CN114435626A - Infrared radiation thermal effect equivalent calibration platform for airplane test and calibration method - Google Patents
Infrared radiation thermal effect equivalent calibration platform for airplane test and calibration method Download PDFInfo
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- CN114435626A CN114435626A CN202210377110.4A CN202210377110A CN114435626A CN 114435626 A CN114435626 A CN 114435626A CN 202210377110 A CN202210377110 A CN 202210377110A CN 114435626 A CN114435626 A CN 114435626A
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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Abstract
The invention discloses an infrared radiation thermal effect equivalent calibration platform for aircraft testing and a calibration method, belonging to the technical field of aircraft testing, wherein the calibration platform comprises a telescopic upright post, a turntable positioned at the top end of the telescopic upright post, an infrared light source radiation platform and a full-spectrum light source radiation platform which are carried on the turntable; the calibration method comprises the following steps: s1, sample placement, S2, height fine adjustment, S3, irradiation test, S4 and data analysis. The infrared radiant heat effect equivalent calibration platform provided by the invention has the advantages that the spectral distribution and the irradiance uniformity meet the national standard requirements, the irradiation effective area is large, the radiation angle and height can be quickly adjusted, and the infrared radiant heat effect equivalent calibration platform is suitable for testing large airplanes; the calibration method can be used for simultaneously carrying out thermal effect test on the full-spectrum lamp array and the infrared lamp array, effectively reducing the equivalent test period of the thermal effect, and obtaining the irradiance of the infrared light source of the sample full-spectrum lamp array at the same temperature rise through the same temperature rise contrast analysis.
Description
Technical Field
The invention relates to the technical field of airplane testing, in particular to an infrared radiation thermal effect equivalent calibration platform and a calibration method for airplane testing.
Background
The large-scale comprehensive climate environment laboratory can simulate various climate environments in the laboratory so as to meet the climate environment requirements of large-scale airplane tests, such as a rain environment, a snowing environment, a solar radiation simulation environment and the like. However, the existing solar radiation simulation device is usually designed in a fixed form in a laboratory, so that the device is also subjected to other severe weather environments such as severe rain, snow, strong wind and the like when a solar radiation test is not performed, and therefore, the solar radiation simulation device is designed to be movable and convenient to disassemble and transport, and many efforts are made by researchers at the present stage to overcome the defect.
The object of the solar radiation test in the large-scale comprehensive climate environment laboratory is usually a product or equipment with a large volume, and the radiation area is large and uneven, so that the radiation distance of the solar radiation simulation device is not convenient to adjust in the laboratory after the solar radiation simulation device is installed. At present, the domestic solar radiation simulation device is usually a special solar radiation environment box, the solar radiation simulation radiation area is not large, the radiation simulation device is mostly in an integrated fixed type, or a special movement mechanism is designed, the distance between the radiation simulation device and a radiation surface can be adjusted in a test, and parameters such as solar radiation simulation irradiance and uniformity are realized. Through the analysis, the conventional solar radiation simulation device cannot be completely suitable for solar radiation tests of large-scale comprehensive climate environment laboratories, so that a modular solar radiation simulation device is necessary to be designed, the parameter requirements of the solar radiation tests of the large-scale comprehensive climate environment laboratories are met, the irradiance can be adjusted without adjusting the radiation distance, and the solar radiation simulation device is easy to mount and dismount.
Disclosure of Invention
Aiming at the problems, the invention provides an infrared radiation thermal effect equivalent calibration platform for aircraft testing and a calibration method.
The technical scheme of the invention is as follows:
an infrared radiation thermal effect equivalent calibration platform for airplane testing comprises a telescopic upright post, a rotary table positioned at the top end of the telescopic upright post, an infrared light source radiation platform and a full-spectrum light source radiation platform, wherein the infrared light source radiation platform and the full-spectrum light source radiation platform are carried on the rotary table;
a V-shaped rod is fixedly connected above the turntable through a connecting rod, a supporting rod is fixedly arranged below two tail ends of the V-shaped rod respectively, the bottoms of the two supporting rods are fixedly connected with a hollow fixed cylinder, two ends of the fixed cylinder are rotatably connected with a rotating shaft respectively, the lower part of each rotating shaft is fixedly connected with a connecting block, and the initial positions of the infrared light source radiation platform and the full-spectrum light source radiation platform are positioned outside the two tail ends of the V-shaped rod respectively;
the infrared light source radiation platform comprises a first fixing block and 4 infrared radiation arms fixedly connected to one side, far away from the V-shaped rod, of the first fixing block, the 4 infrared radiation arms are arranged at equal intervals, and are sequentially a first infrared radiation arm, a second infrared radiation arm, a third infrared radiation arm and a fourth infrared radiation arm from front to back, a first groove is formed in the middle of the first fixing block, two connecting blocks located on one side of the infrared light source radiation platform are connected with the first fixing block and correspondingly located on two sides of the first groove, and a plurality of infrared light source grooves used for containing infrared radiation light sources are formed in the lower surfaces of the 4 infrared radiation arms;
the full-spectrum light source radiation platform comprises a second fixed block and 3 full-spectrum radiation arms fixedly connected to the same side of the second fixed block, the 3 full-spectrum radiation arms are arranged at equal intervals and sequentially comprise a first full-spectrum radiation arm, a second full-spectrum radiation arm and a third full-spectrum radiation arm from front to back, a second groove is formed in the middle of the second fixed block, two connecting blocks located on one side of the full-spectrum light source radiation platform are connected with the second fixed block and correspondingly located on two sides of the second groove, and a plurality of full-spectrum light source grooves used for containing full-spectrum radiation light sources are formed in the lower surfaces of the 3 full-spectrum radiation arms;
elastic water bag groups used for cooling 4 infrared radiation arms and protecting the first full-spectrum radiation arm and the third full-spectrum radiation arm are arranged between the first infrared radiation arm and the second infrared radiation arm and between the third infrared radiation arm and the fourth infrared radiation arm, and elastic air bags used for protecting the second full-spectrum radiation arm are arranged between the second infrared radiation arm and the third infrared radiation arm.
