CN113419078B - Wind vane type sensor for measuring pneumatic data - Google Patents
Wind vane type sensor for measuring pneumatic data Download PDFInfo
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- CN113419078B CN113419078B CN202110671915.5A CN202110671915A CN113419078B CN 113419078 B CN113419078 B CN 113419078B CN 202110671915 A CN202110671915 A CN 202110671915A CN 113419078 B CN113419078 B CN 113419078B
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- total pressure
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- angle
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- 230000003068 static effect Effects 0.000 claims abstract description 25
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
- G01P13/025—Indicating direction only, e.g. by weather vane indicating air data, i.e. flight variables of an aircraft, e.g. angle of attack, side slip, shear, yaw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a weathervaning sensor for measuring pneumatic data, and particularly relates to the technical field of sensors. A weathervane sensor for measuring pneumatic data comprises a airspeed tube assembly and two sets of weathervane assemblies; the first total pressure pipe head and the axis of the front pipe are overlapped, the second total pressure pipe head and the first total pressure pipe head form an included angle of 40 degrees, and the third total pressure pipe head and the second total pressure pipe head form an included angle of 40 degrees; the first total pressure pipe head, the second total pressure pipe head and the third total pressure pipe head are respectively connected with a total pressure guide pipe, and the static pressure guide pipe penetrates through the rear pipe; the angle sensor is arranged on the horizontal side surface of the front pipe, the angle sensor is arranged on the obliquely lower direction of the front pipe, the angle sensor is connected with the vane rotating shaft, and the vane rod penetrates through the vane rotating shaft; the vane blade is arranged on the vane post. The technical scheme of the invention solves the problems that the traditional weathervane sensor has a small measuring range and can not meet the requirement of measuring a large attack angle of more than 30 degrees, and can be used for flight test of a large attack angle model.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a wind vane type sensor for measuring pneumatic data.
Background
The model flight test is a simulated flight test method for carrying out aerodynamic problem research by flying an aircraft model in the atmosphere, and is one of three aerodynamic research means. The pneumatic characteristic and the stability characteristic of the large attack angle are obtained by developing a model large attack angle flight test, so that the dangerous boundary flight control law can be effectively verified, and technical support is provided for developing fighter plane with overspeed maneuver flight capability. The wind vane type sensor capable of accurately measuring aerodynamic data of the model airplane in a large-angle-of-attack flight state is developed and is a key for implementing a large-angle-of-attack flight test. The pneumatic data to be measured mainly include: airspeed, angle of attack, sideslip angle. The traditional weathervaning sensor has a small measuring range and cannot meet the requirement of measuring a large attack angle of more than 30 degrees.
Disclosure of Invention
The invention aims to provide an air vane type sensor for measuring pneumatic data, which solves the problems that the traditional air vane type sensor has a small measuring range and cannot meet the requirement of measuring a large attack angle of more than 30 degrees.
In order to achieve the above purpose, the technical scheme of the invention is as follows: a weathervane sensor for measuring pneumatic data comprises a airspeed tube assembly and two sets of weathervane assemblies;
The airspeed tube assembly comprises a front tube, a rear tube, a first total pressure tube head, a second total pressure tube head, a third total pressure tube head, a total pressure guide tube and a static pressure guide tube, wherein the front tube and the rear tube are fixedly connected, the first total pressure tube head coincides with the axis of the front tube, the second total pressure tube head and the first total pressure tube head form an included angle of 40 degrees, and the third total pressure tube head and the second total pressure tube head form an included angle of 40 degrees; the first total pressure pipe head, the second total pressure pipe head and the third total pressure pipe head are respectively connected with a total pressure pipe, and the other end of each total pressure pipe penetrates out of the rear pipe; the static pressure guide pipe penetrates the rear pipe;
Each set of the weathervaning assembly comprises an angle sensor, a weathervaning rotating shaft, weathervaning rods and weathervaning blades, wherein any one of the angle sensors is arranged on the horizontal side surface of the front pipe, the other angle sensor is arranged in the direction which is obliquely below an included angle of 45 degrees with the axis of the front pipe, a lead of the angle sensor passes through the rear pipe, the other end of the angle sensor is detachably connected with one end of the weathervaning rotating shaft, and the weathervaning rods penetrate through the other end of the weathervaning rotating shaft; the vane blade is arranged at one end of the vane post.
