CN113650805A - Device and method for testing water surface floating characteristic model of rotor type airplane - Google Patents
Device and method for testing water surface floating characteristic model of rotor type airplane Download PDFInfo
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- 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
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- B64F5/60—Testing or inspecting aircraft components or systems
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Abstract
The invention belongs to the technical field of aviation aircraft tests, and particularly relates to a device and a method for testing a water surface floating characteristic model of a rotor type airplane. The device comprises a rotor plane water surface floating characteristic test model (100), a water area guide rail (200), a test water area adjusting bracket (300), a wind speed simulation system (400), a wave generation system (500), a model connecting part (600), a sensor system (700) and a control system (800). According to the invention, by developing the research of the test method of the water surface floating characteristic model of the rotor type aircraft, the stable balance capacity, the storm response parameters and the floating time of the rotor type aircraft model in the water surface floating process can be measured, technical support is provided for the water surface use condition and the emergency escape programming of the full-size rotor type aircraft, and a guidance suggestion is provided for reducing casualties and body structure damage of the rotor type aircraft caused by insufficient floating capacity. The method is practical and feasible, is simple to operate, has reliable test results and has wide application range.
Description
Technical Field
The invention belongs to the technical field of aviation aircraft tests, and particularly relates to a device and a method for testing a water surface floating characteristic model of a rotor type airplane.
Background
The rotary wing type aircraft has the characteristics of vertical lifting, hovering, low altitude or low speed flying and the like which are not possessed by a common fixed wing aircraft. But be widely used in the fields of transportation, patrol, maritime search and rescue, etc. However, as the flight time of rotary wing aircraft increases, the likelihood of failure while performing a mission increases. After the rotary wing type aircraft takes the forced landing on water, irregular shaking and slamming motions can occur under the interference of sea wave, and the structural strength of water-contacting components and the emergency escape reaction capability of personnel in the aircraft are directly influenced. China civil aviation regulations, part 27, the airworthiness of normal type rotor craft and part 29, the airworthiness of transportation type rotor craft, put forward specific requirements on the water surface floating capacity of rotor craft, that is, under reasonable and possible water conditions, the floating time and balance of the rotor craft can enable all passengers to leave the rotor craft and take life rafts required by the regulations. "
In the process of verifying the compliance of regulations, a model test or a rotorcraft analogy method similar to the known configuration is generally adopted, but because the research on the overwater forced landing problem in China is started late, and the performance research data of the rotorcraft with the same configuration is less due to the restriction of various technical levels. In order to research the water surface floating characteristic of the rotor type airplane, the most intuitive and effective method is to research parameters such as stable balance performance, response characteristic, overturning limit condition, floating time and the like of a scaling model of the rotor type airplane under different water surface conditions through a scaling model test of the rotor type airplane. By developing the forecasting research of the response characteristics of the full-size airplane, the technical support is provided for the judgment of the sea condition of the water inlet and floating stability of the real airplane.
At present, no practical device and method for testing the water surface floating characteristic model of the rotor type airplane is disclosed in the prior art.
Disclosure of Invention
The purpose of the invention is: aiming at the defects of the prior art, a practical device and a method for testing the water surface floating characteristic model of a rotor type airplane are provided.
