CN117629565A - Five-hole probe rotation measuring device for wind tunnel test of air inlet channel - Google Patents
Five-hole probe rotation measuring device for wind tunnel test of air inlet channel Download PDFInfo
- Publication number
- CN117629565A CN117629565A CN202311417050.5A CN202311417050A CN117629565A CN 117629565 A CN117629565 A CN 117629565A CN 202311417050 A CN202311417050 A CN 202311417050A CN 117629565 A CN117629565 A CN 117629565A
- Authority
- CN
- China
- Prior art keywords
- measuring
- section
- air inlet
- rotary
- hole probe
- 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.)
- Pending
Links
- 239000000523 sample Substances 0.000 title claims abstract description 49
- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 230000003068 static effect Effects 0.000 claims abstract description 45
- 238000005259 measurement Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 5
- 239000003550 marker Substances 0.000 claims description 5
- 230000000750 progressive effect Effects 0.000 claims description 5
- 238000000691 measurement method Methods 0.000 claims description 3
- 238000009530 blood pressure measurement Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- 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
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a five-hole probe rotation measuring device for an air inlet duct wind tunnel test, which belongs to the field of wind tunnel tests and comprises a driving motor, a rotation measuring section, a front end and a rear end static connecting section, four five-hole probe measuring rakes and a dynamic pressure measuring rake, wherein a central cone is arranged in the rotation measuring section, the front end static connecting section and the rear end static connecting section respectively realize dynamic and static interface sealing with the rotation measuring section through a Grignard ring, the driving motor drives the rotation measuring section to rotate, target seats of the four five-hole probe measuring rakes and the dynamic pressure measuring rake are fixed on the outer side wall of the rotation measuring section, a round measuring surface is arranged in front of the rotation measuring section, measuring ends of the four five-hole probe measuring rakes are positioned on the measuring surface and are arranged in a cross shape and are used for measuring steady pressure and speed distribution of the air inlet duct, and the rotation measuring device can realize measurement of the performance of a measured section only by one circumferential degree of freedom. The positioning device has the advantages of high positioning precision, good overall sealing performance, simple structure and easy realization.
Description
Technical Field
The invention belongs to the field of wind tunnel tests, and particularly relates to a five-hole probe rotation measuring device for an air inlet duct wind tunnel test.
Background
The air inlet channel is an interface part for connecting the aircraft and the engine, and plays a vital role in the performance of the aircraft. The method comprises the steps that an air inlet channel model wind tunnel test, an engine ground distortion simulation test, an air inlet channel/engine ground compatibility test and a flight test are sequentially completed from design to use, wherein the air inlet channel model wind tunnel test is a basis and a precondition. At present, in an air inlet channel model wind tunnel test, the performance of an air inlet channel is evaluated mainly by means of a pressure measuring rake. The number and arrangement of the pressure measuring rakes are generally determined by the engine manufacturer, and are generally measured by using five-hole probe measuring rakes with two rakes included at 45 degrees or 60 degrees. With the improvement of the aircraft pilot requirements, new requirements are put forward on the test data quantity and the fineness of the air inlet channel, and the existing rotary measuring section is complex in structure and high in blocking degree.
Disclosure of Invention
Based on the defects, the invention aims to provide the five-hole probe rotation measuring device for the wind tunnel test of the air inlet channel, which solves the problems of complex structure and high blocking degree of the existing measuring device.
