CN113267315A - Low-speed wind tunnel direct-drive gust generating device - Google Patents
Low-speed wind tunnel direct-drive gust generating device Download PDFInfo
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- CN113267315A CN113267315A CN202110505102.9A CN202110505102A CN113267315A CN 113267315 A CN113267315 A CN 113267315A CN 202110505102 A CN202110505102 A CN 202110505102A CN 113267315 A CN113267315 A CN 113267315A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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Abstract
The invention discloses a low-speed wind tunnel gust generating device which comprises a rack, a plurality of groups of blade driving devices, a plurality of groups of blade assemblies and a plurality of groups of sliding end supporting pairs, wherein the plurality of groups of blade driving devices are fixedly arranged on the rack on one side in parallel at certain intervals, the other end of the rack is fixedly arranged with the plurality of groups of sliding end supporting pairs in parallel at the same corresponding intervals, one end of each group of blade assemblies is connected with the corresponding blade driving device, the other end of each group of blade assemblies is rotatably connected with the other side of the rack through the sliding end supporting pairs, and the plurality of groups of blade assemblies are parallel with each other. The device can realize gust simulation with high frequency and large angle, and can form effective gust test in low-speed wind tunnel test; the coaxial-type quick-resetting tool has the advantages of easiness in adjustment of coaxiality, high dismounting efficiency and high resetting precision.
Description
Technical Field
The invention relates to a low-speed wind tunnel direct-drive gust generating device.
Background
With the development of the times and the progress of science and technology, the requirement of reducing the wind tunnel test aiming at gust load and gust load of a large civil airliner is more and more important. Through a wind tunnel test, gusts with specified shapes are generated through a gust generator based on a similar criterion, and a dynamic similar elastic scaling model is adopted, so that on one hand, gust loads can be predicted, gust load reduction technology is verified, and reliable data is provided for airplane strength design and flight control law design; on the other hand, the wind tunnel test can be used for verifying the gust response and gust load alleviation numerical simulation technology, so that the prediction accuracy is improved. Meanwhile, the gust wind tunnel test result also provides guarantee for the safety of the gust flight test. Therefore, a low-speed wind tunnel direct-drive gust generation device is needed for carrying out a gust alleviation test.
Disclosure of Invention
Based on the defects, the invention aims to provide the low-speed wind tunnel direct-drive gust generation device which is used for carrying out a gust alleviation test and can carry out high-frequency and large-angle wind tunnel gust field simulation.
The technical solution adopted by the invention is as follows: the utility model provides a low-speed wind tunnel gust generating device, includes frame, multiunit blade drive arrangement, multiunit blade subassembly, multiunit sliding end support pair, multiunit blade drive arrangement parallel fixed mounting each other according to certain interval in one side frame, the other one end of frame parallel fixed mounting each other with same corresponding interval has multiunit sliding end to support pair, every group the one end of blade subassembly rather than corresponding blade drive arrangement be connected, the other one end of blade subassembly and the other one side of frame support pair rotation through the sliding end and be connected, multiunit blade subassembly is parallel to each other.
The invention also has the following technical characteristics:
1. the blade driving device comprises a hydraulic swing cylinder, a hydraulic swing cylinder mounting base, a tensioning coupling, a driving end bearing assembly and a driving end rotating shaft; the sliding end support pair comprises a sliding end rotating shaft, a sliding end bearing assembly and a sliding end mounting base; one side of frame parallel fixed mounting each other according to certain interval have multiunit hydraulic swing jar mounting base, the other one end of frame parallel fixed mounting each other has multiunit slip end mounting base with same corresponding interval, every group hydraulic swing jar is installed on a set of hydraulic swing jar mounting base, every group hydraulic swing jar is connected with a drive end pivot through a set of tight coupling that rises, the one end of drive end pivot is located the drive end bearing assembly, when every group hydraulic swing jar is reciprocal to swing, carry out the moment of torsion monitoring through the torque sensor who installs on it, the other one end of every pivot drive end is connected with the one end of a set of blade subassembly, the other one end and a set of slip end pivot of this group of blade subassembly are connected, this group of slip end pivot is installed on slip end mounting base through the slip end bearing assembly.
2. The device further comprises a pull rod assembly and a plurality of groups of rolling bearings, the pull rod assembly and the blade assemblies are perpendicular to each other, the upper end and the lower end of the pull rod assembly are fixedly connected with the upper beam and the lower beam of the rack respectively, each group of blade assemblies comprises 2 blade units, one side end part of each blade unit is fixedly connected into an integral structure through a rotating shaft, the rotating shaft is installed on the inner ring of each rolling bearing, and the pull rod assembly is fixedly connected with the bearing seats of the plurality of groups of rolling bearings respectively.
3. The rolling bearing is further provided with a position adjusting assembly, the pull rod assembly comprises a multi-section pull rod, and the pull rod is connected with the position adjusting assembly and used for adjusting the coaxiality of the blade assembly.
4. The device also comprises a vertical fairing and a horizontal fairing, wherein the horizontal fairing and the vertical fairing are respectively arranged on the inner wall of the rack in the transverse direction and the longitudinal direction.
The invention has the advantages that: the device can realize gust simulation with high frequency and large angle, and can form effective gust test in low-speed wind tunnel test; the coaxial-type quick-resetting tool has the advantages of easiness in adjustment of coaxiality, high dismounting efficiency and high resetting precision. This device can realize the frequency: 0-15 Hz and a large angle: and (3) carrying out reciprocating swing adjustment of 0-15 degrees.
Drawings
FIG. 1 is a main view of a low-speed wind tunnel gust generating device;
FIG. 2 is a top view of a low-speed wind tunnel gust generation device;
FIG. 3 is a side view of a low speed wind tunnel gust generating device.
Fig. 4 is an enlarged view at I in fig. 3.
Detailed Description
The technical scheme of the invention is further explained by taking the following specific implementation examples in combination with the drawings of the specification.
Example 1
As shown in fig. 1-4, a low-speed wind tunnel gust generating device is installed in front of a wind tunnel test section, and comprises a frame, a plurality of groups of blade driving devices, a plurality of groups of blade assemblies 7 and a plurality of groups of sliding end supporting pairs, wherein the plurality of groups of blade driving devices are mutually parallel and fixedly installed on the frame on one side according to a certain interval, the other end of the frame is mutually parallel and fixedly installed with the plurality of groups of sliding end supporting pairs at the same corresponding interval, one end of each group of blade assemblies is connected with the corresponding blade driving device, the other end of each blade assembly is rotatably connected with the other side of the frame through the sliding end supporting pair, and the plurality of groups of blade assemblies are mutually parallel. The blade driving device comprises a hydraulic swing cylinder 1, a hydraulic swing cylinder mounting base 2, a tensioning coupling 4, a driving end bearing assembly 5 and a driving end rotating shaft 6; the sliding end support pair comprises a sliding end rotating shaft 9, a sliding end bearing assembly and a sliding end mounting base 11; a plurality of groups of hydraulic oscillating cylinder mounting bases 2 are fixedly mounted on one side of the rack in parallel at certain intervals, a plurality of groups of sliding end mounting bases 11 are fixedly mounted on the other end of the rack in parallel at the same corresponding intervals, each group of hydraulic oscillating cylinders 1 is mounted on one group of hydraulic oscillating cylinder mounting bases 2, each group of hydraulic oscillating cylinders 1 is connected with a driving end rotating shaft 6 through a group of tensioning couplings 4, one end of the driving end rotating shaft 6 is positioned in a driving end bearing assembly 5, when each group of hydraulic oscillating cylinders 1 oscillates in a reciprocating manner, the torque sensor 3 is arranged on the driving end of each driving end rotating shaft 6 for torque monitoring, the other end of each driving end rotating shaft 6 is connected with one end of a group of blade assemblies 7, the other end of the set of blade assemblies 7 is connected to a set of sliding end shafts 9, and the set of sliding end shafts 9 are mounted to a sliding end mounting base 11 by a sliding end bearing assembly 10.
