Sequential control device based on electromagnetic gun launching bird bombs to impact rotating blades
By using a timing control device for launching bird projectiles from an electromagnetic railgun, and employing a rotation system and synchronizer, the impact position of the bird projectile on the blades can be precisely controlled within a vacuum chamber. This solves the problem of low accuracy in existing rotating blade tests and reduces testing costs.
Patent Information
- Application Number
- CN202520197848.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-08
AI Technical Summary
Existing technologies make it difficult to precisely control the position of bird strikes on rotating blades, resulting in problems such as low control accuracy, poor repeatability, and high cost in bird-catching tests of turbine engines.
The device employs a timing control system for launching bird projectiles based on an electromagnetic railgun. By setting a rotation system and sensors inside a vacuum chamber and using a synchronizer to set a delay time, it precisely controls the position of the bird projectile impacting the blades, and combines this with a high-speed camera to record the impact process.
It enables precise control of the position of the bird strike on the blade, improves the test accuracy, reduces the number of blades required to assemble the test rotor, and lowers the test cost.
Smart Images
Figure CN223727421U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to aerospace engine testing device technical field, concretely relates to a kind of timing control device and method based on electromagnetic gun launch bird bomb device rotating blade. BACKGROUND
[0002] Many accidents have occurred in aviation history due to engine bird ingestion, resulting in aircraft damage and loss of life. Therefore, it is crucial to conduct bird ingestion tests to ensure aviation safety.
[0003] The "Air Engine Airworthiness Regulations" 33.76 bird ingestion clause requires that turbine engines must undergo bird ingestion tests, using bird bombs that hit the key positions of rotating blades to ensure that turbine engines meet airworthiness requirements.
[0004] Currently, most bird ingestion tests use air cannons for launching. This method can easily achieve the test purpose under the condition of bird bomb hitting static blades. However, for rotating blades, due to the large difference between bird bomb launch time scale and fan blade rotation frequency, it is difficult to accurately control the expected bird bomb hitting blade position. Therefore, through repeated tests or increasing the number of blades, the probability of bird bomb hitting blades is increased. Therefore, the control accuracy of bird bomb hitting rotating blades by air cannon launching is not high, and the repeatability is poor, which greatly affects the cost and test accuracy of bird impact test. SUMMARY
[0005] To overcome the shortcomings of the prior art, the utility model provides a timing control device for launching bird bomb to hit rotating blades based on electromagnetic gun. This technical solution can accurately control the position of bird bomb hitting blades, improve test accuracy, reduce the number of blades required for test rotor assembly, and reduce test cost.
[0006] The timing control device for launching bird bomb to hit rotating blades based on electromagnetic gun includes a vacuum chamber, a vacuum pumping system, and a rotating system. The vacuum pumping system can pump the vacuum chamber to a vacuum state. The vacuum chamber is provided with a bird bomb launching device. A capacitor device is connected to the bird bomb launching device to control the charging and discharging of the bird bomb launching device. The vacuum chamber is provided with a camera.
[0007] The rotating system is arranged in the vacuum chamber and can move outside the vacuum chamber. The rotating system includes a vertical plate, a rotating device arranged on the vertical plate, a test piece rotor detachably connected to the output shaft of the rotating device, a blade connected to the test piece rotor, an inductor mounted on the blade, and a sensor arranged on the vertical plate. When the inductor corresponds to the sensor, the sensor can detect the inductor and send a signal to a controller and a synchronizer. The synchronizer is connected to the controller. The controller can control the start of the capacitor device. The synchronizer can set the delay time of the start of the capacitor device.
[0008] Preferably, an amplifier is further included, which is connected with the sensor, and the amplifier can amplify the signal sent by the sensor and send it to the controller and the synchronizer.
[0009] Preferably, a linear motion mechanism is arranged in the vacuum chamber, which is connected with the vertical plate, and the linear motion mechanism can drive the vertical plate to move.
[0010] Preferably, an openable door is arranged on one side of the vacuum chamber.
[0011] Preferably, three blades are connected to the test rotor, and the inductor is arranged on the middle blade.
[0012] Preferably, the sensor is a laser sensor.
[0013] Preferably, the bird bomb launching device is an electromagnetic gun bird bomb launching device.
[0014] Preferably, the camera is a high-speed camera.
