A measuring device and a measuring method for a trans-medium vehicle power system

Abstract

This invention relates to a measurement device and method for a cross-medium vehicle propulsion system. The measurement device includes a movable test bench, a propulsion system, a slide rail displacement system, a power acquisition device, and a data acquisition platform. The slide rail displacement system is mounted on the movable test bench, the power acquisition device is mounted on the propulsion system and moves vertically via the slide rail displacement system, and the data acquisition platform acquires the force loads on the propulsion system through the power acquisition device. The propulsion system of this invention provides power sources of different sizes, enabling the vehicle to actively move vertically under the drive of the power sources, providing a support platform for testing the impact loads experienced by cross-medium vehicles. To test the impact loads experienced by the vehicle under the action of power sources of different sizes during water entry and exit, the slide rail displacement system on the movable test bench allows the vehicle to achieve three test attitudes: submerged in water, floating on the water surface, and in air.

Description

Technical Field

[0001] This invention relates to the field of cross-water and air medium dynamic measurement technology, specifically to a measurement device and method for a cross-medium vehicle power system. Background Technology

[0002] In recent years, trans-water / air-medium vehicles have received widespread attention. They are designed for both aerial and underwater use, encompassing four operational modes: airborne, water-entry, underwater, and water-emergence. Among these, the propulsion system has a crucial impact on trans-water vehicles. Different impact loads are generated during the water-emergence and water-emergence processes of trans-water vehicles, thus affecting their water-emergence and water-emergence attitudes, and in severe cases, causing structural failure of the vehicle.

[0003] To date, experimental devices for trans-water and trans-air medium vehicles have been disclosed. For example, the device with publication number "CN106932171A" can conduct water entry and exit tests at different angles and speeds, and "CN116893043A" can conduct tests on the force conditions of the vehicle under different water exit angles of attack.

[0004] However, the above patents do not address the impact of the power source provided by the vehicle's propulsion system on the impact loads experienced by the transmedium vehicle during different operating mode transitions.

[0005] To address the above technical issues, a measurement device and method for a cross-medium vehicle propulsion system are provided. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a measurement device for a cross-medium vehicle propulsion system, which can measure the impact loads on the cross-medium vehicle caused by the gas and electric power sources provided by the propulsion system during different operating mode transitions.

[0007] The technical problem solved by this invention is achieved through the following technical solution:

[0008] A measurement device for a cross-medium vehicle propulsion system includes a movable test bench, a propulsion system, a slide rail displacement system, a power acquisition device, and a data acquisition platform. The slide rail displacement system is installed on the movable test bench, the power acquisition device is installed on the propulsion system and moves up and down through the slide rail displacement system, and the data acquisition platform acquires the force load of the propulsion system through the power acquisition device.

[0009] The movable test bench includes a water tank and a test bench inside the water tank;

[0010] The power acquisition device includes an engine thrust sensor and a vehicle thrust sensor;

[0011] The power system includes a gas power source and an electric power source:

[0012] The turbojet engine of the gas power source is installed inside the tail end of the aircraft's outer shell. The turbojet engine is connected to an engine thrust sensor, which measures the force load on the aircraft in the air.

[0013] The electric power source drives the active gear to rotate through the drive motor, thereby driving the propeller to rotate. The vehicle shell is connected to a vehicle thrust sensor, which measures the force load on the vehicle in the water, and the impact load when entering and leaving the water.

[0014] The gas-powered vehicle is propelled by an air-based power source and by an electric power source in a water-based power source. The vehicle, carrying the power system, is slidably mounted on a rail displacement system.

[0015] Furthermore, the movable test bench includes a water tank with casters at the bottom and a test bench inside the water tank. The test bench is composed of crossbeams, longitudinal beams, vertical beams and triangular support plates. The crossbeams, longitudinal beams and vertical beams are fixedly connected by triangular support plates and bolts. The test bench is fixed inside the water tank by triangular support plates.