Further, the angle sensor adopts a photoelectric absolute angle encoder.
Further, four static pressure holes are symmetrically formed in the pipe wall of the rear pipe, an included angle between the axes of the two static pressure holes on the upper side is 38 degrees, and an included angle between the axes of the two static pressure holes on the upper side is 43 degrees.
Through the arrangement, the accuracy of measuring static pressure can be improved by adopting the included angle.
Furthermore, the vane rod is made of stainless steel materials, and the vane blade is made of glass fiber reinforced plastic composite materials.
Through the arrangement, moment balance can be realized by adopting the wind vane blades and the wind vane posts with different densities, and compared with the wind vane blades and the wind vane posts which all adopt the same material, the wind vane blades and the wind vane posts have smaller volumes.
Furthermore, the windward end face of the weathervaning rod adopts a hemispherical shape.
Furthermore, the total pressure conduit and the static pressure conduit are both silica gel hoses.
Through above-mentioned setting, adopt the silica gel hose can be crooked wantonly, easily avoid intraductal obstacle, it is convenient to arrange.
Compared with the prior art, the beneficial effect of this scheme:
The measuring range of the scheme reaches 100 degrees, and the measuring capability is far more than the traditional measuring range; by adopting the photoelectric absolute angle encoder as the angle sensor, the defect that the traditional Hall angle sensor is easily interfered by a magnetic field is overcome, and the measuring range and the measuring precision are improved; by adopting the self-balancing type wind vane, the counterweight is omitted, and the influence of airframe airflow is reduced.
Drawings
FIG. 1 is a schematic diagram of a weathervaning sensor for measuring pneumatic data according to the present invention;
FIG. 2 is a cross-sectional view of a hollow speed tube of the present invention;
FIG. 3 is a cross-sectional view of A-A of FIG. 2;
FIG. 4 is a schematic view of the structure of the label assembly of the present invention;
FIG. 5 is a schematic view of the construction of the mounting position of the total pressure tube head of the present invention;
FIG. 6 is a schematic view of the structure of the present invention in its mounted position in a landmark assembly.
Detailed Description
The invention is described in further detail below by way of specific embodiments:
Reference numerals in the drawings of the specification include: airspeed tube assembly 10, vane assembly 20, front tube 11, rear tube 12, first total pressure tube head 13, second total pressure tube head 14, third total pressure tube head 15, total pressure conduit 16, static pressure conduit 17, angle sensor 21, vane shaft 22, vane rod 23, vane blade 24.
Examples
As shown in fig. 1: a vane sensor for measuring pneumatic data comprising a pitot tube assembly 10 and two sets of vane assemblies 20;
As shown in fig. 2, 3 and 5, the pitot tube assembly 10 includes a front tube 11, a rear tube 12, a first total pressure tube head 13, a second total pressure tube head 14, a third total pressure tube head 15, a total pressure conduit 16 and a static pressure conduit 17, wherein the front tube 11 and the rear tube 12 are fixedly connected, four static pressure holes are symmetrically opened on the tube wall of the rear tube 12, an included angle between hole axes of two static pressure holes located at the upper side is 38 °, an included angle between hole axes of two static pressure holes located at the upper side is 43 °, one end of the static pressure conduit 17 is mounted on the static pressure holes, and the other end of the static pressure conduit 17 passes through the right end of the rear tube 12. The first total pressure pipe head 13, the second total pressure pipe head 14 and the third total pressure pipe head 15 are all arranged in the front pipe 11, the installation position of the first total pressure pipe head 13 coincides with the axis of the front pipe 11, the installation position of the second total pressure pipe head 14 forms an included angle of 40 degrees with the installation position of the first total pressure pipe head 13, and the installation position of the third total pressure pipe head 15 forms an included angle of 40 degrees with the installation position of the second total pressure pipe head 14; the ends of the first total pressure pipe head 13, the second total pressure pipe head 14 and the third total pressure pipe head 15 are connected with total pressure pipes 16, and the right end of each total pressure pipe 16 penetrates out of the right end of the rear pipe 12. Each of the total pressure conduit 16 and the static pressure conduit 17 employs a silicone hose.