The technical scheme adopted by the invention is as follows: the utility model provides an inlet duct wind tunnel test five-hole probe rotation measurement device, includes driving motor, rotation measurement section, the static linkage segment of front end, the static linkage segment of rear end, four five-hole probe measurement harrows and a dynamic pressure measurement harrow, the static linkage segment of front end and the static linkage segment of rear end pass through many spinal branch vaulting poles axial fixings and connect, the static linkage segment of front end and experimental inlet duct model exit linkage, the static linkage segment of rear end be connected with the experimental suction line of inlet duct, rotation measurement section inside have a central cone, the front end of rotation measurement section insert the static linkage segment inner chamber of front end, the rear end of rotation measurement section inserts the static linkage segment inner chamber of rear end, static linkage segment of front end and the static linkage segment of rear end realize sound interface seal through gray circle and rotation measurement section respectively, the driving motor is fixedly connected with the rear end static connecting section through a motor connecting piece, a power output shaft of the driving motor is connected with a driving gear through a key, the outer wall of the rotary measuring section is fixedly connected with an annular driven tooth, the annular driven tooth is meshed with the driving gear so as to drive the rotary measuring section to rotate, four five-hole probe measuring rakes and a target seat of a dynamic pressure measuring rake are both fixed on the outer side wall of the rotary measuring section, the front of the rotary measuring section is a circular measuring surface, the radius of the measuring surface is the same as the inner diameter of the rotary measuring section, the measuring ends of the four five-hole probe measuring rakes are all positioned on the measuring surface and are arranged in a cross shape and are used for measuring steady pressure and speed distribution of an air inlet channel, one dynamic pressure measuring rake is arranged on the middle angular bisector of two adjacent five-hole probe measuring rakes, the measuring end of the dynamic pressure measuring rake is also positioned on the measuring surface and is used for measuring the dynamic pressure of the air inlet channel; when the rotation measuring device works, only one circumferential degree of freedom is needed, the circumferential direction is measured once every time when the rotation measuring device rotates by one angle, and the data obtained from each angle within the range of +/-180 degrees form the measurement section data of the air inlet channel in the state.
Further, the radial positions of the measuring ends of the four five-hole probe measuring rakes are distributed according to an equal-area ring, and the radius R of the equal-area ring i The calculation formula of (2) is as follows:
wherein: r is the inner diameter of the rotation measuring section, R is the radius of the central cone, n is the total number of distributed rings of measuring points, n=4, i=1, 2,3,4.
Further, the radial length from the measuring end of the dynamic pressure measuring harrow to the central shaft of the rotary measuring section is 90% of the inner diameter length of the rotary measuring section.
Further, the positions of the four five-hole probe measuring harrows and the target seats of the dynamic pressure measuring harrows on the side wall of the rotary measuring section are staggered along the flow direction, so that the blocking degree of the same section is reduced.
Further, the invention also comprises a magnetic ring, a zero position identification device and a magnetic ring encoder, wherein the outer wall of the rotary measuring section is fixedly connected with the magnetic ring, a zero positioning standard block is arranged on the magnetic ring, the zero position identification device is fixed on a supporting rod, and when the measuring end of the zero position identification device coincides with the zero positioning standard block, the initial zero position of the rotary measuring section is fed back; the magnetic ring encoder is fixedly connected with the rear end static connecting section, and a reading head of the magnetic ring encoder is positioned above the magnetic ring and is used for recording the rotated angle value of the rotation measuring section.
Another object of the present invention is a measurement method obtained by a five-hole probe rotation measurement device for an air inlet duct wind tunnel test as described above, as follows: during the test, the rotary measuring device is rotated anticlockwise to the 180-degree position corresponding to the zero marker to wait, the wind tunnel is winded to test wind speed, the air inlet channel starts to suck after the wind speed is stable, the rotary measuring device starts to work after the flow field in the air inlet channel reaches a stable state, first the 180-degree position data corresponding to the zero marker is collected, after the collection is completed, the rotary measuring device is rotated clockwise by a certain angle interval according to the test requirement, the rotary measuring device waits for 5 seconds to collect the position data after reaching the designated angle position, the rotary measuring device continues to rotate to the next angle position after the collection is completed, the process is repeated until all the angle positions are collected, the rotary measuring device is in the range of +/-180 degrees, and the data obtained at each position form the progressive matching section performance data of the air inlet channel under the state, including stable dynamic pressure distribution and speed distribution.
Further, according to the measuring method, the measured pressures of the 5 holes are calculated to obtain the total pressure, the static pressure, the Mach number and the speed direction of the measuring point, and then the calculation formulas of the speed components and the rotational flow angles of the speed in three directions according to the current speed are as follows:
Vx＝Vcosβcosα
Vy＝Vsinβ
Vz＝Vcosβsinα
θ＝Vy/Vx＝tgβcosα
wherein V, vx, vy and Vz are velocity components of the speed in three directions under the current velocity calculated according to the number of the March, alpha and beta are attack angles and sideslip angles measured by a measuring device, theta is a swirl angle, the directions of the swirl angles are defined according to actual practice, and the directions of the swirl angles are positive and negative in accordance with the rotation direction of a propeller or a fan.