Furthermore, the turntable is driven to rotate by a driving motor fixedly arranged on the upper part of the center of the turntable, a rotating motor is arranged inside the fixed cylinder, and output shafts at two ends of the rotating motor are respectively connected with rotating shafts on two sides of the fixed cylinder in a rotating mode. The rotating shaft is driven to rotate by the motor so as to drive the two radiation platforms to rotate to adjust the irradiation angle.
Furthermore, the sections of the fixed cylinder and the rotating shaft are both circular and have the same sectional area. The rotating shaft is ensured not to be interfered by external factors when rotating.
Furthermore, each infrared radiation arm is provided with 8 infrared light source grooves, all the infrared light source grooves on the same infrared radiation arm are arranged at equal intervals, each full-spectrum radiation arm is provided with 6 full-spectrum light source grooves, all the full-spectrum light source grooves on the same full-spectrum radiation arm are arranged at equal intervals, and the initial positions of the infrared light source radiation platform and the full-spectrum light source radiation platform are 5-10m apart. The mutual interference of the two radiation platforms during work is prevented.
Furthermore, the elastic water bag group comprises a first water bag and a second water bag which are arranged side by side from left to right, a partition plate is arranged between the first water bag and the second water bag, the first water bag and the second water bag are fixedly connected with the upper portion of the partition plate, a baffle is arranged below the first water bag and the second water bag, a connecting plate is fixedly connected with the front end and the rear end of the baffle, the two sides of the connecting plate are fixedly connected with the end portions of two infrared radiation arms adjacent to the two sides of the connecting plate respectively, the partition plate penetrates through a sliding groove formed in the middle of the baffle and can slide up and down along the sliding groove, a limiting block is arranged at the bottom of the partition plate, a limiting groove in butt joint with the limiting block is formed in the bottom of the baffle, a plurality of elastic memory rubber strips crossing the sliding groove are arranged at the bottom of the baffle and used for resetting of the partition plate, a magnetic strip is respectively arranged at one end, far away from the bottom of the first water bag and the second water bag, a magnetic strip is arranged at the lower portion of the first infrared radiation arm, the second infrared radiation arm, a lower portion and a third infrared radiation arm, And a magnetic plate correspondingly connected with the magnetic strip is arranged below the fourth infrared radiation arm, and the width of the elastic water bag group is the same as that of each full-spectrum radiation arm. Can cool down the infrared radiation arm through setting up of elasticity water pocket group, prevent that the high temperature from causing the damage to the device, can make full gloss register for easy reference radiation arm inlay simultaneously again and establish in elasticity water pocket group, play the guard action to full gloss register for easy reference radiation arm, the elasticity water pocket group after receiving the extrusion can further protect the infrared radiation arm again, and convenient to use is functional strong.
Furthermore, the first water bag and the second water bag are filled with antifreeze, 5 elastic memory rubber strips are arranged on each baffle, and the elastic memory rubber strips are arranged at equal intervals. The diaphragm can be reset through elasticity and a rubber strip.
Further, the tail ends of the second infrared radiation arm and the third infrared radiation arm are respectively provided with an air pump, the two air pumps are respectively provided with 3 air outlet pipes, the first air outlet pipes are sequentially used for supplying air to the elastic air bags, the second air outlet pipes and the third air outlet pipes are used for sweeping accumulated snow, the first air outlet pipes of the two air pumps are respectively connected with the tail ends of the elastic air bags, the outlet of the second air outlet pipe of the air pump on the second infrared radiation arm faces the lower portion of the second infrared radiation arm, the outlet of the second air outlet pipe of the air pump on the third infrared radiation arm faces the lower portion of the third infrared radiation arm, the outlet of the third air outlet pipe of the air pump on the second infrared radiation arm faces the lower portion of the first infrared radiation arm, and the outlet of the third air outlet pipe of the air pump on the third infrared radiation arm faces the lower portion of the fourth infrared radiation arm. Can sweep remaining snow ponding through air pump and outlet duct, prevent that ponding snow from getting into inside the radiation unit.