As shown in fig. 4 and 6, each set of the vane assembly 20 includes an angle sensor 21, a vane rotating shaft 22, a vane rod 23 and a vane blade 24, and each angle sensor 21 adopts a photoelectric absolute angle encoder, and each photoelectric absolute angle encoder measures each scribing line of a photoelectric encoding disc in the rotating process to obtain a unique code, and then calculates a rotating angle, thereby overcoming the defect that the traditional hall angle sensor is easily interfered by a magnetic field, and being beneficial to improving the measuring range and the measuring precision. Any angle sensor 21 is installed on the horizontal side of the front pipe 11, another angle sensor 21 is installed on the obliquely lower direction of the front pipe 11 and forms an included angle of 45 degrees with the axis of the front pipe 11, a lead of the angle sensor 21 penetrates through the rear pipe 12, a transverse hole is formed in the top of the wind vane rotating shaft 22, a vertical hole is formed in the bottom of the wind vane rotating shaft, a rotating shaft of the angle sensor 21 penetrates into the vertical hole of the wind vane rotating shaft 22, screws are jointly penetrated through the rotating shaft of the angle sensor 21 and the wind vane rotating shaft 22, a wind vane rod 23 penetrates into the transverse hole of the wind vane rotating shaft 22 and is fixedly glued with the wind vane rod 23, and the windward end face of the wind vane rod 23 is hemispherical, so that air resistance interference is reduced. The vane blade 24 is provided at one end of the vane lever 23. When the wind vane assembly 20 works, the wind vane blades 24, the wind vane rods 23, the wind vane rotating shaft 22 and the rotating shaft of the angle sensor 21 are fixedly connected into a whole. The vane 24 is made of glass fiber reinforced plastic composite materials with small density, the vane rod 23 is made of stainless steel materials with large density, the vane 24 and the vane rod 23 with different densities are adopted to achieve the self-balancing effect, and the pneumatic center of the vane is adjusted to the transverse hole, so that the radial moment of the vane is small, and the vane is suitable for measuring the attack angle and the sideslip angle in a low-speed state.
In the working process of the scheme, the wind vane sensor is arranged right in front of an airplane, and the airspeed tube assembly 10 is parallel to the axis direction of the airplane body and points forwards; the front-facing side weathervane assembly 20 measures angle of attack data and the rear-facing obliquely downward weathervane assembly 20 measures sideslip angle data; the wind vane sensor is far away from the surface of the airplane body, is slightly influenced by the airflow on the surface of the airplane, and can accurately output the measurement data of the attack angle and the sideslip angle.
When the centerline of the weathervaning blade 24 is parallel to the airflow direction, i.e., no angle of attack or sideslip angle is produced, no moment is produced by aerodynamic forces and the weathervaning blade 24 does not rotate. When the model aircraft flies at a certain attack angle or sideslip angle, because the aerodynamic force borne by the vane blades 24 generates moment, the vane blades 24 rotate to eliminate the attack angle of the vane itself until the central line of the vane blades 24 is consistent with the airflow direction, and at the moment, the included angle between the vane blades 24 and the axis of the aircraft body is equal to the attack angle or sideslip angle of the model aircraft. The vane blades 24 deflect to drive the vane rotating shaft 22 to rotate, the rotating angle of the vane rotating shaft 22 is directly read by the angle sensor 21, and then the angle of attack or sideslip angle data is output outwards through system calculation.