[0015] The time sequence control method based on the electromagnetic gun bird bomb hitting the rotating blade includes the following steps:
[0016] A. According to the test requirements, the bird bomb speed V is determined bird , according to the distance between the bird bomb launching device and the blade impact position, the bird bomb flight time T bird is determined;
[0017] B. According to the test requirements, the test rotor speed V rotor is determined, the time T rotor for the blade to rotate one revolution is obtained rotor , the synchronizer delay time T delay is obtained, T delay = T rotor * X round + T rotor / T bird , X round is the number of revolutions;
[0018] C. Install the test rotor, move the vertical plate to the vacuum chamber, and seal the vacuum chamber;
[0019] D. Start the vacuum system to make the vacuum chamber reach the test required vacuum degree;
[0020] E. Set the synchronizer delay time T delay , start the rotating device to drive the test rotor to rotate, and open the sensor when the test rotor reaches V rotor and stabilizes.
[0021] F、When the blade passes through the sensor, the sensor detects the inductor and sends a signal to the controller and the synchronizer;
[0022] G、At T delay Afterwards, the controller controls the capacitor device to start charging and launching the bird bomb device, and simultaneously starts the camera, which takes the image of the bird bomb hitting the blade.
[0023] The beneficial effects of the utility model are shown in the following: the bird bomb can reach the required speed in a very short time through the electromagnetic gun technology in the technical scheme, the rotating system is arranged in the vacuum chamber and can move to the outside of the vacuum chamber, the test rotor is convenient to install, and the test rotor is located in the vacuum chamber during the test, the flight distance of the bird bomb is shortened, the floor area of the whole device is reduced, the blade rotating position of the test rotor is used as the trigger condition, the delay time is set through the synchronizer, the position of the bird bomb hitting the blade is controlled, the precise control of the bird bomb hitting the blade position at different speeds is realized, the test precision is improved, the number of blades required to be assembled by the test rotor is reduced, and the test cost is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings required to be used in the specific embodiment or the prior art description. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual proportion.
[0025] Figure 1 It is the principle block diagram of the utility model;
[0026] Figure 2 It is the left view of the rotating system in the utility model;
[0027] Figure 3 It is the front view of the rotating system in the utility model;
[0028] Figure 4 It is the front view of the rotating system when the blade rotates to the bottom in the utility model.
[0029] In the drawings, 1-vacuum chamber, 2-bird bomb launching device, 3-capacitor device, 4-evacuation system, 5-vertical plate, 6-rotating device, 7-test rotor, 8-blade, 9-inductor, 10-sensor, 11-amplifier, 12-controller, 13-synchronizer, 14-camera. DETAILED DESCRIPTION
[0030] The technical scheme of the utility model will be described below in detail with reference to the drawings. The following examples are only used to make the technical scheme of the utility model clearer, and therefore only serve as examples, but cannot limit the protection scope of the utility model.
[0031] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meanings understood by the technical personnel in the field to which the utility model belongs.
[0032] Example 1
[0033] As Figures 1-4 shown, the timing control device for rotating blades of a bird projectile launching device based on an electromagnetic gun is provided in the present example, comprising a vacuum chamber 1, a vacuum extraction system 4, a rotating system, the vacuum extraction system 4 can extract the vacuum chamber 1 to a vacuum state, a bird projectile launching device 2 is arranged in the vacuum chamber 1, a capacitor device 3 is connected with the bird projectile launching device 2 for controlling charging and discharging of the bird projectile launching device 2, a camera 14 is arranged in the vacuum chamber 1;
[0034] The rotating system is arranged in the vacuum chamber 1 and can move out of the vacuum chamber 1, the rotating system comprises a vertical plate 5, a rotating device 6 is arranged on the vertical plate 5, a test piece rotor 7 can be detachably connected on the output shaft of the rotating device 6, a blade 8 is connected on the test piece rotor 7, an inductor 9 is installed on the blade 8, a sensor 10 is arranged on the vertical plate 5, when the inductor 9 corresponds to the sensor 10, the sensor 10 can detect the inductor 9 and send a signal to a controller 12 and a synchronizer 13, the synchronizer 13 is connected with the controller 12, the controller 12 can control starting of the capacitor device 3, and the synchronizer 13 can set a delay time of starting of the capacitor device 3.
[0035] The specific working principle is as follows:
[0036] According to the test requirement, the bird projectile speed V bird is determined, according to the distance between the bird projectile launching device 2 and the impact position of the blade 8, the bird projectile flight time T bird is determined.
[0037] According to the test requirement, the rotating speed V rotor of the test piece rotor 7 is determined, the time T rotor of one rotation of the blade 8 is obtained = 1 / V rotor , the delay time T delay of the synchronizer 13 is obtained, T delay =T rotor *X round +T rotor / 2-T bird , X round is the number of rotations.