The technical scheme of the invention is as follows: in order to achieve the above object, according to a first aspect of the present invention, a test apparatus for a model of a water surface floating characteristic of a rotor-type aircraft is provided, which includes a test model 100 of a water surface floating characteristic of a rotor-type aircraft, a water area guide rail 200, a test water area adjusting bracket 300, a wind speed simulation system 400, a wave generation system 500, a model connecting component 600, a sensor system 700, and a control system 800;
the test model 100 for the water surface floating characteristic of the rotor type aircraft is placed in a test water pool;
the water area guide rails 200 are two steel rails parallel to the pool walls on the two sides of the test water area pool and are fixedly connected to the pool walls on the two sides of the test water area pool; the test water area adjusting bracket 300 is positioned above the test water area pool and can freely slide along the water area guide rail 200; the device can be used for model position adjustment and course control in the test process;
the wind speed simulation system 400 is positioned above the water surface of the test water area pool, and two ends of the wind speed simulation system are respectively and fixedly connected with pool walls on two sides of the test water area pool, so that the wind load size meeting the test requirement can be simulated and output;
the wave generating system 500 is installed at one end and two side walls of the test water pool close to the wind speed simulation system 400, and can be used for outputting and adjusting target parameter waves;
the test model 100 for the water surface floating characteristic of the rotor type aircraft is connected with the test water area adjusting bracket 300 through the model connecting part 600; in the test process, a tester can control and adjust the course and the position of the model through the model connecting part 600;
the sensor system 700 is installed on the test model 100 for the water surface floating characteristic of the rotorcraft, and is used for monitoring and acquiring the motion attitude information of the model in the floating process in real time and carrying out information communication with the control system 800;
the control system 800 is disposed on the test water adjusting bracket 300 and is in communication with the sensor system 700.
In one possible embodiment, the test water adjusting bracket 300 comprises a test operation platform 301, a bottom reinforcing structure 302 and a pulley device 303; the test operation platform 301 is positioned on the upper plane of the test water area adjusting bracket 300 and can be used as an activity area of a tester; the bottom reinforcing structure 302 is a truss structure and is fixedly connected below the test operation platform 301, and is used for reinforcing the overall structural strength of the test operation platform; the pulley devices 303 are arranged at symmetrical positions on two sides below the test operation platform 301 and are fixedly connected with the lower part of the test operation platform 301; the pulley device 303 is connected with the water area guide rail 200 in a sliding fit manner, and can be used for adjusting the relative position between the test water area adjusting bracket and the water area guide rail.
In one possible embodiment, the wind speed simulation system 400 includes a fan group 401, a fan mounting beam 402; the fan mounting beam 402 is used for mounting the fan unit 401, and two ends of the fan mounting beam 402 are respectively and fixedly connected with lateral pool walls on two sides of a pool of a test water area; the fan set 401 is installed below the fan installation beam 402, and the fan set 401 can simulate and output the wind load meeting the test requirements.
In one possible embodiment, the wave generating system 500 comprises a wave generator electric control part, an electric cylinder 502, a wave generating plate 503 and a wave eliminating plate 504; the wave generator electric control part can be used for inputting wave parameters and controlling the motion frequency and the motion thread of the electric cylinder 502; the electric cylinder 502 is fixedly connected with the wall of the test water area pool; the electric cylinder 502 is fixedly connected with a wave making plate 503; the electric cylinder 502 can drive the wave making plate 503 to perform mechanical motion, so as to realize the analog output of target wave parameters; the wave-absorbing plate 504 is hinged with lateral pool walls on two sides of the pool of the test water area, and the wave-absorbing plate 504 can absorb waves of water surface waves of the test water area to enable the waves to quickly return to calm.
In one possible embodiment, the mold connecting member 600 includes a suspension loop 601, a kevlar mooring line 602; the suspension loops 601 are fixedly connected with the head end and the tail end of the test model 100 for the water surface floating characteristic of the rotorcraft and are used for solidifying the Kevlar mooring rope 602; the Kevlar mooring rope 602 is used for controlling the water surface floating posture/wave encountering direction of the test model, one end of the Kevlar mooring rope is fixedly connected with the hanging ring 601, the other end of the Kevlar mooring rope is connected with the test water area adjusting support 300, and the Kevlar mooring rope is manually controlled by a tester on the test operation platform 301.
In one possible embodiment, the sensor system 700 includes an inertial measurement unit 701, a wireless collector 702, a battery 703, a signal receiving antenna 704, a power supply control switch 705; the inertia measurement unit 701 is fixed at the gravity center of the test model 100 for the water surface floating characteristic of the rotor aircraft and is used for monitoring the motion attitude of the model in the floating process in real time; the wireless collector 702 and the battery 703 are fixed inside the test model 100 for the water surface floating characteristic of the rotor type aircraft, and the wireless collector 702 is used for collecting and recording test parameters of the inertia measurement unit 701; the battery 703 is electrically connected with the inertia measurement unit 701, the wireless collector 702 and the signal receiving antenna 704 respectively, and is used for supplying power to a sensor inside the model; the signal receiving antenna 704 is fixed at the top outside the test model 100 for the water surface floating characteristic of the rotor aircraft and is used for receiving a control signal sent by a control system; the power supply control switch 705 is fixed at the top position outside the test model 100 for the water surface floating characteristics of the rotary wing aircraft, serves as a control switch of the battery 703, and is electrically connected with the battery 703.
In one possible embodiment, the control system 800 includes a remote control 801, a data analysis system 803; the remote control device 801 is arranged on the test operation platform 301 and is used for sending a control signal to a signal receiving antenna 704 in the sensor system 700 so as to realize remote operation on the working state of the wireless collector 702; the data analysis system 803 is used for analyzing and demonstrating the effectiveness of the test data collected by the sensor system 700.
Further, the control system 800 further includes a camera system 802, and the camera system 802 can be one of a fixed camera or a handheld camera or a combination of both cameras, and is used for capturing a test status image of the model 100 for testing the water surface floating characteristics of the rotorcraft during the test, and is manually controlled by the staff on the operation platform 301.
According to a second aspect of the present invention, a method for testing a model of a water surface floating characteristic of a rotor aircraft is provided, wherein the method for testing a model of a water surface floating characteristic of a rotor aircraft is adopted, and the method is characterized by comprising the following steps:
step 1: pre-debugging the operating parameters of the wind speed simulation system 400 and the wave generation system 500 to ensure that the simulated output wind speed and wave parameters meet the test precision requirement;
step 2: after the work preparation is completed, the wave-absorbing plate 504 in the wave generating system 500 is pulled up, so that the wave-absorbing plate 504 is far away from the water surface and is kept in a vertical state with the water surface of the pool of the test water area;
and step 3: after a power supply control switch 705 in the sensor system 700 is turned on, the test model 100 of the surface floating characteristic of the rotorcraft is placed in a test water area between the test water area adjusting bracket 300 and the wind speed simulation system 400 through the movable end of the Kevlar mooring rope 602 in the model connecting part 600, and is adjusted to a test target course;
and 4, step 4: the wave generating system 500, the wind speed simulation system 400 and the control system 800 are started in sequence to work normally;
and 5: when waves and wind speed interference reach a test water area where the test model 100 of the water surface floating characteristic of the rotor plane is located, the model is controlled to encounter the wave direction by adjusting and controlling the relative angle and the absolute length between the movable end of the Kevlar mooring rope 602 and the model; in the test process, the wireless collector 702 records parameters of a roll angle, a pitch angle, roll angle speed and pitch angle speed of the test model 100 of the water surface floating characteristic of the rotor type aircraft in real time, and the camera system 802 records the whole process of the motion of the test model 100 of the water surface floating characteristic of the rotor type aircraft;
step 6: when the floating time of the test model 100 of the water surface floating characteristic of the rotor type airplane reaches a target value, closing the wave generating system 500, the wind speed simulation system 400, the remote control device 801 and the recording system 802 in the control system 800, stopping swinging and drifting of the test model 100 of the water surface floating characteristic of the rotor type airplane, and salvaging the test model 100 of the water surface floating characteristic of the rotor type airplane through the Kevlar mooring rope 601 to recheck and adjust the test state;
and 7: by adopting the data analysis system 803 in the control system 800, the roll angle, the pitch angle, the roll angular velocity and the pitch angular velocity parameters acquired by the sensor system 700 are utilized to draw a time-history change curve of the roll angle along with time, the validity of the test state is evaluated by analyzing the correlation between the change rule of the curve and the motion state of the model, invalid data is eliminated, and the recorded valid data comprises the change curve conditions of the weight, the gravity center position, the wind speed, the heading of the model, the wave parameters, the roll angle, the pitch angle, the roll angular velocity and the pitch angular velocity along with time.
In one possible embodiment, in step 5, the relative position of the test water adjustment bracket 300 on the water guide rail 200 is adjusted to avoid the adverse collision interference between the test model 100 of the floating characteristics of the rotorcraft and the test water adjustment bracket 300 during the movement.
The invention has the beneficial effects that: according to the invention, by developing the research of the test method of the water surface floating characteristic model of the rotor type aircraft, the stable balance capacity, the storm response parameters and the floating time of the rotor type aircraft model in the water surface floating process can be measured, technical support is provided for the water surface use condition and the emergency escape programming of the full-size rotor type aircraft, and a guidance suggestion is provided for reducing casualties and body structure damage of the rotor type aircraft caused by insufficient floating capacity. The method is practical and feasible, is simple to operate, has reliable test results and has wide application range.
Drawings
FIG. 1 is a schematic structural diagram of a testing apparatus according to a preferred embodiment of the present invention
FIG. 2 is a schematic structural diagram of a wave generating system 500 in a testing apparatus according to a preferred embodiment of the present invention
FIG. 3 is a schematic structural diagram of a wind speed simulation system 400 in a testing apparatus according to a preferred embodiment of the present invention
FIG. 4 is a schematic structural view of a test water adjusting bracket 300, a sensor system 700 and a control system 800 in a test apparatus according to a preferred embodiment of the present invention
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, according to a first aspect of the present invention, a test apparatus for a model of a water surface floating characteristic of a rotor-type aircraft is provided, which includes a test model 100 of a water surface floating characteristic of a rotor-type aircraft, a water area guide rail 200, a test water area adjusting bracket 300, a wind speed simulation system 400, a wave generation system 500, a model connecting component 600, a sensor system 700, and a control system 800;
the test model 100 for the water surface floating characteristic of the rotor type aircraft is placed in a test water pool;
the water area guide rails 200 are two steel rails parallel to the pool walls on the two sides of the test water area pool and are fixedly connected to the pool walls on the two sides of the test water area pool; the test water area adjusting bracket 300 is positioned above the test water area pool and can freely slide along the water area guide rail 200; the device can be used for model position adjustment and course control in the test process;
the wind speed simulation system 400 is positioned above the water surface of the test water area pool, and two ends of the wind speed simulation system are respectively and fixedly connected with pool walls on two sides of the test water area pool, so that the wind load size meeting the test requirement can be simulated and output;
the wave generating system 500 is installed at one end and two side walls of the test water pool close to the wind speed simulation system 400, and can be used for outputting and adjusting target parameter waves;
the test model 100 for the water surface floating characteristic of the rotor type aircraft is connected with the test water area adjusting bracket 300 through the model connecting part 600; in the test process, a tester can control and adjust the course and the position of the model through the model connecting part 600;
the sensor system 700 is installed on the test model 100 for the water surface floating characteristic of the rotorcraft, and is used for monitoring and acquiring the motion attitude information of the model in the floating process in real time and carrying out information communication with the control system 800;
the control system 800 is disposed on the test water adjusting bracket 300 and is in communication with the sensor system 700.
As shown in fig. 4, in one possible embodiment, the test water adjusting bracket 300 comprises a test operation platform 301, a bottom reinforcing structure 302 and a pulley device 303; the test operation platform 301 is positioned on the upper plane of the test water area adjusting bracket 300 and can be used as an activity area of a tester; the bottom reinforcing structure 302 is a truss structure and is fixedly connected below the test operation platform 301, and is used for reinforcing the overall structural strength of the test operation platform; the pulley devices 303 are arranged at symmetrical positions on two sides below the test operation platform 301 and are fixedly connected with the lower part of the test operation platform 301; the pulley device 303 is connected with the water area guide rail 200 in a sliding fit manner, and can be used for adjusting the relative position between the test water area adjusting bracket and the water area guide rail.
In one possible embodiment, as shown in FIG. 3, the wind speed simulation system 400 includes a fan pack 401, a fan mounting beam 402; the fan mounting beam 402 is used for mounting the fan unit 401, and two ends of the fan mounting beam 402 are respectively and fixedly connected with lateral pool walls on two sides of a pool of a test water area; the fan set 401 is installed below the fan installation beam 402, and the fan set 401 can simulate and output the wind load meeting the test requirements.
In one possible embodiment, as shown in fig. 2, the wave generating system 500 includes a wave generator electric control part, an electric cylinder 502, a wave generating plate 503, and a wave eliminating plate 504; the wave generator electric control part can be used for inputting wave parameters and controlling the motion frequency and the motion thread of the electric cylinder 502; the electric cylinder 502 is fixedly connected with the wall of the test water area pool; the electric cylinder 502 is fixedly connected with a wave making plate 503; the electric cylinder 502 can drive the wave making plate 503 to perform mechanical motion, so as to realize the analog output of target wave parameters; the wave-absorbing plate 504 is hinged with lateral pool walls on two sides of the pool of the test water area, and the wave-absorbing plate 504 can absorb waves of water surface waves of the test water area to enable the waves to quickly return to calm.
In one possible embodiment, as shown in fig. 4, the mold connecting member 600 includes a suspension loop 601, a kevlar mooring line 602; the suspension loops 601 are fixedly connected with the head end and the tail end of the test model 100 for the water surface floating characteristic of the rotorcraft and are used for solidifying the Kevlar mooring rope 602; the Kevlar mooring rope 602 is used for controlling the water surface floating posture/wave encountering direction of the test model, one end of the Kevlar mooring rope is fixedly connected with the hanging ring 601, the other end of the Kevlar mooring rope is connected with the test water area adjusting support 300, and the Kevlar mooring rope is manually controlled by a tester on the test operation platform 301.
In one possible embodiment, as shown in fig. 4, the sensor system 700 includes an inertial measurement unit 701, a wireless collector 702, a battery 703, a signal receiving antenna 704, and a power control switch 705; the inertia measurement unit 701 is fixed at the gravity center of the test model 100 for the water surface floating characteristic of the rotor aircraft and is used for monitoring the motion attitude of the model in the floating process in real time; the wireless collector 702 and the battery 703 are fixed inside the test model 100 for the water surface floating characteristic of the rotor type aircraft, and the wireless collector 702 is used for collecting and recording test parameters of the inertia measurement unit 701; the battery 703 is electrically connected with the inertia measurement unit 701, the wireless collector 702 and the signal receiving antenna 704 respectively, and is used for supplying power to a sensor inside the model; the signal receiving antenna 704 is fixed at the top outside the test model 100 for the water surface floating characteristic of the rotor aircraft and is used for receiving a control signal sent by a control system; the power supply control switch 705 is fixed at the top position outside the test model 100 for the water surface floating characteristics of the rotary wing aircraft, serves as a control switch of the battery 703, and is electrically connected with the battery 703.
In one possible embodiment, the control system 800 includes a remote control 801, a data analysis system; the remote control device 801 is arranged on the test operation platform 301 and is used for sending a control signal to a signal receiving antenna 704 in the sensor system 700 so as to realize remote operation on the working state of the wireless collector 702; the data analysis system is used for analyzing and demonstrating the effectiveness of the test data collected by the sensor system 700.
Further, the control system 800 further includes a camera system 802, and the camera system 802 can be one of a fixed camera or a handheld camera or a combination of both cameras, and is used for capturing a test status image of the model 100 for testing the water surface floating characteristics of the rotorcraft during the test, and is manually controlled by the staff on the operation platform 301.
According to a second aspect of the present invention, a method for testing a model of a water surface floating characteristic of a rotor-type aircraft is provided, where the method for testing a model of a water surface floating characteristic of a rotor-type aircraft includes the following steps:
step 1: pre-debugging the operating parameters of the wind speed simulation system 400 and the wave generation system 500 to ensure that the simulated output wind speed and wave parameters meet the test precision requirement;
step 2: after the work preparation is completed, the wave-absorbing plate 504 in the wave generating system 500 is pulled up, so that the wave-absorbing plate 504 is far away from the water surface and is kept in a vertical state with the water surface of the pool of the test water area;
and step 3: after a power supply control switch 705 in the sensor system 700 is turned on, the test model 100 of the surface floating characteristic of the rotorcraft is placed in a test water area between the test water area adjusting bracket 300 and the wind speed simulation system 400 through the movable end of the Kevlar mooring rope 602 in the model connecting part 600, and is adjusted to a test target course;
and 4, step 4: the wave generating system 500, the wind speed simulation system 400 and the control system 800 are started in sequence to work normally;
and 5: when waves and wind speed interference reach a test water area where the test model 100 of the water surface floating characteristic of the rotor plane is located, the model is controlled to encounter the wave direction by adjusting and controlling the relative angle and the absolute length between the movable end of the Kevlar mooring rope 602 and the model; in the test process, the wireless collector 702 records parameters of a roll angle, a pitch angle, roll angle speed and pitch angle speed of the test model 100 of the water surface floating characteristic of the rotor type aircraft in real time, and the camera system 802 records the whole process of the motion of the test model 100 of the water surface floating characteristic of the rotor type aircraft;
step 6: when the floating time of the test model 100 of the water surface floating characteristic of the rotor type airplane reaches a target value, closing the wave generating system 500, the wind speed simulation system 400, the remote control device 801 and the recording system 802 in the control system 800, stopping swinging and drifting of the test model 100 of the water surface floating characteristic of the rotor type airplane, and salvaging the test model 100 of the water surface floating characteristic of the rotor type airplane through the Kevlar mooring rope 601 to recheck and adjust the test state;
and 7: by adopting the data analysis system 803 in the control system 800, the roll angle, the pitch angle, the roll angular velocity and the pitch angular velocity parameters acquired by the sensor system 700 are utilized to draw a time-history change curve of the roll angle along with time, the validity of the test state is evaluated by analyzing the correlation between the change rule of the curve and the motion state of the model, invalid data is eliminated, and the recorded valid data comprises the change curve conditions of the weight, the gravity center position, the wind speed, the heading of the model, the wave parameters, the roll angle, the pitch angle, the roll angular velocity and the pitch angular velocity along with time.
In one possible embodiment, in step 5, the relative position of the test water adjustment bracket 300 on the water guide rail 200 is adjusted to avoid the adverse collision interference between the test model 100 of the floating characteristics of the rotorcraft and the test water adjustment bracket 300 during the movement.
Claims (10)
1. A test device for a water surface floating characteristic model of a rotor wing type airplane is characterized by comprising a water surface floating characteristic test model (100) of the rotor wing type airplane, a water area guide rail (200), a test water area adjusting bracket (300), a wind speed simulation system (400), a wave generation system (500), a model connecting part (600), a sensor system (700) and a control system (800);
the test model (100) of the floating characteristic of the water surface of the rotor type airplane is placed in a test water pool;
the water area guide rails (200) are two steel rails parallel to the pool walls on the two sides of the test water area pool and are fixedly connected to the pool walls on the two sides of the test water area pool; the test water area adjusting bracket (300) is positioned above the test water area pool and can freely slide along the water area guide rail (200); the device can be used for model position adjustment and course control in the test process;
the wind speed simulation system (400) is positioned above the water surface of the test water area pool, and two ends of the wind speed simulation system are respectively fixedly connected with pool walls on two sides of the test water area pool, so that the wind load size meeting the test requirement can be simulated and output;
the wave generating system (500) is arranged at one end of a test water area pool close to the wind speed simulation system (400) and at two sides of the pool wall, and can be used for outputting and adjusting target parameter waves;
the test model (100) of the water surface floating characteristic of the rotor type aircraft is connected with the test water area adjusting bracket (300) through the model connecting part (600); in the test process, a tester can control and adjust the course and the position of the model through the model connecting part (600);
the sensor system (700) is arranged on the test model (100) for the water surface floating characteristic of the rotor type aircraft, is used for monitoring and acquiring the motion attitude information of the model in the floating process in real time, and is in information communication with the control system (800);
the control system (800) is arranged on the test water area adjusting bracket (300) and is in communication connection with the sensor system (700).
2. The rotary wing type aircraft water surface floating characteristic model test device according to claim 1, wherein the test water area adjusting bracket (300) comprises a test operation platform (301), a bottom reinforcing structure (302) and a pulley device (303); the test operation platform (301) is positioned on the upper plane of the test water area adjusting bracket (300); the bottom reinforcing structure (302) is a truss structure and is fixedly connected below the test operation platform (301); the pulley devices (303) are arranged at symmetrical positions on two sides below the test operation platform (301) and are fixedly connected with the lower part of the test operation platform (301); the pulley device (303) is connected with the water area guide rail (200) in a sliding fit manner.
3. The rotary wing type aircraft water surface floating characteristic model test device is characterized in that the wind speed simulation system (400) comprises a fan set (401), a fan mounting beam (402); the fan mounting beam (402) is used for mounting the fan unit (401), and two ends of the fan mounting beam (402) are respectively and fixedly connected with lateral pool walls on two sides of the test water pool; the fan set (401) is mounted below the fan mounting beam (402).
4. The rotary wing type aircraft water surface floating characteristic model test device is characterized in that the wave generating system (500) comprises a wave generating machine electric control part, an electric cylinder (502), a wave generating plate (503) and a wave eliminating plate (504); the wave generator electric control part can be used for inputting wave parameters and controlling the motion frequency and the motion thread of the electric cylinder (502); the electric cylinder (502) is fixedly connected with the wall of the test water area pool; the electric cylinder (502) is fixedly connected with the wave making plate (503); the electric cylinder (502) can drive the wave making plate (503) to perform mechanical motion, so as to realize the analog output of target wave parameters; the wave-absorbing plate (504) is hinged with lateral pool walls on two sides of the test water pool.
5. The device for testing the water surface floating characteristic of the rotary wing type aircraft according to claim 1, wherein the model connecting part (600) comprises a hanging ring (601), a Kevlar mooring rope (602); the suspension loop (601) is fixedly connected with the head end and the tail end of the test model (100) for the water surface floating characteristic of the rotor wing type airplane; one end of the Kevlar mooring rope (602) is fixedly connected with the hanging ring (601), and the other end of the Kevlar mooring rope is connected with the test water area adjusting support (300).
6. The rotary wing type aircraft water surface floating characteristic model test device is characterized in that the sensor system (700) comprises an inertial measurement unit (701), a wireless collector (702), a battery (703), a signal receiving antenna (704) and a power supply control switch (705); the inertial measurement unit (701) is fixed at the gravity center of the test model (100) of the water surface floating characteristic of the rotor type airplane; the wireless collector (702) and the battery (703) are fixed inside the test model (100) for the water surface floating characteristic of the rotor aircraft; the battery (703) is electrically connected with the inertia measurement unit (701), the wireless collector (702) and the signal receiving antenna (704) respectively and used for supplying power to the sensor inside the model; the signal receiving antenna (704) is fixed at the position of the top outside the test model (100) of the water surface floating characteristic of the rotor type airplane; the power supply control switch (705) is fixed at the position of the top of the outside of the test model (100) of the water surface floating characteristic of the rotor-wing aircraft, is used as a control switch of the battery (703), and is electrically connected with the battery (703).
7. A rotary wing type aircraft water surface floating characteristic model test device according to claim 1, characterized in that, the control system (800) comprises a remote control device (801), a data analysis system (803); the remote control device (801) is arranged on the test water area adjusting bracket (300) and used for sending a control signal to the sensor system (700); the data analysis system (803) is used for analyzing and demonstrating the effectiveness of the test data collected by the sensor system (700).
8. The device for testing the water surface floating characteristic model of the rotary-wing aircraft according to claim 7, wherein the control system (800) further comprises a camera system (802), and the camera system (802) can be one of or a combination of a fixed camera and a handheld camera, and is used for capturing a test state image of the water surface floating characteristic test model (100) of the rotary-wing aircraft during a test process.
9. A method for testing a water surface floating characteristic model of a rotary-wing aircraft, which is characterized in that the device for testing the water surface floating characteristic model of the rotary-wing aircraft according to any one of claims 1 to 7 is adopted, and comprises the following steps:
step 1: pre-debugging the operating parameters of the wind speed simulation system (400) and the wave generation system (500) to ensure that the simulated output wind speed and wave parameters meet the test precision requirement;
step 2: after the work preparation is completed, pulling up the wave-absorbing plate (504) in the wave-generating system (500) to enable the wave-absorbing plate (504) to be far away from the water surface and to be kept in a vertical state with the water surface of the pool of the test water area;
and step 3: after a power supply control switch (705) in the sensor system (700) is turned on, placing the test model (100) of the water surface floating characteristic of the rotor type aircraft in a test water area between the test water area adjusting bracket (300) and the wind speed simulation system (400) through the movable end of the Kevlar mooring rope (602) in the model connecting part (600), and adjusting the course of the test target course;
and 4, step 4: the wave generating system (500), the wind speed simulation system (400) and the control system (800) are started in sequence to work normally;
and 5: after waves and wind speed interference reach a test water area where the test model (100) of the water surface floating characteristic of the rotor plane is located, controlling the model to encounter the wave direction by adjusting and controlling the relative angle and the absolute length between the movable end of the Kevlar mooring rope (602) and the model; in the test process, the wireless collector (702) records parameters of a roll angle, a pitch angle, roll angle speed and pitch angle speed of the test model (100) of the water surface floating characteristic of the rotor type aircraft in real time, and the shooting system (802) records the whole motion process of the test model (100) of the water surface floating characteristic of the rotor type aircraft;
step 6: when the floating time of the test model (100) of the water surface floating characteristic of the rotor type aircraft reaches a target value, closing a remote control device (801) and a shooting system (802) in the wave generating system (500), the wind speed simulation system (400) and the control system (800), stopping the swinging and drifting of the test model (100) of the water surface floating characteristic of the rotor type aircraft, and fishing the test model (100) of the water surface floating characteristic of the rotor type aircraft through a Kevlar mooring rope (601) to recheck and adjust the test state;
and 7: and (2) adopting a data analysis system (803) in the control system (800), drawing a time-history change curve of the roll angle along with time by using roll angle, pitch angle, roll angle speed and pitch angle speed parameters acquired by the sensor system (700), evaluating the validity of the test state by analyzing the correlation between the change rule of the curve and the motion state of the model, and rejecting invalid data, wherein the recorded valid data comprises the change curve conditions of the weight, the gravity center position, the wind speed, the heading of the model, wave parameters, the roll angle, the pitch angle, the roll angle speed and the pitch angle speed along with time.
10. The method for testing the model of the water surface floating characteristics of the rotary-wing aircraft according to claim 9, wherein in the step 5, the relative position of the test water area adjusting bracket (300) on the water area guide rail (200) is adjusted so as to avoid the adverse collision interference between the test model (100) of the water surface floating characteristics of the rotary-wing aircraft and the test water area adjusting bracket (300) during the movement.
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