The invention has the advantages and beneficial effects that: the measuring device can obtain high-density pressure and speed data of the concurrent matching section of the air inlet channel, and can realize measurement of the performance of the measuring section only by one circumferential degree of freedom. The positioning device has the advantages of high positioning precision, good overall sealing performance, simple structure and easy realization. The method can simultaneously measure the internal stability, dynamic pressure and speed of the air inlet, flexibly change and encrypt the measurement position according to the test requirement, and increase the information quantity and flexibility of the acquired data of the air inlet wind tunnel test.
Drawings
FIG. 1 is a front view I of the present invention;
FIG. 2 is a perspective view of the external structure of the present invention;
FIG. 3 is a view of FIG. 1 rotated a certain angle;
FIG. 4 is a cross-sectional view taken at position A-A in FIG. 3;
FIG. 5 is a cross-sectional view of the position of the measurement end of 5 measurement rake on the measurement face;
FIG. 6 is a diagram of a probe calibration coordinate system;
FIG. 7 is a diagram of a probe measurement coordinate system;
FIG. 8 is a cloud chart of total pressure recovery coefficients of four different angle intervals of the rotary rake air inlet measurement section;
FIG. 9 is a rotational flow angle cloud of the air inlet duct measurement section for four different angular intervals of the rotary rake.
The device comprises a first five-hole probe measuring rake, a second five-hole probe measuring rake, a third five-hole probe measuring rake, a fourth five-hole probe measuring rake, a dynamic pressure measuring rake, a driving motor, a driving gear, a motor connecting piece, a rear end static connecting section, a ring-shaped driven tooth, a magnetic ring, a zero point positioning standard block, a 13, a supporting rod, a 14, a magnetic ring encoder, a 15, a zero point position identifying device, a 16, a rotation measuring section, a 17, a front end static connecting section, a 18, a five-hole probe measuring rake seat, a 19, a dynamic pressure measuring rake seat, a 20, a rear gray ring, a 21, a front gray ring, a 22 and a central cone.
Detailed Description
The following specific examples are set forth in connection with the drawings of the specification to further illustrate the technical scheme of the invention.
Example 1
As shown in fig. 1-4, a five-hole probe rotation measuring device for an air inlet duct wind tunnel test comprises a driving motor 6, a rotation measuring section 16, a front end static connecting section 17 and a rear end static connecting section 9, wherein a first five-hole probe measuring rake 1, a second five-hole probe measuring rake 2, a third five-hole probe measuring rake 3, a fourth five-hole probe measuring rake 4 and a dynamic pressure measuring rake 5 are arranged on the front end static connecting section 17 and the rear end static connecting section 9, the front end static connecting section 17 is fixedly connected with an outlet of the air inlet duct test model, the rear end static connecting section 9 is connected with an air inlet duct test suction pipeline, a central cone 22 is arranged in the rotation measuring section 16, the front end of the rotation measuring section 16 is inserted into the inner cavity of the front end static connecting section 17, the rear end of the rotation measuring section 16 is inserted into the inner cavity of the rear end static connecting section 9, the front end static connecting section 17 and the rear end static connecting section 9 respectively realize dynamic and static interface sealing with the two ends of the rotary measuring section 16 through a front Gelai ring 21 and a rear Gelai ring 20, the driving motor 6 is fixedly connected with the rear end static connecting section 9 through a motor connecting piece 8, a power output shaft of the driving motor 6 is connected with the driving gear 7 through a key, the outer wall of the rotary measuring section 16 is fixedly connected with an annular driven tooth 10, the annular driven tooth 10 is meshed with the driving gear 7 so as to drive the rotary measuring section 16 to rotate, the four five-hole probe measuring harrows and a target seat of a dynamic pressure measuring harrow are fixed on the outer side wall of the rotary measuring section 16, the front part of the rotary measuring section 16 is a circular measuring surface, the radius of the measuring surface is the same as the inner diameter of the rotary measuring section 16, the measuring ends of the four five-hole probe measuring rakes are positioned on the measuring surface and are arranged in a cross shape and used for measuring steady-state pressure and speed distribution of an air inlet channel, a dynamic pressure measuring rake 5 is arranged on the middle angular bisector of the third five-hole probe measuring rake 3 and the fourth five-hole probe measuring rake 4, and the measuring end of the dynamic pressure measuring rake 5 is also positioned on the measuring surface and used for measuring dynamic pressure of the air inlet channel; when the rotation measuring device works, only one circumferential degree of freedom is needed, the circumferential direction is measured once every time when the rotation measuring device rotates by one angle, and the data obtained from each angle within the range of +/-180 degrees form the measurement section data of the air inlet channel in the state.