[0016] Furthermore, the turbojet engine of the gas power source is mounted on the engine mounting bracket via engine clamps. The engine mounting bracket is mounted on the engine mounting plate. An engine thrust sensor is connected to the lower end of the engine mounting plate. The engine thrust sensor is mounted on the tail support plate inside the vehicle's outer shell.

[0017] Furthermore, the drive motor of the electric power source is connected to a drive transmission linkage and installed inside the vehicle's outer shell. A drive gear sleeve is installed at one end of the drive transmission linkage, a drive gear is installed at the outer end of the drive gear sleeve, and a drive bearing is installed at the inner end of the drive gear sleeve. One end of the transmission support frame of the electric power source is embedded in the drive bearing through a large round nut, and the other end of the transmission support frame of the electric power source is embedded in the driven bearing through a small round nut. A driven gear sleeve is fitted onto the outer end of the driven bearing, and a driven gear is installed at the outer end of the driven gear sleeve. The drive gear drives the driven gear to rotate the propeller. The drive gear and driven gear are installed inside the transmission support frame housing, and the propeller extends outside the transmission support frame housing. The vehicle's outer shell is equipped with a vehicle clamp, which is installed on a vehicle mounting frame. The vehicle mounting frame is installed on a vehicle mounting plate, and a vehicle thrust sensor is connected to the lower end of the vehicle mounting plate.

[0018] Furthermore, the slide rail displacement system uses triangular support plates and bolts to install the slide rail in the middle position of the movable test bench. The upper end of the base plate of the slide rail displacement system is equipped with a vehicle thrust sensor. The base plate is connected to the slide rail through the slide rail connecting block. The base plate moves freely vertically between the slide rail blocks under the drive of the vehicle's power system.

[0019] A measurement method utilizing a measurement device for a cross-medium vehicle propulsion system includes the following steps:

[0020] (1) Install a movable test stand, slide the vehicle head-up onto the slide rail displacement system, and place it in the water;

[0021] (2) Start the drive motor of the electric power source and adjust the speed range to 100 r / min-200 r / min;

[0022] (3) The drive motor of the electric power source drives the propeller to rotate through gear transmission. The propeller speed range is 250r / min-300r / min. The propeller direction is upward, which drives the vehicle to rise from underwater to above the water surface along the slide rail displacement system. After the vehicle is fully out of the water, the turbojet engine of the gas power source is started. The engine thrust sensor collects the thrust inside the vehicle in real time.

[0023] (4) The drive motor of the electric power source drives the propeller to rotate through gear transmission. The propeller speed range is 250 r / min-300 r / min. The propeller direction is downward, which drives the vehicle to descend from the water surface to below the water surface along the slide rail displacement system.

[0024] (5) The thrust sensor of the vehicle collects the thrust, buoyancy and impact load force of the vehicle in real time during the entire motion process.

[0025] (6) Record the measurement data, disassemble the aircraft, and the measurement is complete;

[0026] Data collected by engine thrust sensors and vehicle thrust sensors are recorded on a data acquisition platform to monitor the vehicle's gas and electric power sources and the impact loads it experiences in real time.

[0027] The advantages and positive effects of this invention are:

[0028] 1. The power system of the measurement device for the cross-medium vehicle power system of the present invention includes a gas power source and an electric power source. The turbojet engine and the drive motor drive the propeller to provide lift force, which enables the vehicle to actively complete vertical displacement under the drive of the power source, providing a test basis for testing the impact loads on the vehicle under the action of different power sources during the water exit and water entry processes.

[0029] 2. The measuring device for the cross-medium vehicle power system of the present invention supports multi-degree-of-freedom power measurement. In particular, during the cross-medium process, the slide rail displacement system can realize the measurement of various working conditions and attitudes of the vehicle, and detect the force situation of buoyancy, gravity and power source working together in real time, realizing the measurement of three-dimensional force vector in space. Attached Figure Description

[0030] Figure 1 This is a three-dimensional schematic diagram of the measuring device for the cross-medium vehicle propulsion system of the present invention;

[0031] Figure 2 This is a three-dimensional schematic diagram of the gas power source of the power system of the present invention;

[0032] Figure 3 This is a three-dimensional schematic diagram of the electric power source of the power system of the present invention;

[0033] Figure 4 This is a partial cross-sectional view of the electric power source of the power system of the present invention;

[0034] Figure 5 This is a schematic diagram of the vehicle of the present invention entering the water;

[0035] Figure 6 This is a schematic diagram of the vehicle of the present invention emerging from the water.

[0036] In the picture:

[0037] 1-Universal wheel, 2-Water tank, 3-Crossbeam, 4-Longitudinal beam, 5-Vertical beam, 6-Triangular support plate, 7-Aircraft hull, 8-Turbojet engine, 9-Engine clamp, 10-Drive motor, 11-Drive transmission linkage, 12-Driving gear sleeve, 13-Driving gear, 14-Transmission support frame hull, 15-Driven gear, 16-Propeller, 17-Large round nut, 18-Small round nut, 19-Transmission support frame, 20-Driving bearing, 21-Driven bearing, 22-Aircraft clamp, 23-Engine mounting bracket, 24-Engine mounting plate, 25-Engine thrust sensor, 26-Aircraft mounting bracket, 27-Aircraft mounting plate, 28-Aircraft thrust sensor, 29-Slide rail, 30-Base plate, 31-Slide rail connecting block, 32-Slide rail stop, 33-Stern end support plate, 34-Driven gear sleeve. Detailed Implementation

[0038] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0039] like Figure 1-6As shown, a measurement device for a cross-medium vehicle propulsion system includes a movable test bench, a propulsion system, a slide rail displacement system, a power acquisition device, and a data acquisition platform. The slide rail displacement system is installed on the movable test bench, the power acquisition device is installed on the propulsion system and moves up and down through the slide rail displacement system, and the data acquisition platform acquires the force load of the propulsion system through the power acquisition device.

[0040] The movable test bench includes a water tank 2 with casters 1 at the bottom and a test bench inside the water tank. The test bench is composed of a crossbeam 3, a longitudinal beam 4, a vertical beam 5 and a triangular support plate 6. The crossbeam 3, longitudinal beam 4 and vertical beam 5 are fixedly connected by the triangular support plate 6 and bolts. The test bench is fixed inside the water tank 2 by the triangular support plate 6 to ensure the stability of the movable test bench.

[0041] The power acquisition device includes an engine thrust sensor 25 and a vehicle thrust sensor 28;

[0042] The power system includes a gas power source and an electric power source:

[0043] The turbojet engine 8, powered by gas, is installed inside the tail end of the aircraft's outer shell 7. The turbojet engine 8 is connected to an engine thrust sensor 25, which measures the force load on the aircraft in the air.

[0044] The gas-powered engine is a turbojet engine 8. The engine clamp 9 holds the turbojet engine 8 and then bolts it to the engine mounting bracket 23. The engine mounting bracket 23 is bolted to the engine mounting plate 24. An engine thrust sensor 25 is installed at the lower end of the engine mounting plate 24. The lower end of the engine thrust sensor 25 is bolted to the tail support plate 33 inside the vehicle shell 7. The gas-powered engine mainly works in the air medium, and the jet of high-temperature and high-pressure gas generates reverse thrust to propel the vehicle.

[0045] The electric power source drives the drive gear 13 to rotate the driven gear 15 through the drive motor 10, thereby driving the propeller 16 to rotate. The vehicle shell 7 is connected to the vehicle thrust sensor 28, which measures the force load on the vehicle in the water and the impact load when entering and leaving the water.

[0046] The drive motor 10 of the electric power source is connected to a drive transmission link 11 and installed inside the vehicle shell 7. A drive gear sleeve 12 is installed at one end of the drive transmission link 11, a drive gear 13 is installed at the outer end of the drive gear sleeve 12, and a drive bearing 20 is installed at the inner end of the drive gear sleeve 12. One end of the transmission support frame 19 of the electric power source is embedded in the drive bearing 20 through a large round nut 17, and the other end of the transmission support frame 19 of the electric power source is embedded in the driven bearing 21 through a small round nut 18. A driven gear sleeve 34 is fitted onto the outer end of the driven bearing 21. A driven gear 15 is installed at the outer end of the sleeve 34. The driving gear 13 drives the driven gear 15 to rotate the propeller 16. The driving gear 13 and the driven gear 15 are installed inside the transmission support frame housing 14, and the propeller 16 extends out of the transmission support frame housing 14. The aircraft housing 7 is equipped with an aircraft clamp 22, which is mounted on the aircraft mounting bracket 26. The aircraft mounting bracket 26 is mounted on the aircraft mounting plate 27, and the lower end of the aircraft mounting plate 27 is connected to the aircraft thrust sensor 28. The electric power source propels the aircraft in water. The driving gear 13 in the transmission support frame housing 14 drives the driven gear 15 to rotate through the gear rotation. The driven gear 15 drives the propeller 16 to rotate through the driven gear sleeve. The transmission support frame housing can drive the propeller to rotate 180° to change the aircraft's heading. Both the engine thrust sensor 25 and the aircraft thrust sensor 28 use a computer to collect data in real time, ensuring high accuracy.

[0047] The slide rail displacement system is installed inside the water tank 2, and the vehicle carrying the power system is slidably mounted on the slide rail displacement system. The slide rail displacement system is used to install the slide rail 29 in the middle position of the movable test bench through triangular support plates 6 and bolts. The vehicle thrust sensor 28 is installed on the upper end of the base plate 30 of the slide rail displacement system. The base plate 30 is connected to the slide rail through the slide rail connecting block 31. The base plate 30 moves freely vertically between the slide rail stops 32 under the drive of the vehicle's power system, enabling the vehicle to achieve three test attitudes: submerged in water, floating on the water surface, and in air. The slide rail displacement system can realize the measurement of the vehicle under various working conditions and attitudes when submerged in water, floating on the water surface, and in air, and can detect the forces acting on the vehicle in real time, including buoyancy, gravity, and the power source, realizing the measurement of three-dimensional force vectors in space. This invention can actively complete the vertical displacement under the drive of the vehicle's power source, and complete the impact load test of the vehicle during the process of leaving and entering the water.

[0048] A measurement method utilizing a measurement device for a cross-medium vehicle propulsion system includes the following steps:

[0049] (1) Install a movable test stand, slide the vehicle head-up onto the rail displacement system, and place it in water; the vehicle should be in a sealed state, such as Figure 3-4As shown, the electric power source is provided by a drive motor that drives the propeller. The drive motor drives the transmission linkage to connect the drive gear sleeve and drive the main gear to rotate. The drive gear drives the driven gear to rotate through the rotation of the gear, and the driven gear drives the propeller to rotate through the driven gear sleeve.

[0050] (2) Start the drive motor of the electric power source and adjust the speed range to 100 r / min-200 r / min.

[0051] (3) The drive motor of the electric power source drives the propeller to rotate through gear transmission. The propeller speed range is 250 r / min-300 r / min. The propeller is directed upwards, driving the vehicle to rise from underwater across the medium to above the water surface along the sliding rail displacement system. When the vehicle rises above the water surface into the air medium, such as Figure 2 The gas-powered source shown is powered by a turbojet engine. When the turbojet engine of the gas-powered source is started, the cabin door and exhaust pipe on the outer shell of the aircraft open, and air enters the turbojet engine. The engine thrust is transmitted to the engine thrust sensor through the engine clamp, engine mounting bracket and mounting plate. The engine thrust sensor collects the thrust inside the aircraft in real time.

[0052] When the aircraft propeller is pointing upwards, such as Figure 3-4 As shown, the vehicle drives the base plate to rise along the slide rail. The vehicle thrust sensor between the vehicle mounting plate and the base plate can collect the magnitude of the impact load on the vehicle when it leaves the water at different propeller speeds. Similarly, when the propeller is pointing downwards, the magnitude of the impact load on the vehicle when it enters the water at different propeller speeds can be collected.

[0053] (4) The drive motor of the electric power source drives the propeller to rotate through gear transmission. The propeller speed range is 250 r / min-300 r / min. The propeller direction is downward, which drives the vehicle to descend from the water surface to below the water surface along the slide rail displacement system.

[0054] (5) The thrust sensor of the vehicle collects the thrust, buoyancy and impact load force of the vehicle in real time during the entire motion process.

[0055] (6) Record the measurement data, disassemble the aircraft, and the measurement is completed.

[0056] The angle of the slide rail can be adjusted at any time according to the test plan, with an adjustment range of 30° to 90°, which can simulate more cross-media usage scenarios of the aircraft.

[0057] The thrust sensor for the aircraft and the thrust sensor for the engine in this invention are both based on the strain principle. The collected thrust is first converted into a voltage signal and then acquired by the NI board. The signal acquired by the board is then converted into a force signal and finally transmitted to the data acquisition platform via a 485 signal to observe the gas and electric power sources of the aircraft and the impact loads it is subjected to in real time.

[0058] The above-mentioned aircraft are simulated aircraft.

[0059] The measurement device for the power system of a cross-medium vehicle of the present invention supports multi-degree-of-freedom dynamic measurement. In particular, during cross-medium processes, the slide rail displacement system can realize the measurement of various working conditions and attitudes of the vehicle, and detect the forces acting on the vehicle in real time, including buoyancy, gravity and power source, thus realizing the measurement of three-dimensional force vector in space.

[0060] The power system of this invention provides power sources of different sizes, enabling the vehicle to actively move up and down under the drive of the power source, thus providing a support platform for testing the impact loads experienced by the vehicle across media. To test the impact loads experienced by the vehicle under the action of power sources of different sizes during the water exit and entry processes, a sliding rail displacement system on the movable test bench allows the vehicle to achieve three test attitudes: submerged in water, floating on the water surface, and in air.

[0061] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A measuring device for a trans-medium vehicle power system, characterized by: It comprises a movable test bench, a power system, a slide rail displacement system, a power collection device and a data collection platform; the slide rail displacement system is installed on the movable test bench, the power collection device is installed on the power system and is displaced up and down through the slide rail displacement system, and the data collection platform collects the force load of the power system through the power collection device; The movable test bench comprises a water tank (2) and a test bench inside the water tank (2). The power collection device comprises an engine thrust sensor (25) and an aircraft thrust sensor (28). The power system comprises a gas power source and an electric power source. The turbojet engine (8) of the gas power source is installed at the tail end inside the aircraft shell (7), the turbojet engine (8) is connected with the engine thrust sensor (25), and the force load of the aircraft in the air is measured through the engine thrust sensor (25); The electric power source drives the driving gear (13) through the driving motor (10) to drive the driven gear (15) to rotate, so as to drive the propeller (16) to rotate, the aircraft shell (7) is connected with the aircraft thrust sensor (28), and the force load of the aircraft in the water, the impact load of entering and exiting the water are measured through the aircraft thrust sensor (28); The gas power source propels the aircraft to run in the air medium, the electric power source propels the aircraft to run in the water medium, and the aircraft carrying the power system is slidably installed on the slide rail displacement system.

2. The measurement device of the cross-media vehicle power system of claim 1, wherein: The movable test bench comprises a water tank (2) with universal wheels (1) at the bottom and a test bench inside the water tank (2), the test bench is composed of a cross beam (3), a longitudinal beam (4), a vertical beam (5) and a triangular support plate (6), the cross beam (3), the longitudinal beam (4) and the vertical beam (5) are fixedly connected through the triangular support plate (6) and bolts, and the test bench is fixed in the water tank through the triangular support plate (6).

3. The measurement device of the cross-media vehicle power system of claim 1, wherein: The turbojet engine (8) of the gas power source is installed on the engine mounting bracket (23) through the engine clamp (9), the engine mounting bracket (23) is installed on the engine mounting plate (24), the lower end of the engine mounting plate (24) is connected with the engine thrust sensor (25), and the engine thrust sensor (25) is installed on the tail end support plate (33) inside the aircraft shell (7).

4. The measurement device of the cross-media vehicle power system of claim 1, wherein: The driving motor (10) of the electric power source is connected with a driving transmission connecting rod (11) and is installed in the vehicle shell (7), one end of the driving transmission connecting rod (11) is installed with a driving gear sleeve (12), the outer end of the driving gear sleeve (12) is installed with a driving gear (13), the inner end of the driving gear sleeve (12) is installed with a driving bearing (20), one end of the transmission support frame (19) of the electric power source is embedded into the driving bearing (20) through a large round nut (17), the other end of the transmission support frame (19) of the electric power source is embedded into a driven bearing (21) through a small round nut (18), the outer end of the driven bearing (21) is sleeved with a driven gear sleeve (34), the outer end of the driven gear sleeve (34) is installed with a driven gear (15), the driving gear (13) drives the driven gear (15) to drive the propeller (16) to rotate, the driving gear (13) and the driven gear (15) are installed in the transmission support frame shell (14), and the propeller (16) extends out of the transmission support frame shell (14); The vehicle shell (7) is installed with a vehicle clamp (22), the vehicle clamp (22) is installed on a vehicle mounting frame (26), the vehicle mounting frame (26) is installed on a vehicle mounting plate (27), and the lower end of the vehicle mounting plate (27) is connected with a vehicle thrust sensor (28).

5. The measurement device of the cross-media vehicle power system of claim 2, wherein: The slide rail displacement system installs the slide rail (29) in the middle position of the movable test bed through the triangular supporting plate (6) and the bolt, the bottom plate (30) of the slide rail displacement system is installed with the vehicle thrust sensor (28) at the upper end, the bottom plate (30) is connected on the slide rail (29) through the slide rail connecting block (31), and the bottom plate (30) is freely vertically moved between the slide rail stoppers (32) under the driving of the vehicle power system.

6. A method of measuring using the measuring device of the trans-medium vehicle power system of claim 1, characterized by: The method comprises the following steps: (1) install the movable test bed, slide the vehicle head upwards and install it on the slide rail displacement system, and place it in water; (2) start the driving motor of the electric power source, and adjust the rotating speed range to be 100 r / min-200 r / min; (3) the driving motor of the electric power source drives the propeller to rotate through gear transmission, the rotating speed range of the propeller is 250 r / min-300 r / min, the propeller drives the vehicle to ascend along the slide rail displacement system from the water to above the water surface in the upward direction, after the vehicle is completely out of water, start the turbojet engine of the gas power source, and the engine thrust sensor collects the thrust in the vehicle in real time; (4) the driving motor of the electric power source drives the propeller to rotate through gear transmission, the rotating speed range of the propeller is 250 r / min-300 r / min, the propeller drives the vehicle to descend along the slide rail displacement system from the water to below the water surface in the downward direction; (5) the vehicle thrust sensor collects the thrust, buoyancy and impact load force suffered by the vehicle in the process of getting out of water and getting into water in real time; (6) record the measurement data, disassemble the vehicle, and end the measurement; The engine thrust sensor and the aircraft thrust sensor collect data and record the data to a data acquisition platform, and real-time observation of the aircraft gas power source and electric power source and the impact load received.

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