The embodiment further comprises a pull rod assembly 8 and a plurality of groups of rolling bearings, wherein the pull rod assembly 8 and the blade assemblies are perpendicular to each other, the upper end and the lower end of the pull rod assembly 8 are fixedly connected with the upper beam and the lower beam of the rack respectively, the blade assembly 7 is adjusted in coaxiality through the pull rod assembly 8 and is improved in the whole swinging process of the blades, each group of blade assemblies comprises 2 blade units, one side end part of each blade unit is fixedly connected into an integral structure through a rotating shaft 18, the rotating shaft 18 is installed on the inner ring of each rolling bearing 13, and the pull rod assembly is fixedly connected with bearing seats of the plurality of groups of rolling bearings respectively. The rolling bearing on still be provided with the position control subassembly, pull rod assembly include the multistage pull rod, the lower extreme of first pull rod 15 passes through nut 16 threaded connection with the position control subassembly, the upper end of second pull rod 17 passes through nut 16 threaded connection with the position control subassembly, the multistage pull rod connects gradually like this for adjust the axiality of blade subassembly.
The hydraulic swing cylinder 1 realizes gust field simulation through reciprocating swing of the driving blade assembly 7, the driving end bearing assembly 5, the sliding end bearing assembly 10 and the rolling bearing 13 realize three-point coaxiality adjustment, wherein the driving end bearing assembly 5 is an angular contact ball bearing, the sliding end bearing assembly 10 is a radial bearing, the driving end bearing assembly 5 realizes large-gap adjustment, the sliding end bearing assembly 10 performs small-gap adjustment, and the rolling bearing 13 realizes self-adaptation and rigidity adjustment.
The embodiment also comprises a vertical fairing 12 and a horizontal fairing 14, wherein the horizontal fairing 14 and the vertical fairing 12 are respectively installed on the inner wall of the rack in the transverse direction and the longitudinal direction, and the whole structure is rectified to reduce the air flow resistance loss.
The low-speed wind tunnel gust generating device of this embodiment is rational in infrastructure overall arrangement, and the axiality is easily adjusted, and the dismouting is efficient, and the precision that resets is high, can realize high frequency and wide-angle gust simulation.
Claims (5)
1. The utility model provides a low-speed wind tunnel gust generating device, includes frame, multiunit blade drive arrangement, multiunit blade subassembly, multiunit slip end support pair, its characterized in that: the blade driving devices are fixedly arranged on the rack on one side in parallel at certain intervals, the other end of the rack is fixedly provided with a plurality of sliding end supporting pairs in parallel at the same corresponding intervals, one end of each blade assembly is connected with the corresponding blade driving device, the other end of each blade assembly is rotatably connected with the other side of the rack through the sliding end supporting pairs, and the blade assemblies are parallel.
2. A low speed wind tunnel gust generating device according to claim 1, characterised in that: the blade driving device comprises a hydraulic swing cylinder, a hydraulic swing cylinder mounting base, a tensioning coupling, a driving end bearing assembly and a driving end rotating shaft; the sliding end support pair comprises a sliding end rotating shaft, a sliding end bearing assembly and a sliding end mounting base; one side of frame parallel fixed mounting each other according to certain interval have multiunit hydraulic swing jar mounting base, the other one end of frame parallel fixed mounting each other has multiunit slip end mounting base with same corresponding interval, every group hydraulic swing jar is installed on a set of hydraulic swing jar mounting base, every group hydraulic swing jar is connected with a drive end pivot through a set of tight coupling that rises, the one end of drive end pivot is located the drive end bearing assembly, when every group hydraulic swing jar is reciprocal to swing, carry out the moment of torsion monitoring through the torque sensor who installs on it, the other one end of every pivot drive end is connected with the one end of a set of blade subassembly, the other one end and a set of slip end pivot of this group of blade subassembly are connected, this group of slip end pivot is installed on slip end mounting base through the slip end.