Furthermore, a pressure sensor is arranged inside the elastic air bag and electrically connected with a controller positioned at the bottom of the elastic air bag, the controller is electrically connected with the two air pumps and used for starting and stopping the air pumps, and the two air pumps are respectively positioned in gaps among the first full-spectrum radiation arm, the second full-spectrum radiation arm and the third full-spectrum radiation arm after the rotating shaft rotates 180 degrees. The pressure sensor senses the contact pressure of the second full-spectrum radiation arm and the air bag, so that the air pump is automatically started through the controller to complete the inflation of the air bag, and the second full-spectrum radiation arm is protected.
The invention also provides a calibration method of the infrared radiation thermal effect equivalent calibration platform for the airplane test, which comprises the following steps:
s1, sample setting: two identical samples are taken, a thermocouple for testing the temperature of the samples is respectively adhered to the centers of the non-irradiation surfaces of the samples, the height of a telescopic upright post is adjusted to enable an infrared light source radiation platform and a full-spectrum light source radiation platform to be 4m away from the ground, the interval between the infrared light source radiation platform and the full-spectrum light source radiation platform is 5-10m, and mutual interference during testing is avoided;
s2, height fine adjustment: respectively placing two groups of samples under an infrared light source radiation platform and a full-spectrum light source radiation platform, adjusting a rotating shaft to enable the centers of the infrared light source radiation platform and the full-spectrum light source radiation platform to be respectively on the same straight line with the center of the corresponding sample, wherein the radiation distance from the infrared light source and the full-spectrum light source to the sample is 3.5-3.8m, and simultaneously installing an irradiator around the sample, wherein the irradiator is as high as the sample;
s3, irradiation test: adjusting the irradiance of the infrared light source radiation platform and the full-spectrum light source radiation platform reaching the surface of the sample, wherein the irradiance is 190W/m2-1120W/m2Keeping for 1h, recording the temperature of the sample and the temperature of the surrounding environment of the sample, and storing the temperature of the sample and the temperature of the surrounding environment of the sample as test data;
s4, data analysis: and respectively obtaining the sample temperature increase amplitude of the infrared light source radiation platform and the full-spectrum light source radiation platform under different irradiance through the test data obtained in the step S3, and carrying out temperature increase contrast analysis so as to obtain the infrared light source irradiance of the sample under the same temperature increase condition of the full-spectrum light array.
The beneficial effects of the invention are:
(1) the infrared radiation heat effect equivalent calibration platform can adjust the infrared light source and the full spectrum light source through the infrared light source radiation platform and the full spectrum light source radiation platform which are arranged in a matched mode, the spectral distribution and the irradiance uniformity meet the national standard requirements, the effective irradiation area is large, the radiation angle and the radiation height can be adjusted rapidly, and the infrared radiation heat effect equivalent calibration platform is suitable for testing of large airplanes.
(2) The infrared radiation heat effect equivalent calibration platform is provided with the elastic water bag group, the infrared radiation arm can be effectively cooled through the antifreeze filled in the elastic water bag group, the infrared radiation arm shell is prevented from being damaged due to overhigh temperature, meanwhile, in the test process of a large aircraft, the simulation of severe weather such as rainfall, snowfall and the like is usually required, and the infrared radiation heat effect test is immediately carried out after the severe weather simulation is finished, so that the infrared light source radiation platform and the full spectrum light source radiation platform need to be well protected, the elastic water bag group can enable the full spectrum radiation arm to be embedded in the elastic water bag group to play a role in protecting the full spectrum radiation arm, the infrared radiation arm can be further covered and protected through butt joint of a magnetic strip and a magnetic plate after the extruded elastic water bag extends out, and the partition plate and the elastic water bag can be reset through elasticity and a rubber strip, convenient to use and functional strong.
(3) The infrared radiation thermal effect equivalent calibration platform can protect the full-spectrum radiation arm through the arrangement of the elastic air bag, meanwhile, the arrangement of the air pump can not only supply air for the elastic air bag, but also sweep the surface of the radiation arm which just performs rainfall and snowfall simulation, so that accumulated snow and accumulated water are prevented from remaining, the radiation simulation test can be immediately started after the rainfall and snowfall simulation is finished, automatic control can be realized through the arrangement of the pressure sensor and the controller, and the working time is saved.
(4) The infrared radiation heat effect equivalent calibration method can simultaneously carry out heat effect test on the full-spectrum lamp array and the infrared lamp array, effectively reduces the heat effect equivalent test period, and obtains the irradiance of the infrared light source of the sample full-spectrum lamp array at the same temperature rise through temperature rise contrast analysis.
Drawings
FIG. 1 is a flow chart of the infrared radiation thermal effect equivalent calibration method of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the infrared radiation thermal effect equivalent calibration platform of the present invention;
FIG. 3 is a schematic bottom structure diagram of the infrared radiation thermal effect equivalent calibration platform of the present invention;
FIG. 4 is a schematic structural diagram of the infrared radiation platform and the full spectrum radiation platform of the equivalent calibration platform for infrared radiation thermal effect of the present invention after they are stacked;
FIG. 5 is a schematic structural diagram of an elastic water bag set of the infrared radiation thermal effect equivalent calibration platform of the invention;
FIG. 6 is a schematic structural diagram of the infrared radiation thermal effect equivalent calibration platform of the present invention after the elastic water bag group is extruded;
FIG. 7 is a schematic diagram of the internal structure of the fixed cylinder of the infrared radiation thermal effect equivalent calibration platform of the present invention;
FIG. 8 is a schematic diagram of the internal structure of the air bag of the infrared radiation thermal effect equivalent calibration platform of the invention;
fig. 9 is a top view of the infrared radiant thermal effect equivalent calibration platform of the present invention.
