Helicopter rotor anti-icing and deicing test outdoor spraying tower device with adjustable spraying height

Abstract

The invention provides a helicopter rotor anti-icing and deicing test outdoor spraying tower device with the adjustable spraying height. The device comprises an upper rack, a lower rack, a fan array (3), a cloud and mist generating device (4), a jacking device (5) and a plurality of standard knots (6). Icing spraying tower equipment capable of meeting the requirements of ground tests and hovering tests of whole machine rotor anti-icing and deicing tests is established outdoors or in an indoor environment with a large enough height space, a spraying height adjustable device is designed, the requirements of different tonnages for the height of spraying mist in the ground tests and the hovering tests can be met, and the spraying height adjustable device is suitable for large-scale popularization and application. The spray-height-adjustable spray tower device for the anti-icing and deicing test of the rotor wing has the advantages that cloud and mist parameters can be adjusted, and cloud and mist can better progress into a test area by additionally arranging a cloud and mist conveying speed adjusting device.

Description

Technical Field

[0001] This invention belongs to the field of helicopter rotor anti-icing and de-icing testing and aviation equipment technology, specifically relating to an outdoor spraying tower device for helicopter rotor anti-icing and de-icing testing with adjustable spray height. Background Technology

[0002] When helicopters fly in icy weather conditions, supercooled water droplets in the air collide with the helicopter rotor and condense into ice, affecting the rotor's aerodynamic performance and flight safety. Directly conducting rotor anti-icing tests in an atmospheric icing environment is extremely risky and could endanger pilot safety. Therefore, ground-based rotor anti-icing tests are necessary to verify the functionality and ensure the rotor's anti-icing capabilities are intact.

[0003] Currently, domestic environmental testing laboratories can only meet the requirements for anti-icing and de-icing tests of the entire ground rotor, but cannot meet the requirements for anti-icing and de-icing tests of the entire hovering rotor. Summary of the Invention

[0004] This invention provides an outdoor spraying tower device for helicopter rotor anti-icing and de-icing test with adjustable spray height. It can not only effectively solve the problem of no ground effect at the hovering height of helicopter rotor anti-icing and de-icing, but also solve the problem of helicopter ground test verification, and meet the verification needs of different models.

[0005] This invention provides an outdoor spraying tower device for helicopter rotor anti-icing test with adjustable spray height, comprising: an upper frame, a lower frame, a fan array 3, a cloud and fog generating device 4, a lifting device 5, and multiple standard sections 6; Standard section 6 is a frame structure. The four columns of the frame structure are equipped with upper connecting holes 14, lower connecting holes 15 and fixing sections 16. Water pipes 11, air pipes 12 and pipe fixing brackets 13 are installed inside the frame structure. Two adjacent standard sections 6 are connected through upper connecting holes 14 and lower connecting holes 15. The bottom standard section 6 is set on the lower platform. The lifting device 5 includes: a lifting fixed frame 7, a lifting movable frame 8, a movable fixed standard section device 9, and a hydraulic system 10; The lifting frame 8 is connected to the outside of the standard section 6 through the fixed section 16. The bottom sides of the lifting fixed frame 7 are connected to the lifting frame 8 through the hydraulic system 10. The top end is connected to the lower end of the upper platform. The top side of the lifting fixed frame 7 is provided with a movable standard section fixing device 9. The standard section 6 to be installed is slid to the top of the standard section 6 inside the lifting frame 8 through the movable standard section fixing device 9. The upper frame is equipped with a fan array 3 and a cloud and fog generating device 4. The cloud and fog generating device 4 is connected to the water pipe 11 and air pipe 12 of the uppermost standard section 6.

[0006] Optionally, the outdoor spray tower device for helicopter rotor anti-icing test with adjustable spray height also includes: a cloud control system 1; The cloud and fog control system 1 is connected to the wind turbine array 3 to control wind speed and direction; The cloud and fog control system 1 is also connected to the water pipe 11 and air pipe 12 of the bottom standard section 6 to control the opening and closing of water and air and the pressure.

[0007] Optionally, the cloud generating device 4 is connected to the water pipe 11 and air pipe 12 of the uppermost standard section 6 via a flexible hose; The top of the lifting and fixing frame 7 is connected to the upper platform via a turntable, which is used to adjust the direction of the cloud and fog generating device 4.

[0008] Optionally, the upper connecting hole 14 and the lower connecting hole 15 are provided with matching protrusions and grooves, and the protrusions and grooves are provided with threaded holes for inserting bolts.