3. A low speed wind tunnel gust generating device according to claim 1, characterised in that: the combined type blade assembly comprises a rack, and is characterized by further comprising a pull rod assembly and a plurality of groups of rolling bearings, wherein the pull rod assembly and the blade assemblies are perpendicular to each other, the upper end and the lower end of the pull rod assembly are fixedly connected with the upper beam and the lower beam of the rack respectively, each group of blade assemblies comprises 2 blade units, one side end part of each of the 2 blade units is fixedly connected into an integral structure through a rotating shaft, the rotating shafts are installed on the inner rings of the rolling bearings, and the pull rod assembly is fixedly connected with bearing seats of the plurality of groups of rolling bearings respectively.
4. A low speed wind tunnel gust generating device according to claim 3, characterised in that: the rolling bearing is further provided with a position adjusting assembly, the pull rod assembly comprises a multi-section pull rod, and the pull rod is connected with the position adjusting assembly and used for adjusting the coaxiality of the blade assembly.
5. A low speed wind tunnel gust generation device according to any one of claims 1 to 4, characterised in that: the horizontal fairing and the vertical fairing are respectively installed on the inner wall of the rack in the transverse direction and the longitudinal direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110505102.9A CN113267315B (en) | 2021-05-10 | 2021-05-10 | Low-speed wind tunnel direct-drive gust generating device |
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| CN202110505102.9A CN113267315B (en) | 2021-05-10 | 2021-05-10 | Low-speed wind tunnel direct-drive gust generating device |
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| CN113267315A true CN113267315A (en) | 2021-08-17 |
| CN113267315B CN113267315B (en) | 2022-10-21 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465868A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two parallel blade grids on two sides |
| CN113465870A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side parallel blade grid high-speed wind tunnel gust simulation device |
| CN113465871A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Parallel binary cascade high-speed wind tunnel gust simulation device |
| CN113465867A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side single-blade-grid high-speed wind tunnel gust simulation device |
| CN113465869A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two side blade grids |
| CN113567085A (en) * | 2021-08-20 | 2021-10-29 | 中国空气动力研究与发展中心高速空气动力研究所 | Binary cascade high-speed wind tunnel gust simulation device |
| CN114235329A (en) * | 2021-12-02 | 2022-03-25 | 中国航空工业集团公司西安飞机设计研究所 | Full-aircraft sudden wind load wind tunnel test device |
| CN115371945A (en) * | 2022-08-09 | 2022-11-22 | 中国航空工业集团公司哈尔滨空气动力研究所 | Combined frequency variable waveform wind tunnel test gust generation system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465868A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two parallel blade grids on two sides |
| CN113465870A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side parallel blade grid high-speed wind tunnel gust simulation device |
| CN113465871A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Parallel binary cascade high-speed wind tunnel gust simulation device |
| CN113465867A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side single-blade-grid high-speed wind tunnel gust simulation device |
| CN113465869A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two side blade grids |
| CN113567085A (en) * | 2021-08-20 | 2021-10-29 | 中国空气动力研究与发展中心高速空气动力研究所 | Binary cascade high-speed wind tunnel gust simulation device |
| CN114235329A (en) * | 2021-12-02 | 2022-03-25 | 中国航空工业集团公司西安飞机设计研究所 | Full-aircraft sudden wind load wind tunnel test device |
| CN115371945A (en) * | 2022-08-09 | 2022-11-22 | 中国航空工业集团公司哈尔滨空气动力研究所 | Combined frequency variable waveform wind tunnel test gust generation system |
| CN115371945B (en) * | 2022-08-09 | 2023-03-03 | 中国航空工业集团公司哈尔滨空气动力研究所 | Combined frequency variable waveform wind tunnel test gust generation system |
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