As shown in FIG. 5, the radial positions of the measuring ends of the four five-hole probe measuring rakes are distributed according to an equal area ring, and the radius R of the equal area ring i The calculation formula of (2) is as follows:
wherein: r is the inner diameter of the rotation measuring section, R is the radius of the central cone, n is the total number of distributed rings of measuring points, n=4, i=1, 2,3,4.
The radial length from the measuring end of the dynamic pressure measuring rake 5 to the central axis of the rotary measuring section 16 is 90% of the inner diameter length of the intermediate rotary section.
As shown in fig. 2 and 4, the positions of the four five-hole probe measuring harrows and the target seats of the dynamic pressure measuring harrows on the side wall of the middle rotating section are staggered along the flow direction so as to reduce the blocking degree of the same section.
The rotary measuring device of the embodiment further comprises a magnetic ring 11, a zero position identifying device 15 and a magnetic ring encoder 14, wherein the magnetic ring 11 is fixedly connected to the outer wall of the rotary measuring section 16, a zero positioning standard block 12 is arranged on the magnetic ring 11, the zero position identifying device 15 is fixed on any support rod 13, and when the measuring end of the zero position identifying device 15 is overlapped with the zero positioning standard block 12, the initial zero position of the rotary measuring section 16 is fed back; the magnetic ring encoder 14 is fixedly connected with the rear end static connecting section 9, a reading head of the magnetic ring encoder 14 is positioned above the magnetic ring 11 and used for recording the angle value rotated by the middle rotating section, high-precision closed-loop control is implemented on the measuring device, the angle rotation precision is within 3', and the zero position identification device 15 ensures that the position can be accurately marked after power-off restarting.
As shown in fig. 6 to 7, the total pressure, static pressure, mach number and speed direction of the measuring point are calculated by the pressure measured by the measuring device as above, and then the calculation formulas of the speed components and the swirl angle of the speed in three directions according to the speed at that time are as follows:
Vx＝Vcosβcosα
Vy＝Vsinβ
Vz＝Vcosβsinα
θ＝Vy/Vx＝tgβcosα
wherein V, vx, vy and Vz are velocity components of the speed in three directions under the current velocity calculated according to the number of the March, alpha and beta are attack angles and sideslip angles measured by a measuring device, theta is a swirl angle, the directions of the swirl angles are defined according to actual practice, and the directions of the swirl angles are positive and negative in accordance with the rotation direction of a propeller or a fan.
During the test, the rotary measuring device is rotated anticlockwise to the position 180 degrees relative to the zero marker for waiting, the wind tunnel is winded to the test wind speed, the air inlet is pumped after the wind speed is stabilized, the rotary measuring device starts to work after the flow field in the air inlet reaches a stable state, the relative zero position 180 degrees position data are collected firstly, after the collection is completed, the rotary measuring device is rotated clockwise by a certain angle interval according to the test requirement, the position data are collected after the rotary measuring device reaches the designated angle position for waiting 5 seconds, the rotary measuring device continues to rotate to the next angle position after the collection is completed, the process is repeated until all the angle positions are collected, the rotary measuring device is in the range of +/-180 degrees, the data obtained at each position form the air inlet progressive matching section performance data in the state, the stable dynamic pressure distribution and the speed distribution are included, as shown in fig. 8-9, the air inlet progressive matching section total pressure recovery coefficient cloud image and the air inlet measuring section swirl angle cloud image can be obtained, the air inlet progressive matching section high density pressure and the speed data are obtained, the data are far larger than the conventional fixed total pressure rake, a novel measuring means is provided for the performance evaluation of the air inlet, and the test performance of the air inlet is verified, and the test requirement is satisfied by the measurement accuracy of the rotary measuring device.
