CN208579903U - A kind of high intensity air intake duct wind tunnel test supporting mechanism - Google Patents
A kind of high intensity air intake duct wind tunnel test supporting mechanism Download PDFInfo
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- CN208579903U CN208579903U CN201821307071.6U CN201821307071U CN208579903U CN 208579903 U CN208579903 U CN 208579903U CN 201821307071 U CN201821307071 U CN 201821307071U CN 208579903 U CN208579903 U CN 208579903U
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- air intake
- lifting lug
- intake duct
- bracket
- mandril
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Abstract
The utility model discloses a kind of high-intensitive air intake duct wind tunnel test supporting mechanisms, test for large scale air intake duct supersonic wind tunnel.Including bracket, support arm, branch arm connection, pull rod, mandril, top, lifting lug, clamp etc..Bracket and wind-tunnel attack angle mechanism are connected, and as pedestal of the entire mechanism in wind-tunnel, branch arm connection is connected by pull rod and bracket, and support arm is connected by screw and branch arm connection, and lifting lug is connected by screw and pin and support arm；Mandril is connected by pin and pull rod, is connected by top and blind rivet and lifting lug；Lifting lug lower end and air intake duct model are connected, and inlet pressure measurement adjusts section with back-pressure and is connected by clamp and pull rod.The utility model structure is simple, easy to assembly, and substantially increases the support strength of air intake test model；Various shape air intake test models are widely used in simultaneously, only need to separately process a switching lifting lug and fixation clamp can assemble fixation therewith.
Description
Technical field
The utility model relates to a kind of high-intensitive air intake duct wind tunnel test supporting mechanisms, are used for large scale air intake duct supersonic speed
Wind tunnel test.
Background technique
Air intake duct is a critical component of airbreather, it is one and passes through well-designed airflow channel,
The superiority and inferiority of performance directly influences the overall performance of engine or even aircraft.Air intake duct wind tunnel test is assessment air intake duct
The main means of inlet characteristics parameter can, be obtained, way of realization is that air intake test model passes through supporting mechanism and wind-tunnel
The connection of attitude angle mechanism, to obtain the performance characteristics of air intake duct under different attitude angles, greatly, again due to air intake test moulded dimension
Amount is big, in addition the aerodynamic loading and oscillating load that generate during test, it is desirable that supporting mechanism has very high intensity, to meet
The security requirement of wind tunnel test.
Existing air intake duct wind tunnel test supporting mechanism is mostly single-point beam type abdomen/back support form, the supporting form knot
Structure is simple, but support strength is lower, this is larger to the size and weight limitation of air intake test model, it is desirable that air intake test mould
Type has biggish contracting ratio with respect to true model, and the bigger influence distortion that the development of air intake duct boundary-layer is internally flowed of contracting, examination
Test measured performance parameter precision decline.
With the development of combination intake (TBCC/RBCC) Push Technology, to conventional air intake duct wind tunnel test it is also proposed that
More harsh requirement, the air intake test moulded dimension after being mainly manifested in contracting ratio should be big as far as possible, to weaken boundary-layer development
Influence to being flowed in air intake duct, and variable-geometry air intake duct will also add actuation mechanism on this basis, and pressure measurement and
Back-pressure regulating system just increases the size and weight of a whole set of air intake test model, air inlet heavy weight for this large scale
Road test model, conventional single-point beam type abdomen/back support form are unable to satisfy support strength requirement.
Summary of the invention
The technical issues of the utility model solves is: overcome the deficiencies in the prior art, the utility model provide a kind of high
The air intake duct wind tunnel test supporting mechanism of intensity is tested for large scale air intake duct supersonic wind tunnel, and structure is simple, assembly side
Just, and the support strength of air intake test model is substantially increased；Various shape air intake test models are widely used in simultaneously,
Only need to separately process a switching lifting lug and fixation clamp can assemble fixation therewith.