The total pressure conduit 16 and the static pressure conduit 17 led out from the airspeed tube assembly 10 are respectively connected with an air pressure sensor, the total pressure and the static pressure of a flow field are read, and the flying speed can be obtained by using a Bernoulli equation; the attack angle is within a range of +/-20 degrees, and the data of the air pressure sensor connected with the first total pressure pipe head 13 are read; the attack angle is in the range of 20-60 degrees, and the data of the air pressure sensor connected with the second total pressure pipe head 14 is read; the attack angle is in the range of 60-100 degrees, and the data of the air pressure sensor connected with the third total pressure pipe head 15 is read.
The foregoing is merely exemplary of the present application and the details of construction and/or the general knowledge of the structures and/or characteristics of the present application as it is known in the art will not be described in any detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (6)
1. A weathervaning sensor for measuring pneumatic data, characterized by: comprises a airspeed tube assembly (10) and two sets of weathervane assemblies (20);
The airspeed head assembly (10) comprises a front pipe (11), a rear pipe (12), a first total pressure pipe head (13), a second total pressure pipe head (14), a third total pressure pipe head (15), a total pressure pipe (16) and a static pressure pipe (17), wherein the front pipe (11) and the rear pipe (12) are fixedly connected, the first total pressure pipe head (13) coincides with the axis of the front pipe (11), the second total pressure pipe head (14) and the first total pressure pipe head (13) form an included angle of 40 degrees, and the third total pressure pipe head (15) and the second total pressure pipe head (14) form an included angle of 40 degrees; the first total pressure pipe head (13), the second total pressure pipe head (14) and the third total pressure pipe head (15) are respectively connected with a total pressure pipe (16), and the other end of each total pressure pipe (16) penetrates out of the rear pipe (12); the static pressure conduit (17) penetrates the rear pipe (12);
Each set of the wind vane assembly (20) comprises an angle sensor (21), a wind vane rotating shaft (22), a wind vane rod (23) and wind vane blades (24), wherein any one of the angle sensors (21) is arranged on the horizontal side surface of the front pipe (11), the other angle sensor is arranged on the inclined lower direction which forms an included angle of 45 degrees with the axis of the front pipe (11), a lead wire of the angle sensor (21) passes through the rear pipe (12), the other end of the angle sensor (21) is detachably connected with one end of the wind vane rotating shaft (22), and the wind vane rod (23) penetrates through the other end of the wind vane rotating shaft (22); the vane blade (24) is arranged at one end of the vane rod (23).
2. A weathervaning sensor for measuring pneumatic data according to claim 1, characterized in that: the angle sensor (21) adopts a photoelectric absolute angle encoder.
3. A weathervaning sensor for measuring pneumatic data according to claim 1, characterized in that: four static pressure holes are symmetrically formed in the pipe wall of the rear pipe (12), an included angle between the axes of the two static pressure holes on the upper side is 38 degrees, and an included angle between the axes of the two static pressure holes on the upper side is 43 degrees.
4. A weathervaning sensor for measuring pneumatic data according to claim 1, characterized in that: the vane rod (23) is made of stainless steel materials, and the vane blade (24) is made of glass fiber reinforced plastic composite materials.
5. A weathervaning sensor for measuring pneumatic data according to claim 1, characterized in that: the windward end surface of the wind vane rod (23) adopts a hemispherical shape.
6. A weathervaning sensor for measuring pneumatic data according to claim 1, characterized in that: and the total pressure conduit (16) and the static pressure conduit (17) are both made of silica gel hoses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110671915.5A CN113419078B (en) | 2021-06-17 | 2021-06-17 | Wind vane type sensor for measuring pneumatic data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110671915.5A CN113419078B (en) | 2021-06-17 | 2021-06-17 | Wind vane type sensor for measuring pneumatic data |
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| Publication Number | Publication Date |
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| CN113419078A CN113419078A (en) | 2021-09-21 |
| CN113419078B true CN113419078B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110671915.5A Active CN113419078B (en) | 2021-06-17 | 2021-06-17 | Wind vane type sensor for measuring pneumatic data |
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|---|---|---|---|---|
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| CN213208992U (en) * | 2020-11-19 | 2021-05-14 | 四川探索者航空科技有限公司 | Multifunctional flight sensor |
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2021
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