Claims (7)
1. The utility model provides a rotatory measuring device of five hole probes of intake duct wind-tunnel test, includes driving motor, rotation measurement section, the static linkage segment of front end, the static linkage segment of rear end, four five hole probe measurement harrows and a dynamic pressure measurement harrow, its characterized in that: the front end static connecting section and the rear end static connecting section are fixedly connected through a plurality of supporting rods, the front end static connecting section is fixedly connected with a test air inlet channel model outlet, the rear end static connecting section is connected with an air inlet channel test suction pipeline, a central cone is arranged in the rotary measuring section, the front end of the rotary measuring section is inserted into an inner cavity of the front end static connecting section, the rear end of the rotary measuring section is inserted into an inner cavity of the rear end static connecting section, the front end static connecting section and the rear end static connecting section are respectively and fixedly connected with the rotary measuring section through a Gray ring, a power output shaft of the driving motor is connected with a driving gear through a key, an outer wall of the rotary measuring section is fixedly connected with annular driven teeth, the annular driven teeth are meshed with the driving gear, thereby the rotary measuring section is driven to rotate, four five-hole probe measuring rakes and a target seat of a dynamic pressure measuring rakes are fixed on the outer side wall of the rotary measuring section, a round measuring surface in front of the rotary measuring section, the four-hole probe measuring rakes are arranged on the same angular surface as the measuring surface of the dynamic pressure measuring rakes, and the dynamic pressure measuring rakes are arranged on the same measuring surface, and the two-dimensional pressure measuring rakes are arranged on the same measuring surface and the dynamic inlet channel measuring side, and the pressure measuring probe measuring angle measuring curve is arranged on the two-shaped measuring inlet channel measuring surfaces and the dynamic pressure measuring curve is arranged on the inlet channel; when the rotation measuring device works, only one circumferential degree of freedom is needed, the circumferential direction is measured once every time when the rotation measuring device rotates by one angle, and the data obtained from each angle within the range of +/-180 degrees form the measurement section data of the air inlet channel in the state.
2. The five-hole probe rotation measurement device for the wind tunnel test of the air inlet channel according to claim 1, wherein the five-hole probe rotation measurement device is characterized in that: the radial positions of the measuring ends of the four five-hole probe measuring rakes are distributed according to equal-area rings, and the radius R of the equal-area rings i The calculation formula of (2) is as follows:
wherein: r is the inner diameter of the rotation measuring section, R is the radius of the central cone, n is the total number of distributed rings of measuring points, n=4, i=1, 2,3,4.
3. The five-hole probe rotation measurement device for the wind tunnel test of the air inlet channel according to claim 2, wherein the five-hole probe rotation measurement device is characterized in that: the radial length from the measuring end of the dynamic pressure measuring harrow to the central shaft of the rotary measuring section is 90% of the inner diameter length of the rotary measuring section.
4. A five-hole probe rotation measurement device for an air inlet duct wind tunnel test according to claim 3, wherein: the positions of the four five-hole probe measuring harrows and the target seats of the dynamic pressure measuring harrows on the side wall of the rotary measuring section are staggered along the flow direction and are used for reducing the blocking degree of the same section.
5. The five-hole probe rotation measurement device for the wind tunnel test of the air inlet duct according to any one of claims 1 to 4, wherein: the device comprises a rotary measuring section, a support rod, a zero position identification device and a magnetic ring encoder, wherein the outer wall of the rotary measuring section is fixedly connected with a magnetic ring, a zero positioning standard block is arranged on the magnetic ring, the zero position identification device is fixed on the support rod, and when the measuring end of the zero position identification device coincides with the zero positioning standard block, the initial zero position of the rotary measuring section is fed back; the magnetic ring encoder is fixedly connected with the rear end static connecting section, and a reading head of the magnetic ring encoder is positioned above the magnetic ring and is used for recording the rotated angle value of the rotation measuring section.
6. The measurement method of the five-hole probe rotation measurement device for the air inlet duct wind tunnel test according to claim 5, wherein the method comprises the following steps: during the test, the rotary measuring device is rotated anticlockwise to the 180-degree position corresponding to the zero marker to wait, the wind tunnel is winded to test wind speed, the air inlet channel starts to suck after the wind speed is stable, the rotary measuring device starts to work after the flow field in the air inlet channel reaches a stable state, first the 180-degree position data corresponding to the zero marker is collected, after the collection is completed, the rotary measuring device is rotated clockwise by a certain angle interval according to the test requirement, the rotary measuring device waits for 5 seconds to collect the position data after reaching the designated angle position, the rotary measuring device continues to rotate to the next angle position after the collection is completed, the process is repeated until all the angle positions are collected, the rotary measuring device is in the range of +/-180 degrees, and the data obtained at each position form the progressive matching section performance data of the air inlet channel under the state, including stable dynamic pressure distribution and speed distribution.