The technical scheme adopted by the utility model is a kind of high intensity air intake duct wind tunnel test supporting mechanism, including branch
Arm, pull rod, mandril, top, lifting lug, tenses nail, clamp, tightening nut at branch arm connection；Branch arm connection one end passes through circular hole and branch
The cooperation of frame leading edge cylinder convex-segment, the other end are connect with support arm, and support arm curved end is connect with lifting lug upper end；Pull rod one end is before bracket
After the central through hole of edge cylinder convex-segment penetrates, extension end is fixed by tightening nut, and the pull rod other end is frustum structure, frustum knot
Structure is stuck in outside the central through hole of bracket leading edge cylinder convex-segment；Mandril one end is connect with the bulge-structure on the end face of pull rod frustum end,
The other end and top connect, and mandril is located at below support arm；It tenses in the through-hole on nail insertion lifting lug, the top of end and insertion lifting lug
Cephalic par is connected, and top is tensed；Clamp is mounted on mandril, and model in wind tunnel is installed below lifting lug, clamp.
The branch arm connection is L-shaped structure.
The mandril is cylinder-shaped rod-shaped.
The top includes three Duan Yuanzhu, and middle part cylindrical section diameter is greater than both ends cylindrical section；One end passes through screw thread and mandril
Cooperation, the other end are inserted into lifting lug, are clearance fit between lifting lug, and the cylindrical section of top insertion lifting lug by centre bore and is drawn
Mark closely mating connection.
Determine between the branch arm connection and bracket leading edge cylinder convex-segment, between pull rod and bracket leading edge cylinder convex-segment by key
Position guarantees that the support arm plane of symmetry is coplanar with the bracket plane of symmetry.
The utility model compared with prior art the advantages of be:
(1) the relatively conventional single-point abdomen/back support mechanism of the utility model increases the components such as mandril, direct load component by
Support arm originally individually becomes support arm and mandril two, and the two is connect with bracket different parts respectively, is fundamentally realized
Two o'clock support eliminates the appearance of stress concentration, substantially increases support strength；Except this, by top realize support arm and
Mandril closure connection then further improves support strength.
(2) the utility model is suitable for all sub- across super wind-tunnel facilities both at home and abroad, and the bracket as shown in Fig. 1 is Asia across super wind
Hole bracket common form, so the supporting mechanism of the utility model can be designed on existing bracket basis, to meet air inlet
The requirement of the high-intensitive support of road test, can also increase the progress of the components such as mandril on the basis of existing single-point abdomen/back support mechanism
Local flow improvement improves its intensity, to existing wind-tunnel facilities universality with higher and portability.
It (3) is mostly to be threadedly coupled to fix between each component of the utility model, it is simple and reliable for structure, it is easy to assembly, it is suitable extensively
For various shape air intake test models, only need to separately process a switching lifting lug and fixation clamp can assemble admittedly therewith
It is fixed.
Detailed description of the invention
Fig. 1 is the support schematic diagram of the utility model.
Fig. 2 is the top subssembly drawing of the utility model.
Fig. 3 is the overall assembling figure of the test supporting mechanism of the utility model.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawing.
Fig. 1 is the utility model support schematic diagram, and bracket 1 has leading edge cylinder convex-segment, is located on central axes, is sub- across super
The test supporting mechanism of the common form of wind-tunnel facilities bracket, the utility model is to be designed assembly accordingly.
As shown in figure 3, a kind of high intensity air intake duct wind tunnel test supporting mechanism, including support arm 2, branch arm connection 3, pull rod 4,
Mandril 5, top 6, lifting lug 7 tense nail 8, clamp 9, tightening nut 10；
Bracket 1 is connect with wind-tunnel attack angle mechanism, and branch arm connection 3 and 1 leading edge cylinder convex-segment of bracket cooperate, and passes through 4 He of pull rod
Tightening nut 10 and bracket 1 are connected, and mandril 5 passes through pin or is threadedly engaged to be connected with pull rod 4, and 6 one end of top pass through screw thread
Cooperate with mandril 5, the other end is connected by snap fastener and tension nail 8 with lifting lug 7, and 7 upper end of lifting lug passes through screw and pin and branch
Arm 2 be connected, lower end connect with air intake test model ontology, clamp 9 by screw by the pressure measurement of air intake duct model with instead
Pressure adjusts section and mandril 5 is connected.
Branch arm connection 3 is L-shaped structure.Mandril 5 is cylinder-shaped rod-shaped.Top 6 includes three Duan Yuanzhu, middle part cylindrical section diameter
Greater than both ends cylindrical section；One end is cooperated by screw thread and mandril 5, and the other end is inserted into lifting lug 7, is matched between lifting lug 7 for gap
It closes, the cylindrical section of 6 insertion lifting lug 7 of top is cooperatively connected by centre bore with nail 8 is tensed.Branch arm connection 3 and 1 leading edge cylinder of bracket
It is positioned between convex-segment, between 1 leading edge cylinder convex-segment of pull rod 4 and bracket by key, guarantees 2 plane of symmetry of support arm and 1 plane of symmetry of bracket
It is coplanar.
Bracket 1 and wind-tunnel attitude angle mechanism are connected first, the form that is connected and size are by current wind-tunnel existing interface
It determines, branch arm connection 3 and 1 leading edge cylinder convex-segment of bracket cooperate, and are positioned by key to guarantee that 2 plane of symmetry of support arm and bracket 1 are symmetrical
Face is coplanar, and then branch arm connection and bracket 1 are connected by pull rod 4 and tightening nut 10；
Then support arm 2 and mandril 5 can correspond to equipped completion, and wherein support arm 2 and branch arm connection 3 are tensed by screw, pass through
Mating surface positioning, mandril 5 and pull rod 4 are connected by pin or screw thread, after the completion of this step, are first assembled top 6 with mandril 5, are needed
By Screw assembly in place without interfering the connection of lifting lug 7 and support arm 2, after lifting lug 7 and support arm 2 are connected, then top 6 passed through into spiral shell
Line is back-outed to be cooperated with 7 shrinkage pool of lifting lug, is tensed by tensing nail 8, as shown in Figure 2；
Finally air intake duct model and pressure measurement and back-pressure regulating system are installed on supporting mechanism, wherein air intake duct mould
Type is connect with lifting lug 7, and pressure measurement is connect by clamp with mandril 5 with back-pressure regulating system.
The utility model can be applied to large scale air intake duct wind tunnel test, wherein air intake test model and pressure measurement with
For the gross mass of back-pressure regulating system in 300kg or more, total length 2.5~3m magnitude thoroughly solves original single-point abdomen/back branch
The inadequate problem of support mechanism intensity.
The content being not described in detail in this specification belongs to the well-known technique of professional and technical personnel in the field.
Claims (5)
1. a kind of high intensity air intake duct wind tunnel test supporting mechanism, which is characterized in that including support arm (2), branch arm connection (3), draw
Bar (4), top (6), lifting lug (7), tenses nail (8), clamp (9), tightening nut (10) at mandril (5)；Branch arm connection (3) one end
Cooperated by circular hole and bracket (1) leading edge cylinder convex-segment, the other end is connect with support arm (2), support arm (2) curved end and lifting lug (7)
Upper end connection；After pull rod (4) one end is penetrated from the central through hole of bracket (1) leading edge cylinder convex-segment, extension end passes through tightening nut
(10) fixed, pull rod (4) other end is frustum structure, and frustum structure is stuck in outside the central through hole of bracket (1) leading edge cylinder convex-segment；
Mandril (5) one end is connect with the bulge-structure on pull rod (4) frustum end end face, and the other end is connect with top (6), mandril (5) position
Below support arm (2)；It tenses in the through-hole in nail (8) insertion lifting lug (7), top (6) end phase of end and insertion lifting lug (7)
Even, top (6) are tensed；Clamp (9) is mounted on mandril (5), and model in wind tunnel is installed below lifting lug (7), clamp (9).