Wherein, 1-telescopic upright post, 2-rotary table, 21-connecting rod, 22-V-shaped rod, 23-support rod, 24-driving motor, 3-infrared source radiation platform, 31-first infrared radiation arm, 32-second infrared radiation arm, 33-third infrared radiation arm, 34-fourth infrared radiation arm, 35-first fixed block, 351-first groove, 36-infrared source groove, 4-full spectrum source radiation platform, 41-first full spectrum radiation arm, 42-second full spectrum radiation arm, 43-third full spectrum radiation arm, 44-second fixed block, 441-second groove, 45-full spectrum source groove, 5-fixed cylinder, 51-rotary shaft, 52-connecting block, 53-rotary motor, 6-elastic water bag group, 61-a first water bag, 62-a second water bag, 63-a partition plate, 631-a limiting block, 64-a baffle plate, 641-a sliding groove, 642-a limiting groove, 65-a connecting plate, 66-an elastic memory rubber strip, 67-a magnetic strip, 68-a magnetic plate, 7-an elastic air bag, 71-a pressure sensor, 72-a controller, 8-an air pump, 81-a first air outlet pipe, 82-a second air outlet pipe and 83-a third air outlet pipe.
Detailed Description
Example 1
As shown in fig. 2, an infrared radiant heat effect equivalent calibration platform for aircraft testing comprises a telescopic upright post 1, a rotary table 2 positioned at the top end of the telescopic upright post 1, an infrared light source radiation platform 3 and a full-spectrum light source radiation platform 4 which are carried on the rotary table 2;
as shown in the figures 2 and 3, the above-mentioned figures, 7, a V-shaped rod 22 is fixedly connected above the turntable 2 through a connecting rod 21, a supporting rod 23 is fixedly arranged below each of two ends of the V-shaped rod 22, the bottoms of the two supporting rods 23 are fixedly connected with a hollow fixed cylinder 5, two ends of the fixed cylinder 5 are respectively and rotatably connected with a rotating shaft 51, the lower part of each rotating shaft 51 is fixedly connected with a connecting block 52, the initial positions of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 are respectively located at the outer sides of the two ends of the V-shaped rod 22, the turntable 2 is driven to rotate through a driving motor 24 fixedly arranged at the upper part of the center of the turntable 2, a rotating motor 53 is arranged inside the fixed cylinder 5, output shafts at two ends of the rotating motor 53 are respectively and rotatably connected with the rotating shafts 51 at two sides of the fixed cylinder 5, the sections of the fixed cylinder 5 and the rotating shafts 51 are both circular and have the same sectional area, and the driving motor 24 and the rotating motor 53 are both commercially available motors;
as shown in fig. 2 and 3, the infrared light source radiation platform 3 includes a first fixed block 35 and 4 infrared radiation arms fixedly connected to one side of the first fixed block 35, which is far away from the V-shaped rod, the 4 infrared radiation arms are arranged at equal intervals, and are sequentially a first infrared radiation arm 31, a second infrared radiation arm 32, a third infrared radiation arm 33 and a fourth infrared radiation arm 34 from front to back, a first groove 351 is formed in the middle of the first fixed block 35, two connection blocks 52 located at one side of the infrared light source radiation platform 3 are both connected with the first fixed block 35, the two connection blocks 52 are correspondingly located at both sides of the first groove 351, a plurality of infrared light source grooves 36 for accommodating infrared radiation light sources are formed in the lower surfaces of the 4 infrared radiation arms, and each infrared radiation arm is provided with 8 infrared light source grooves 36;
as shown in fig. 2, 3, and 9, the full spectrum light source radiation platform 4 includes a second fixed block 44 and 3 full spectrum radiation arms fixedly connected to the same side of the second fixed block 44, the 3 full spectrum radiation arms are arranged at equal intervals, the first full spectrum radiation arm 41, the second full spectrum radiation arm 42, and the third full spectrum radiation arm 43 are sequentially arranged from front to back, a second groove 441 is disposed in the middle of the second fixed block 44, two connection blocks 52 located at one side of the full spectrum light source radiation platform 4 are both connected to the second fixed block 44, the two connection blocks 52 are correspondingly located at both sides of the second groove 441, a plurality of full spectrum light source grooves 45 for accommodating full spectrum radiation light sources are disposed on the lower surface of the 3 full spectrum radiation arms, and the infrared light source grooves 36 on the same infrared radiation arm are arranged at equal intervals, each full spectrum radiation arm is provided with 6 full spectrum light source grooves 45, all full-spectrum light source grooves 45 on the same full-spectrum radiation arm are arranged at equal intervals, and the initial positions of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 are 8m apart;
as shown in fig. 2-6, an elastic water bag set 6 for cooling 4 infrared radiation arms and protecting the first full spectrum radiation arm 41 and the third full spectrum radiation arm 43 is disposed between the first infrared radiation arm 31 and the second infrared radiation arm 32, and between the third infrared radiation arm 33 and the fourth infrared radiation arm 34, the elastic water bag set 6 includes a first water bag 61 and a second water bag 62 disposed side by side left and right, a partition 63 is disposed between the first water bag 61 and the second water bag 62, the first water bag 61 and the second water bag 62 are both fixedly connected with the upper portion of the partition 63, a baffle 64 is disposed below the first water bag 61 and the second water bag 62, a connecting plate 65 is fixedly connected with both front and rear ends of the baffle 64, both sides of the connecting plate 65 are respectively fixedly connected with the end portions of two adjacent infrared radiation arms located on both sides thereof, the partition 63 penetrates through a chute 641 disposed in the middle portion of the baffle 64, and the baffle 63 and the baffle 64 are connected with the baffle 641 in a sliding manner up and down, the bottom of the partition plate 63 is provided with a limit block 631, the bottom of the partition plate 64 is provided with a limit groove 642 butted with the limit block 631, the bottom of the partition plate 64 is provided with 5 elastic memory rubber strips 66 crossing the slide groove 641, the elastic memory rubber strips 66 are used for resetting the partition plate 63, the ends of the bottoms of the first water bag 61 and the second water bag 62, which are far away from each other, are respectively provided with a magnetic strip 67, the magnetic plates 68 correspondingly matched and connected with the magnetic strips 67 are respectively arranged below the first infrared radiation arm 31 and the second infrared radiation arm 32 and below the third infrared radiation arm 33 and the fourth infrared radiation arm 34, the width of the elastic water bag set 6 is the same as that of each full spectrum radiation arm, the first water bag 61 and the second water bag 62 are filled with antifreeze solution, and the elastic memory rubber strips 66 are arranged at equal intervals;
as shown in fig. 2, 3, 8, and 9, an elastic air bag 7 for protecting the second full-spectrum radiation arm 42 is disposed between the second infrared radiation arm 32 and the third infrared radiation arm 33, an air pump 8 is disposed at each of the ends of the second infrared radiation arm 32 and the third infrared radiation arm 33, 3 air outlet pipes are disposed on each of the two air pumps 8, a first air outlet pipe 81 for supplying air to the elastic air bag 7, a second air outlet pipe 82 for purging accumulated snow, and a third air outlet pipe 83 are sequentially disposed at each of the ends of the second infrared radiation arm 32 and the third infrared radiation arm 33, the first air outlet pipes 81 of the two air pumps 8 are connected to the ends of the elastic air bags 7, the outlet of the second air outlet pipe 82 of the air pump 8 disposed on the second infrared radiation arm 32 faces below the second infrared radiation arm 32, the outlet of the second air outlet pipe 82 of the air pump 8 disposed on the third infrared radiation arm 33 faces below the third infrared radiation arm 33, the outlet of the air outlet pipe 83 of the air pump 8 disposed on the second infrared radiation arm 32 faces below the first infrared radiation arm 31, the outlet of the third air outlet pipe 83 of the air pump 8 on the third infrared radiation arm 33 faces the lower part of the fourth infrared radiation arm 34, the pressure sensor 71 is arranged inside the elastic air bag 7, the pressure sensor 71 is electrically connected with the controller 72 at the bottom of the elastic air bag 7, the controller 72 is electrically connected with the two air pumps 8 and used for starting and stopping the air pump 8, the two air pumps 8 are respectively positioned in gaps between the first full-spectrum radiation arm 41 and the second full-spectrum radiation arm 42, and the second full-spectrum radiation arm 42 and the third full-spectrum radiation arm 43 after the rotating shaft 51 rotates 180 degrees, and the pressure sensor 71 and the controller 72 are both commercially available products.
As shown in fig. 1, the calibration method of the infrared radiant heat effect equivalent calibration platform for aircraft testing includes the following steps:
s1, sample setting: two identical samples are taken, a thermocouple for testing the temperature of the samples is respectively adhered to the centers of the non-irradiation surfaces of the samples, the height of the telescopic upright posts 1 is adjusted to enable the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 to be 4m away from the ground, the interval between the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 is 8m, and mutual interference during testing is avoided;
s2, height fine adjustment: respectively placing two groups of samples under an infrared light source radiation platform 3 and a full-spectrum light source radiation platform 4, adjusting a rotating shaft 51 to enable the centers of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 to be respectively on the same straight line with the corresponding sample centers, wherein the radiation distance from the infrared light source and the full-spectrum light source to the samples is 3.6m, and simultaneously installing an irradiator around the samples, wherein the irradiator is as high as the samples;
s3, irradiation test: adjusting infrared source radiation platform 3And the irradiance of the full-spectrum light source radiation platform 4 reaching the surface of the sample is 800W/m2Keeping for 1h, recording the temperature of the sample and the ambient temperature of the sample, and storing the temperature of the sample and the ambient temperature of the sample as test data;
s4, data analysis: the sample temperature rise amplitudes of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 under different irradiance are respectively obtained through the test data obtained in the step S3, temperature rise contrast analysis is carried out, and then the infrared light source irradiance of the sample under the condition that the full-spectrum light array is at the same temperature rise is obtained.
Example 2
This embodiment is substantially the same as embodiment 1, except that: the initial positions of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 are different from each other, and the initial positions of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 are 5m apart from each other.
Example 3
This embodiment is substantially the same as embodiment 1, except that: the initial positions of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 are different from each other, and the initial positions of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 are 10m apart from each other.
Example 4
This embodiment is substantially the same as embodiment 1, except that: the radiation distance from the light source to the sample is different in step S2.
S2, height fine adjustment: the two samples respectively correspond to the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4, the rotating shaft 51 is adjusted to enable the center of the radiation platform and the center of the sample to be on the same straight line, the radiation distance from the light source to the sample is 3.5m, and meanwhile, an irradiator is installed around the sample, and the irradiator is as high as the sample.
Example 5
This embodiment is substantially the same as embodiment 1, except that: the radiation distance from the light source to the sample is different in step S2.
S2, height fine adjustment: the two samples respectively correspond to the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4, the rotating shaft 51 is adjusted to enable the center of the radiation platform and the center of the sample to be on the same straight line, the radiation distance from the light source to the sample is 3.8m, and meanwhile, an irradiator is installed around the sample, and the irradiator is as high as the sample.
Example 6
This embodiment is substantially the same as embodiment 1, except that: the irradiance is different in step S3.
S3, irradiation test: respectively adjusting the irradiance of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 reaching the surface of the sample, wherein the irradiance is 190W/m2Keeping for 1h respectively, and recording the temperature of the sample under different irradiance and the ambient temperature of the sample.
Example 7
This embodiment is substantially the same as embodiment 1, except that: the irradiance is different in step S3.
S3, irradiation test: respectively adjusting the irradiance of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 reaching the surface of the sample, wherein the irradiance is 1000W/m2Keeping for 1h respectively, and recording the temperature of the sample under different irradiance and the ambient temperature of the sample.
Example 8
This embodiment is substantially the same as embodiment 1, except that: the irradiance is different in step S3.
S3, irradiation test: respectively adjusting the irradiance of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 reaching the surface of the sample, wherein the irradiance is 1120W/m2Keeping for 1h respectively, and recording the temperature of the sample under different irradiance and the ambient temperature of the sample.
The working principle is as follows: the working principle of the infrared radiant thermal effect equivalent calibration platform of the present invention will be briefly described with reference to the drawings and steps S1-S4 of embodiment 1.
When the experiment device is used, after steps S1-S4 are completed, a rainfall and snowfall simulation experiment of a large aircraft needs to be performed, before appropriate protection measures need to be performed on the infrared light source radiation platform 3 and the full spectrum light source radiation platform 4, the driving motor 24 is started to drive the rotating shaft 51 to rotate so as to drive the infrared light source radiation platform 3 to rotate 180 ° through the connecting block, then the full spectrum light source radiation platform 4 is rotated 180 ° in the same manner, the first full spectrum radiation arm 41 and the third full spectrum radiation arm 43 are butted with the elastic water bag set 6, during the butting process, the first water bag 61 and the second water bag 62 are squeezed, the partition plate 63 slides downwards along the sliding groove 641, the first water bag 61 and the second water bag 62 push the magnetic strip 67 to be in contact with the magnetic plate 68, so that the first water bag 61 and the second water bag 62 cover the surface of the infrared radiation arm and also cover the surface of the full spectrum radiation arm, the damage to the radiation light source caused by water inflow inside the infrared radiation arm and the full-spectrum radiation arm is avoided;
when the second full-spectrum radiation arm 42 is in contact with the elastic airbag 7, the pressure sensor 71 is squeezed, so that the controller 72 receives an electric signal, the air pump 8 is controlled to be started, the elastic airbag 7 is inflated, and the surface of the second full-spectrum radiation arm 42 is sealed with the elastic airbag 7 to form a protection effect;
when the rainfall and snowfall simulation experiment needs to be immediately switched to carry out the infrared radiation simulation test, the air pump 8 is started to blow air to the second air outlet pipe 82 and the third air outlet pipe 83, accumulated snow on the surfaces of the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 is swept, after the accumulated snow is completely swept, the infrared light source radiation platform 3 and the full-spectrum light source radiation platform 4 are reset in the opposite mode, and the process of the steps S1-S4 is repeated.
Examples of the experiments
The calibration method of the present invention is further described below by specific simulation tests, taking the calibration methods and data of examples 1, 7, and 8 as examples.
The test object was an aircraft aluminum plate, and the test results are shown in table 1.
TABLE 1 temperatures of samples under two different irradiations
| Irradiance W/m2 | Full spectrum deg.C | Infrared Spectrum ℃ C |
| 800 | 50 | 45 |
| 1000 | 56 | 48 |
| 1120 | 59 | 50 |
| 1450 | 63 | 56 |
| 1680 | 68 | 59 |
Under the test of the calibration platform and the calibration method, the temperature contrast of the same sample under two light source irradiances can be obtained through the table 1.
If the sample under infrared spectrum irradiation reaches the same temperature as the sample under full spectrum irradiation, the required irradiation intensity is 1120W/m2、1450W/m2、1680W/m2。
Claims (9)
1. An infrared radiation thermal effect equivalent calibration platform for aircraft testing is characterized by comprising a telescopic upright post (1), a rotary table (2) positioned at the top end of the telescopic upright post (1), an infrared light source radiation platform (3) and a full-spectrum light source radiation platform (4) which are carried on the rotary table (2);
a V-shaped rod (22) is fixedly connected above the turntable (2) through a connecting rod (21), a supporting rod (23) is fixedly arranged below each of two tail ends of the V-shaped rod (22), the bottoms of the two supporting rods (23) are fixedly connected with a hollow fixed cylinder (5), two ends of the fixed cylinder (5) are respectively and rotatably connected with a rotating shaft (51), the lower part of each rotating shaft (51) is fixedly connected with a connecting block (52), and the initial positions of the infrared light source radiation platform (3) and the full-spectrum light source radiation platform (4) are respectively positioned outside each of the two tail ends of the V-shaped rod (22);
the infrared light source radiation platform (3) comprises a first fixing block (35) and 4 infrared radiation arms fixedly connected to the first fixing block (35) and far away from one side of the V-shaped rod (22), wherein the 4 infrared radiation arms are arranged at equal intervals, a first infrared radiation arm (31), a second infrared radiation arm (32), a third infrared radiation arm (33) and a fourth infrared radiation arm (34) are sequentially arranged from front to back, a first groove (351) is formed in the middle of the first fixing block (35), two connecting blocks (52) located on one side of the infrared light source radiation platform (3) are connected with the first fixing block (35), the two connecting blocks (52) are correspondingly located on two sides of the first groove (351), and a plurality of infrared light source grooves (36) used for containing infrared radiation light sources are formed in the lower surfaces of the 4 infrared radiation arms;
the full-spectrum light source radiation platform (4) comprises a second fixed block (44) and 3 full-spectrum radiation arms fixedly connected to the same side of the second fixed block (44), wherein the 3 full-spectrum radiation arms are arranged at equal intervals, a first full-spectrum radiation arm (41), a second full-spectrum radiation arm (42) and a third full-spectrum radiation arm (43) are sequentially arranged from front to back, a second groove (441) is formed in the middle of the second fixed block (44), two connecting blocks (52) located on one side of the full-spectrum light source radiation platform (4) are connected with the second fixed block (44), the two connecting blocks (52) are correspondingly located on two sides of the second groove (441), and a plurality of full-spectrum light source grooves (45) used for containing full-spectrum radiation light sources are formed in the lower surfaces of the 3 full-spectrum radiation arms;
between first infrared radiation arm (31) and second infrared radiation arm (32) all be equipped with between third infrared radiation arm (33) and fourth infrared radiation arm (34) and be used for 4 infrared radiation arm cooling and protect elastic water pocket group (6) of first full spectrum radiation arm (41) and third full spectrum radiation arm (43), be equipped with between second infrared radiation arm (32) and third infrared radiation arm (33) and be used for protecting elastic gasbag (7) of second full spectrum radiation arm (42).
2. The platform for equivalent calibration of infrared radiant heat effect for aircraft testing as recited in claim 1, wherein the turntable (2) is driven to rotate by a driving motor (24) fixedly arranged at the upper part of the center of the turntable, a rotating motor (53) is arranged inside the fixed cylinder (5), and output shafts at two ends of the rotating motor (53) are respectively connected with rotating shafts (51) at two sides of the fixed cylinder (5) in a rotating manner.
3. The platform for equivalent calibration of infrared radiant thermal effect for aircraft testing as recited in claim 1, wherein the cross-sections of the fixed cylinder (5) and the rotating shaft (51) are both circular and have the same cross-sectional area.
4. The equivalent calibration platform for the thermal effect of infrared radiation for aircraft testing as recited in claim 1, wherein each infrared radiation arm is provided with 8 infrared light source slots (36), each infrared light source slot (36) on the same infrared radiation arm is arranged at equal intervals, each full spectrum radiation arm is provided with 6 full spectrum light source slots (45), each full spectrum light source slot (45) on the same full spectrum radiation arm is arranged at equal intervals, and the initial positions of the infrared light source radiation platform (3) and the full spectrum light source radiation platform (4) are 5-10m apart.