7. The measurement method according to claim 6, wherein: and calculating the total pressure, static pressure, mach number and speed direction of the measuring point according to the measured pressure, and then calculating the speed components and rotational flow angles of the speed in three directions according to the current speed as follows:
Vx＝Vcosβcosα
Vy＝Vsinβ
Vz＝Vcosβsinα
θ＝Vy/Vx＝tgβcosα
wherein V, vx, vy and Vz are velocity components of the speed in three directions under the current velocity calculated according to the number of the March, alpha and beta are attack angles and sideslip angles measured by a measuring device, theta is a swirl angle, the directions of the swirl angles are defined according to actual practice, and the directions of the swirl angles are positive and negative in accordance with the rotation direction of a propeller or a fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311417050.5A CN117629565A (en) | 2023-10-30 | 2023-10-30 | Five-hole probe rotation measuring device for wind tunnel test of air inlet channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311417050.5A CN117629565A (en) | 2023-10-30 | 2023-10-30 | Five-hole probe rotation measuring device for wind tunnel test of air inlet channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117629565A true CN117629565A (en) | 2024-03-01 |
Family
ID=90020744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311417050.5A Pending CN117629565A (en) | 2023-10-30 | 2023-10-30 | Five-hole probe rotation measuring device for wind tunnel test of air inlet channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117629565A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117890063A (en) * | 2024-03-15 | 2024-04-16 | 中国空气动力研究与发展中心高速空气动力研究所 | Pressure test section design method for concurrent direct connection high-speed wind tunnel test |
-
2023
- 2023-10-30 CN CN202311417050.5A patent/CN117629565A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117890063A (en) * | 2024-03-15 | 2024-04-16 | 中国空气动力研究与发展中心高速空气动力研究所 | Pressure test section design method for concurrent direct connection high-speed wind tunnel test |
| CN117890063B (en) * | 2024-03-15 | 2024-05-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Pressure test section design method for concurrent direct connection high-speed wind tunnel test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112556978B (en) | Wind tunnel test airflow field rotation measuring device | |
| CN117629565A (en) | Five-hole probe rotation measuring device for wind tunnel test of air inlet channel | |
| CN111337261B (en) | Rotary machine interstage and outlet total pressure probe | |
| Westphal et al. | Experimental study of flow reattachment in a single-sided sudden expansion | |
| CN103245291B (en) | Blade parts assembly accuracy detection method | |
| CN203053472U (en) | Tool for measuring pressure and velocity of eddy flow field | |
| CN202793795U (en) | Fixed measuring rake for measuring pneumatic parameters | |
| CN212254182U (en) | Composite pressure-temperature probe | |
| CN113109015A (en) | Many pneumatic parameter measuring device of intake duct export cross-section | |
| Whitfield et al. | A three-dimensional analysis of rotor wakes | |
| CN113029502A (en) | Nacelle wind tunnel test method for simultaneously simulating air intake and air exhaust | |
| CN105588703A (en) | 12-hole omni-directional probe for subsonic-speed and complex three-dimensional flow field measurement | |
| CN112729756B (en) | Rotary rake total pressure test system and test method suitable for aircraft air inlet channel | |
| CN116104791A (en) | Test bed and test method for influence of axial flow compressor blade tip clearance flow on stall | |
| CN111498141B (en) | Method and device for realizing real-time monitoring of airflow angle based on micro probe | |
| CN111089668B (en) | Device and method for accurately measuring temperature rise efficiency of compressor stage | |
| CN113551868A (en) | Probe for measuring three-dimensional dynamic boundary layer of hub between rotating and static of fan | |
| CN212082825U (en) | Full-parameter probe for measuring high subsonic three-dimensional steady flow field | |
| CN111089669A (en) | Device and method for accurately measuring turbine stage efficiency | |
| CN108036920B (en) | High-speed wind tunnel rotating missile free rotation speed measuring system | |
| CN113252280B (en) | Nacelle test device capable of simulating air intake and exhaust simultaneously | |
| CN212458736U (en) | Device for accurately measuring turbine stage efficiency | |
| WAINAUSKI et al. | Aerodynamic performance of a counter rotating Prop-Fan | |
| CN111141522A (en) | Full-parameter probe for measuring high subsonic three-dimensional steady flow field | |
| CN217845027U (en) | Measuring device for detecting gap between impeller and air inlet casing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |