORPORATION Assignor: Chinese Flight Test Establishment Contract record no.: 2017610000031 Denomination of invention: Large-size composite material air inlet passage measuring rake Granted publication date: 20150708 License type: Common License Record date: 20171228 |
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