[0038] Install the test rotor 7 on the output shaft of the rotating device 6, move the vertical plate 5 into the vacuum chamber 1, and seal the vacuum chamber 1;
[0039] Start the vacuum system 4 to make the vacuum chamber 1 reach the required test vacuum degree;
[0040] Set the delay time T of the synchronizer 13 delay Start the rotating device 6 to drive the test rotor 7 to rotate, and when the rotating speed of the test rotor 7 reaches V rotor and stabilizes, open the sensor 10;
[0041] When the blade 8 passes through the sensor 10, the sensor 10 detects the inductor 9 and sends a signal to the controller 12 and the synchronizer 13;
[0042] After T delay , the controller 12 controls the capacitor device 3 to start charging and launching the bird bomb device 2, and at the same time starts the camera 14 to shoot the image of the bird bomb hitting the blade 8.
[0043] The bird bomb hits the position shown in Figure 4 , and by launching the bird bomb through electromagnetic gun technology, the bird bomb can reach the required test speed in a very short time. By setting the rotating system in the vacuum chamber 1 and being able to move out of the vacuum chamber 1, it is convenient to install the test rotor 7, and during the test, it is located in the vacuum chamber 1, which shortens the flight distance of the bird bomb and reduces the floor area of the overall device. The rotating position of the blade 8 of the test rotor 7 is used as the trigger condition, and the delay time is set through the synchronizer 13, so as to control the position of the bird bomb hitting the blade 8. In this way, the precise control of the bird bomb hitting the blade 8 at different speeds is realized, the test precision is improved, the number of blades required for assembling the test rotor is reduced, and the test cost is reduced.
[0044] In this embodiment, different bird bomb speeds V bird are controlled by controlling the charging and discharging of the capacitor device 3.
[0045] In this embodiment, the bird bomb flight time T bird According to the experimental results, after the device is completed, different speed experiments can be carried out. After the positions of the vertical plate 5 and the bird bomb launching device 2 in the vacuum chamber 1 are fixed, the time of different bird bomb speeds V bird hitting the blade 8 after the bird bomb launching device 2 is started can be measured. During actual testing, different bird bomb speeds V bird and bird bomb flight times T bird can be selected. The advantage is that the bird bomb flight time T bird is accurate, so that the delay time Tdelay The position of the bird bomb hitting the blade 8 is accurately set and accurately controlled.
[0046] The embodiment also includes an amplifier 11 connected with the sensor 10, which can amplify the signal sent by the sensor 10 and send it to the controller 12 and the synchronizer 13.
[0047] The embodiment provides a linear motion mechanism in the vacuum chamber 1, which is connected with the vertical plate 5 and can drive the vertical plate 5 to move.
[0048] The embodiment provides an openable hatch on one side of the vacuum chamber 1. The embodiment provides an openable hatch on the back side of the vacuum chamber 1. The linear motion mechanism can drive the vertical plate 5 to move forward and backward. When the test rotor 7 needs to be installed, the hatch is opened, the vertical plate 5 is moved outside the chamber for installation, and when testing, the vertical plate 5 is moved into the chamber, and then the hatch is closed. This can facilitate the installation of the test rotor 7 and shorten the flight distance of the bird bomb during testing, thereby reducing errors. The linear motion mechanism can be a pneumatic cylinder. The rotating device 6 in the embodiment is an electric motor.
[0049] The embodiment provides three blades 8 connected to the test rotor 7, and the sensor 9 is arranged on the middle blade 8.
[0050] The sensor 10 in the embodiment is a laser sensor.
[0051] The bird bomb launching device 2 in the embodiment is an electromagnetic gun bird bomb launching device. The electromagnetic gun bird bomb launching device can make the bird bomb reach the expected speed in a very short time, reduce errors, increase test repeatability, improve test intensity, reduce the number of blades 8 that need to be assembled on the test rotor 7, and reduce test costs.
[0052] The camera 14 in the embodiment is a high-speed camera.
[0053] Embodiment 2
[0054] The embodiment provides a timing control method for bird bomb hitting rotating blades based on an electromagnetic gun, which includes the following steps:
[0055] A. According to the test requirements, the bird bomb speed V is determined bird , according to the distance between the bird bomb launching device 2 and the blade 8 hitting position, the bird bomb flight time T bird is determined;
[0056] B. According to the test requirements, the test rotor 7 speed V rotor is determined, and the time T rotor for the blade 8 to rotate one revolution is obtained.rotor The delay time T of synchronizer 13 is obtained. delay T delay =T rotor *X round +T rotor / 2-T bird X round The number of rotations;
[0057] C. Install the test specimen rotor 7, move the vertical plate 5 inside the vacuum chamber 1, and seal the vacuum chamber 1.