5. The infrared radiation heat effect equivalent calibration platform for the aircraft test as recited in claim 1, wherein the elastic water bag set (6) comprises a first water bag (61) and a second water bag (62) which are arranged side by side from left to right, a partition plate (63) is arranged between the first water bag (61) and the second water bag (62), the first water bag (61) and the second water bag (62) are both fixedly connected with the upper part of the partition plate (63), a baffle plate (64) is arranged below the first water bag (61) and the second water bag (62), both front and rear ends of the baffle plate (64) are both fixedly connected with a connecting plate (65), both sides of the connecting plate (65) are respectively fixedly connected with the end parts of two adjacent infrared radiation arms positioned at both sides thereof, the partition plate (63) penetrates through a chute (641) arranged in the middle part of the baffle plate (64), and the partition plate (63) can slide up and down along the chute (641), baffle (63) bottom is equipped with stopper (631), baffle (64) bottom be equipped with spacing groove (642) of stopper (631) butt joint, baffle (64) bottom is equipped with a plurality of spanes the elasticity memory rubber strip (66) of spout (641), elasticity memory rubber strip (66) are used for making baffle (63) reset, and the one end of keeping away from each other in first water pocket (61) and second water pocket (62) bottom respectively is equipped with a magnetic stripe (67), the below of first infrared radiation arm (31), second infrared radiation arm (32) and the below of third infrared radiation arm (33), fourth infrared radiation arm (34) all be equipped with one with magnetic stripe (67) correspond the magnetic sheet (68) that connect, the width of elasticity water pocket group (6) is the same with the width of each full gloss register radiation arm.
6. The platform for equivalent calibration of infrared radiant thermal effect for aircraft testing as recited in claim 5, wherein the first water bag (61) and the second water bag (62) are filled with anti-freezing fluid, 5 elastic memory rubber strips (66) are arranged on each baffle (64), and the elastic memory rubber strips (66) are arranged at equal intervals.
7. The equivalent calibration platform for the infrared radiant heat effect for the aircraft test as recited in claim 1, wherein the ends of the second infrared radiation arm (32) and the third infrared radiation arm (33) are respectively provided with an air pump (8), two air pumps (8) are respectively provided with 3 air outlet pipes, a first air outlet pipe (81) for supplying air to the elastic air bag (7), a second air outlet pipe (82) for purging accumulated snow and a third air outlet pipe (83), the first air outlet pipes (81) of the two air pumps (8) are respectively connected with the ends of the elastic air bag (7), the outlet of the second air outlet pipe (82) of the air pump (8) on the second infrared radiation arm (32) faces below the second infrared radiation arm (32), the outlet of the second air outlet pipe (82) of the air pump (8) on the third infrared radiation arm (33) faces below the third infrared radiation arm (33), the outlet of a third air outlet pipe (83) of the air pump (8) positioned on the second infrared radiation arm (32) faces to the lower part of the first infrared radiation arm (31), and the outlet of a third air outlet pipe (83) of the air pump (8) positioned on the third infrared radiation arm (33) faces to the lower part of the fourth infrared radiation arm (34).
8. The equivalent calibration platform of infrared radiation thermal effect for aircraft test according to claim 7, characterized in that a pressure sensor (71) is arranged inside the elastic airbag (7), the pressure sensor (71) is electrically connected with a controller (72) located at the bottom of the elastic airbag (7), the controller (72) is electrically connected with two air pumps (8) for starting and stopping the air pumps (8), and the two air pumps (8) are respectively located in gaps between the first full spectrum radiation arm (41) and the second full spectrum radiation arm (42), and between the second full spectrum radiation arm (42) and the third full spectrum radiation arm (43) after the rotating shaft (51) rotates 180 degrees.
9. The calibration method for the infrared radiation thermal effect equivalent calibration platform for the aircraft test according to any one of claims 1 to 8, characterized by comprising the following steps:
s1, sample setting: two identical samples are taken, a thermocouple for testing the temperature of the samples is respectively adhered to the centers of the non-irradiation surfaces of the samples, the height of the telescopic upright post (1) is adjusted to enable the infrared light source radiation platform (3) and the full-spectrum light source radiation platform (4) to be 4m away from the ground, the interval between the infrared light source radiation platform (3) and the full-spectrum light source radiation platform (4) is 5-10m, and mutual interference during testing is avoided;
s2, height fine adjustment: respectively placing two groups of samples under an infrared light source radiation platform (3) and a full-spectrum light source radiation platform (4), adjusting a rotating shaft (51) to enable the centers of the infrared light source radiation platform (3) and the full-spectrum light source radiation platform (4) to be respectively on the same straight line with the corresponding sample centers, enabling the radiation distance from the infrared light source and the full-spectrum light source to the sample to be 3.5-3.8m, and meanwhile, installing an irradiator around the sample, wherein the irradiator has the same height with the sample;
s3, irradiation test: adjusting the irradiance of the infrared light source radiation platform (3) and the full-spectrum light source radiation platform (4) reaching the surface of the sample, wherein the irradiance is 190W/m2-1120W/m2Keeping for 1h, recording the temperature of the sample and the ambient temperature of the sample, and storing the temperature of the sample and the ambient temperature of the sample as test data;
s4, data analysis: and (5) respectively obtaining the sample temperature increase amplitude of the infrared light source radiation platform (3) and the full-spectrum light source radiation platform (4) under different irradiance through the test data obtained in the step (S3), and performing temperature increase contrast analysis to further obtain the infrared light source irradiance of the sample under the same temperature increase condition of the full-spectrum lamp array.
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