2. a kind of high-intensitive air intake duct wind tunnel test supporting mechanism according to claim 1, which is characterized in that the support arm
Connector (3) is L-shaped structure.
3. a kind of high-intensitive air intake duct wind tunnel test supporting mechanism according to claim 1 or 2, which is characterized in that described
Mandril (5) is cylinder-shaped rod-shaped.
4. a kind of high-intensitive air intake duct wind tunnel test supporting mechanism according to claim 3, which is characterized in that the top
It (6) include three Duan Yuanzhu, middle part cylindrical section diameter is greater than both ends cylindrical section；One end is cooperated by screw thread and mandril (5), the other end
Be inserted into lifting lug (7) in, between lifting lug (7) be clearance fit, top (6) insertion lifting lug (7) cylindrical section by centre bore with
Nail (8) is tensed to be cooperatively connected.
5. a kind of high-intensitive air intake duct wind tunnel test supporting mechanism according to claim 4, which is characterized in that the support arm
It is positioned between connector (3) and bracket (1) leading edge cylinder convex-segment, between pull rod (4) and bracket (1) leading edge cylinder convex-segment by key,
Guarantee that support arm (2) plane of symmetry is coplanar with bracket (1) plane of symmetry.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821307071.6U CN208579903U (en) | 2018-08-14 | 2018-08-14 | A kind of high intensity air intake duct wind tunnel test supporting mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821307071.6U CN208579903U (en) | 2018-08-14 | 2018-08-14 | A kind of high intensity air intake duct wind tunnel test supporting mechanism |
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| CN208579903U true CN208579903U (en) | 2019-03-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683485A (en) * | 2021-03-12 | 2021-04-20 | 中国空气动力研究与发展中心低速空气动力研究所 | Air inlet channel test simulation device and simulation method |
| CN113049211A (en) * | 2021-06-01 | 2021-06-29 | 中国空气动力研究与发展中心低速空气动力研究所 | Wind tunnel test device |
| CN113138061A (en) * | 2021-06-21 | 2021-07-20 | 中国航空工业集团公司沈阳空气动力研究所 | Improved wind tunnel air inlet channel test model supporting system |
| CN115628874A (en) * | 2022-12-20 | 2023-01-20 | 中国空气动力研究与发展中心超高速空气动力研究所 | Hypersonic wind tunnel closed test section model supporting device |
-
2018
- 2018-08-14 CN CN201821307071.6U patent/CN208579903U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683485A (en) * | 2021-03-12 | 2021-04-20 | 中国空气动力研究与发展中心低速空气动力研究所 | Air inlet channel test simulation device and simulation method |
| CN112683485B (en) * | 2021-03-12 | 2021-06-04 | 中国空气动力研究与发展中心低速空气动力研究所 | Air inlet channel test simulation device and simulation method |
| CN113049211A (en) * | 2021-06-01 | 2021-06-29 | 中国空气动力研究与发展中心低速空气动力研究所 | Wind tunnel test device |
| CN113049211B (en) * | 2021-06-01 | 2021-08-10 | 中国空气动力研究与发展中心低速空气动力研究所 | Wind tunnel test device |
| CN113138061A (en) * | 2021-06-21 | 2021-07-20 | 中国航空工业集团公司沈阳空气动力研究所 | Improved wind tunnel air inlet channel test model supporting system |
| CN113138061B (en) * | 2021-06-21 | 2021-08-13 | 中国航空工业集团公司沈阳空气动力研究所 | Improved wind tunnel air inlet channel test model supporting system |
| CN115628874A (en) * | 2022-12-20 | 2023-01-20 | 中国空气动力研究与发展中心超高速空气动力研究所 | Hypersonic wind tunnel closed test section model supporting device |
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