[0058] D. Start the vacuum system 4 to bring the vacuum chamber 1 to the required vacuum level for the test;
[0059] E. Set the delay time T of synchronizer 13 delay Start the rotating device 6 to drive the test specimen rotor 7 to rotate. When the rotational speed of the test specimen rotor 7 reaches V... rotor After stabilization, turn on sensor 10;
[0060] F. When the blade 8 passes the sensor 10, the sensor 10 detects the sensor 9 and sends a signal to the controller 12 and the synchronizer 13.
[0061] G, in T delay Subsequently, the controller 12 controls the capacitor device 3 to start charging the bird-launching device 2 and launch the bird projectile, and at the same time activates the camera 14 to capture images of the bird projectile hitting the blade 8.
[0062] In this embodiment, the birdshot flight time T bird Based on the experimental results, after the device is manufactured, experiments at different speeds can be conducted. After the positions of the vertical plate 5 and the bird-launching device 2 are fixed inside the vacuum chamber 1, the speeds V of different bird launchers can be measured. bird During actual testing, the time it takes for the bird projectile to strike the blade 8 after the bird projectile launching device 2 is activated was compared with different bird projectile velocities V. bird and bird bullet flight time T bird Simply select the appropriate option. The advantage of this is that it allows for the realization of the bird missile's flight time T. bird The precision ensures that the delay time T of synchronizer 13 is accurate. delay Precise settings.
[0063] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.
Claims
1. A timing control device for launching a bird projectile to hit a rotating blade based on an electromagnetic cannon, characterized in that, The application relates to a bird bomb launching device, which comprises a vacuum cabin (1), a vacuum system (4) capable of vacuumizing the vacuum cabin (1), a rotating system, a bird bomb launching device (2) arranged in the vacuum cabin (1), a capacitor device (3) connected with the bird bomb launching device (2) for controlling the charging and discharging of the bird bomb launching device (2), and a camera (14) arranged in the vacuum cabin (1). The rotating system is arranged in the vacuum cabin (1) and can move out of the vacuum cabin (1), the rotating system comprises a vertical plate (5), a rotating device (6) is arranged on the vertical plate (5), a test rotor (7) is detachably connected to an output shaft of the rotating device (6), a blade (8) is connected to the test rotor (7), an inductor (9) is arranged on the blade (8), a sensor (10) is arranged on the vertical plate (5), when the inductor (9) corresponds to the sensor (10), the sensor (10) can detect the inductor (9) and send a signal to a controller (12) and a synchronizer (13), the synchronizer (13) is connected with the controller (12), the controller (12) can control the starting of the capacitor device (3), and the synchronizer (13) can set the delay time of the starting of the capacitor device (3).
2. The timing control device for launching bird impact rotating blades based on electromagnetic gun according to claim 1, characterized in that, The bird bomb launching device further comprises an amplifier (11) connected with the sensor (10), the amplifier (11) can amplify the signal sent by the sensor (10) and then send the signal to the controller (12) and the synchronizer (13).
3. The timing control device for launching bird impact rotating blades based on electromagnetic gun according to claim 1, characterized in that, A linear motion mechanism is arranged in the vacuum cabin (1) and connected with the vertical plate (5), the linear motion mechanism can drive the vertical plate (5) to move.
4. The timing control device for launching bird impact rotating blades based on electromagnetic cannon according to claim 1, characterized in that, A cabin door capable of being opened is arranged on one side of the vacuum cabin (1).
5. The timing control device for launching bird impact rotating blades based on electromagnetic cannon according to claim 1, characterized in that, Three blades (8) are connected to the test rotor (7), and the inductor (9) is arranged on the middle blade (8).
6. The timing control device for launching bird impact rotating blades based on electromagnetic cannon according to claim 1, characterized in that, The sensor (10) is a laser sensor.
7. The timing control device for launching bird impact rotating blades based on electromagnetic cannon according to claim 1, characterized in that, The bird bomb launching device (2) is an electromagnetic gun bird bomb launching device.
8. The timing control device for launching bird impact rotating blades based on electromagnetic cannon according to claim 1, characterized in that, The camera (14) is a high-speed camera.