[0009] Optionally, guide columns are provided on the top of the four support columns of the lifting movable frame 8, and the four support columns of the lifting fixed frame 7 are sleeved on the guide columns.

[0010] Optionally, the lifting movable frame 8 and the lifting fixed frame 7 are provided with fixed section buckles around their perimeter that match the fixed section 16, and the fixed section buckles are detachable.

[0011] Optionally, the water pipes 11 and air pipes 12 of two adjacent standard sections 6 can be connected by quick-release couplings.

[0012] Optionally, the water pipe 11 and air pipe 12 of standard section 6 are equipped with heat insulation devices on the outside.

[0013] This invention provides an outdoor spray tower device for helicopter rotor anti-icing and de-icing testing with adjustable spray height, used for verifying the anti-icing and de-icing function of the entire helicopter rotor. By adjusting different spray heights, the device evaluates whether the performance of the helicopter rotor anti-icing and de-icing system meets design requirements in both ground and hovering states. Simultaneously, qualitative tests are conducted by adjusting cloud parameters to further verify the protective effect of the rotor anti-icing and de-icing. This innovative testing device can verify helicopter rotor anti-icing and de-icing tests on the ground and while hovering, effectively reducing the operational risks of helicopters in natural icing environments and improving pilot safety. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the test bench equipment and helicopter testing of the present invention; Figure 2 This is a schematic diagram of the lifting device of the present invention; Figure 3 This is a schematic diagram of a standard section of the present invention; Figure 4 This is a schematic diagram of the lifting working principle of the present invention; Explanation of reference numerals in the attached figures: Cloud and fog control system 1. Main frame 2. Fan array 3. Cloud and fog generating device 4. Lifting device 5. Multiple standard sections 6. Lifting fixed frame 7. Lifting movable frame 8. Movable fixed standard section device 9. Hydraulic system 10. Water pipe 11. Air pipe 12. Pipeline fixing frame 13. Upper connecting hole 14. Lower connecting hole 15. Fixed section 16. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited in each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0019] This invention designs an outdoor spraying tower device for helicopter rotor anti-icing test with adjustable spray height. The outdoor spraying tower device mainly consists of a cloud and fog control system 1, a main frame 2, a fan array 3, a cloud and fog generating device 4, a lifting device 5, and a standard section 6. In the invention of an outdoor spraying tower device for helicopter rotor anti-icing test with adjustable spray height, the height of the cloud and mist generating device is adjusted by adding or removing standard sections of the test platform. The spray area is on the cloud and mist generating device, and the lifting device lifts the test platform to a standard section position. After lifting, the standard section is pushed into the test platform, and the water pipe and air pipe in the standard section are connected to ensure that the water and air channels can be completed, thus achieving adjustable cloud and mist height. At the same time, the overall spray height is adjusted according to the different heights and aerodynamic performance of the helicopter rotor. The cloud and mist control system only controls the speed of the fan array and the parameters of the cloud and mist generating device. According to the different straight-line distances between the rotor center and the spray area, the speed of the fan array is adjusted to achieve full coverage of the cloud and mist and the rotor diameter, achieving better test results.

[0020] The main body of the platform is divided into an upper platform and a lower platform. The upper platform is mainly used to place the cloud and fog generating device and the wind turbine array, while the lower platform is mainly used to connect with the foundation and provide overall support for the platform.

[0021] The lifting device includes a fixed lifting frame 7, a movable lifting frame 8, a movable fixed standard section device 9, and a double-cylinder hydraulic system 10. The fixed lifting frame is connected to the lower end of the upper platform. The double-cylinder hydraulic system is installed on both sides of the fixed lifting frame, and the hydraulic extension rod is connected to the movable lifting frame. The fixed lifting frame and the movable lifting frame can be fixed by through-hole bolts. The fixed lifting frame has an extension platform and a movable fixed standard section device connected to it. The movable fixed standard section device can move back and forth on its track.

[0022] The standard section of the test bench includes a water pipe 11, an air pipe 12, a pipe fixing bracket 13, an upper connecting hole 14, a lower connecting hole 15, and a fixing section 16.

[0023] The heat preservation device uses the heat generated by the heat preservation equipment itself to heat the water pipes and gas pipes, so that the inside of the gas pipes and water pipes can be maintained above 0 degrees Celsius in low-temperature environments.

[0024] See Figures 1-4 The present invention will now be described in further detail. The present invention designs an outdoor spraying tower device for helicopter rotor anti-icing test with adjustable spray height. The device mainly includes a cloud and fog control system, a test platform, a fan array, a cloud and fog generating device, a lifting device, standard sections, etc.

[0025] The cloud and fog control system can control the speed of the wind turbine array and the cloud and fog generating device, thereby changing the parameters of the cloud and fog state. The wind turbine array mainly provides the initial speed for the cloud and fog, enabling the cloud and fog to be transported over long distances. The cloud and fog generating device provides the cloud and fog, and the cloud and fog state is determined by the water pressure and air pressure of the nozzle type. There are also water treatment system and air source system at the front end to provide ultrapure water and support and air source support.

[0026] The main body of the test platform is divided into two parts: the upper platform and the lower platform. The upper platform mainly fixes the fan array and the spray generating device. The lifting device enables the extraction and pushing of the standard section, providing a design guarantee for inserting the standard section at a high position.

[0027] The standard section is a unit that raises the platform. Each standard section has fixed water pipes and air pipes. Standard sections can be interchanged or combined in twos. Water pipes and air pipes can be paired with each other at the top and bottom interfaces, and water pressure and air pressure can be delivered.

[0028] The test machine serves as the test piece. Under normal operation of the device, it sprays out a cloud and fog environment that meets the test conditions to verify the anti-icing and de-icing function of the main rotor.

[0029] During ground testing, the spray height is determined based on the height of the helicopter rotor disc plane to determine the center position of the spray, ensuring that the spray height is consistent with the center height of the rotor disc plane. During hovering testing, the spray height is determined based on the helicopter's hovering height without ground effect, and the outdoor spray tower device is raised until the spray height is consistent with the center height of the rotor disc plane.

[0030] To achieve adjustable cloud and fog height, a lifting device and a standard section were designed. The lifting device includes a lifting fixed frame, a lifting movable frame, a movable fixed standard section device, and a dual-cylinder hydraulic system. The standard section includes water pipes, air pipes, a pipe fixing frame, an upper connecting hole, an upper connecting hole, and a fixed section.

[0031] Initially, the lifting device's movable lifting frame is connected to the fixed section of the standard section via a fixing fixture. The lifting device's fixed lifting frame and movable lifting frame are connected by a hydraulic double-cylinder system and are equipped with connectors and bolts. First, the connectors and bolts between the lifting device's fixed lifting frame and movable lifting frame need to be removed, so that the movable lifting frame and fixed lifting frame can only be connected via the hydraulic double-cylinder system. The hydraulic double-cylinder system extends, causing the fixed lifting frame to move upwards. After moving to the required installation space for the standard section, the new standard section is connected to the movable fixed standard section device of the lifting device. Thus, the new standard section can be connected via the movable fixed standard section device. The standard section device is pushed into the space of the original standard section. After it is pushed into the appropriate position, the upper connecting holes of the standard section are fixed with pins, the water pipes are fixed with each other, and the air pipes are fixed with each other. At this time, the lifting device is detached from the fixed section in the standard section by the fixing fixture. The lifting device is pulled up by shortening the hydraulic double cylinder system. After being pulled to the fixed position, the lifting device is fixed to the fixed section in the previous standard section by the fixing fixture. This completes one increase in the height of the platform. If it is necessary to lower the height, the operation is reversed.

[0032] Before the test, the cloud and fog generator needs to be calibrated. The cloud and fog state is determined based on three parameters: nozzle water pressure, air pressure, and fan speed. This calibration data is used as the basis for adjusting the state during the test. During ground and hovering tests, the helicopter rotor is kept running normally. The cloud and fog control system in the device is adjusted to the previously calibrated parameters. During the parameter adjustment process, the cloud and fog should be kept away from the helicopter as much as possible. Once the parameters stabilize, the timer is started. When the test time is up, the spraying is stopped, and the surface effect on the helicopter rotor and related test parameters are observed.

[0033] This invention not only effectively solves the problem of helicopter rotor anti-icing and hovering altitude without ground effect, but also solves the problem of helicopter ground testing and verification, and meets the verification needs of different models.

[0034] The key points of this invention are as follows: Regarding the standard sections: a detachable and replaceable standard section was designed. The standard section includes water and air pipes in the same position. Two standard sections are fixed together by upper and lower connecting holes. Water and air are transported between the pipes using CE-type aluminum alloy quick connectors. This design achieves adjustable test height while ensuring the complete transport of water and air required for the test. Additionally, a fixed section is designed to support the lifting device and connect to the movable lifting frame.

[0035] Regarding the lifting device: The lifting device is used to lift the standard section and push it into the position where it needs to be connected to the next standard section. In order to achieve the lateral movement of the standard section at a high position, a movable fixed standard section device is designed, which realizes the function of moving the standard section into the central installation position regardless of the height of the platform. At the same time, in order to accommodate the height difference between the lifting fixed frame and the lifting movable frame of the lifting device, a double-cylinder lifting hydraulic system is designed, which balances the imbalance of the platform and also meets the space for inserting the standard section during lifting.

[0036] The proposed solution is reasonable and feasible, solving the problems of ground and hovering anti-icing tests on the entire rotor of this helicopter model. Currently, the system is operating well and has completed all tests following the model's maiden flight. The test data is authentic and valid, and the reliability and safety of each system on the test bench are excellent. Through these tests, the working capability of the helicopter model's rotor anti-icing and de-icing system has been effectively evaluated, laying a solid foundation for the model's operation in high-altitude and cold-weather conditions.

[0037] The above detailed embodiments are a description of the present invention. It should not be considered that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, several simple deductions and substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the protection scope of the present invention.

Claims

1. An outdoor spraying tower device for helicopter rotor anti-icing test with adjustable spray height, characterized in that, include: Upper platform, lower platform, wind turbine array (3), cloud and fog generating device (4), lifting device (5), multiple standard sections (6); The standard section (6) is a frame structure. The four columns of the frame structure are provided with upper connecting holes (14), lower connecting holes (15) and fixing sections (16). Water pipes (11), air pipes (12) and pipe fixing brackets (13) are installed inside the frame structure. Two adjacent standard sections (6) are connected through upper connecting holes (14) and lower connecting holes (15). The bottom standard section (6) is set on the lower platform. The lifting device (5) includes: a lifting fixed frame (7), a lifting movable frame (8), a movable fixed standard section device (9), and a hydraulic system (10). The lifting frame (8) is connected to the outside of the standard section (6) through the fixed section (16). The bottom sides of the lifting fixed frame (7) are connected to the lifting frame (8) through the hydraulic system (10). The top end is connected to the bottom end of the upper platform. The top side of the lifting fixed frame (7) is provided with a movable fixed standard section device (9). The standard section (6) to be installed is slid to the top of the standard section (6) inside the lifting frame (8) through the movable fixed standard section device (9). The upper frame is equipped with a fan array (3) and a cloud and fog generating device (4). The cloud and fog generating device (4) is connected to the water pipe (11) and air pipe (12) of the uppermost standard section (6).

2. The outdoor spraying tower device for helicopter rotor anti-icing test chamber with adjustable spray height according to claim 1, characterized in that, Also includes: Cloud and fog control system (1); The cloud and fog control system (1) is connected to the wind turbine array (3) to control wind speed and wind direction; The cloud and fog control system (1) is also connected to the water pipe (11) and air pipe (12) of the bottom standard section (6) to control the opening and closing of water and air and pressure.

3. The outdoor spraying tower device for helicopter rotor anti-icing test chamber with adjustable spray height according to claim 1, characterized in that, The cloud and fog generating device (4) is connected to the water pipe (11) and air pipe (12) of the uppermost standard section (6) via a flexible hose; The top of the lifting and fixing frame (7) is connected to the upper platform via a turntable, which is used to adjust the direction of the cloud and fog generating device (4).

4. The outdoor spraying tower device for helicopter rotor anti-icing test chamber with adjustable spray height according to claim 1, characterized in that, The upper connecting hole (14) and the lower connecting hole (15) are provided with matching protrusions and grooves, and the protrusions and grooves are provided with threaded holes for inserting bolts.

5. The outdoor spraying tower device for helicopter rotor anti-icing test chamber with adjustable spray height according to claim 1, characterized in that, The top of the four support columns of the lifting movable frame (8) is provided with guide columns, and the four support columns of the lifting fixed frame (7) are sleeved on the guide columns.

6. The outdoor spraying tower device for helicopter rotor anti-icing test chamber with adjustable spray height according to claim 5, characterized in that, The lifting movable frame (8) and the lifting fixed frame (7) are provided with fixed section buckles that match the fixed section (16) around their perimeter. The fixed section buckles are detachable.

7. The outdoor spraying tower device for helicopter rotor anti-icing test chamber with adjustable spray height according to claim 1, characterized in that, The water pipe (11) and air pipe (12) of two adjacent standard sections (6) are connected by quick-release connectors.

8. The outdoor spraying tower device for helicopter rotor anti-icing test chamber with adjustable spray height according to claim 1, characterized in that, The water pipe (11) and air pipe (12) of the standard section (6) are equipped with heat insulation devices on the outside.

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