Device and method for launching a seaplane model from a towing pool

Abstract

A device for launching a seaplane model from a towing pool comprises a frame, the bottom of the frame being connected to a launch frame via a sliding module, the launch frame comprising a mounting plate fixedly connected below the sliding module, a support frame being connected below the mounting plate via a lifting mechanism, a hanging frame being hingedly connected to the bottom of the support frame, and an angle adjustment mechanism being provided between the hanging frame and the support frame, an aircraft model fixing mechanism being provided at the bottom of the hanging frame for fixing the aircraft model, the aircraft model fixing mechanism comprising a tail bracket and an adjustment mechanism for adjusting the angle between the tail bracket and the hanging frame, a tail bracket seat being provided in the middle of the tail bracket, an electromagnet being provided on the tail bracket for adsorbing the wings of the aircraft model, the angle adjustment mechanism comprising an angle adjustment push rod, the angle adjustment push rod passing through the support frame and being hinged to the angle adjustment plate, the angle adjustment plate being fixedly connected to the hanging frame, and an adjustment nut being provided at the position where the angle adjustment push rod passes through the support frame and being threadedly matched with the angle adjustment push rod.

Description

Technical Field

[0001] The invention relates to the technical field of hydrodynamic performance testing of a seaplane model, and in particular to a device and method for launching a seaplane model in a towing pool. Background Art

[0002] Seaplanes are aircraft capable of taking off and landing on water, and are widely used in both civilian and military applications. Landing on water is a critical step for seaplanes and a key indicator of their safety and operability. Therefore, conducting water landing tests to evaluate their performance and safety is crucial. However, launching a seaplane model from a towing tank requires navigating the model at a specified speed and along a predetermined test path according to test requirements. This process is subject to numerous uncertainties. The model's power cables, sensor signal output lines, and other control lines are connected to the towing vehicle. As the model is towed, these cables can easily affect its motion. Large trailers have limited speed setting accuracy, and the model's initial launch attitude angle adjustment range is limited. Therefore, existing towing tank systems are generally unsatisfactory for launching seaplane models. Summary of the Invention

[0003] In response to the above-mentioned technical problems, a device and method for launching a seaplane model from a towing pool are provided.

[0004] The technical means adopted in the present invention are as follows:

[0005] A device for launching a seaplane model from a towing pool, comprising a frame installed above the towing pool, wherein the bottom of the frame is connected to a launch frame via a sliding module, wherein the sliding module is used to drive the launch frame to move horizontally, wherein the launch frame comprises a mounting plate, wherein the mounting plate is fixedly connected to the bottom of the sliding module, wherein the bottom of the mounting plate is connected to a support frame via a lifting mechanism, wherein the lifting mechanism is used to adjust the height of the support frame, wherein a hanging frame is hingedly connected to the bottom of the support frame, and an angle adjustment mechanism is provided between the hanging frame and the support frame, wherein the angle adjustment mechanism is used to adjust the angle of the hanging frame, wherein the hanging frame is hingedly connected to the bottom of the support frame, wherein the lifting frame is hingedly connected to the bottom of the support frame, and an angle adjustment mechanism is provided between the hanging frame and the support frame, wherein the angle adjustment mechanism is used to adjust the angle of the hanging frame, wherein the lifting frame is hingedly connected to the bottom of the support ... An aircraft model fixing mechanism for fixing the aircraft model is provided at the bottom of the mounting frame, the aircraft model fixing mechanism includes a tail bracket and an adjustment mechanism for adjusting the angle between the tail bracket and the hanging frame, a tail bracket seat is provided in the middle of the tail bracket, the tail bracket seat is used to support the tail of the aircraft model, the tail bracket is provided with an electromagnet for adsorbing the wings of the aircraft model, the angle adjustment mechanism includes an angle adjustment push rod, the angle adjustment push rod passes through the support frame and is hinged to the angle adjustment plate, the angle adjustment plate is fixedly connected to the hanging frame, and the angle adjustment push rod is provided with an adjustment nut that is threadedly matched with the angle adjustment push rod at the place where it passes through the support frame.

[0006] Furthermore, the sliding module includes a slide rail base, a slide rail, a slider and a linear motor. The slide rail base is installed under the frame, the slide rail is fixedly installed on the lower surface of the slide rail base, the slider is slidably installed on the slide rail, the mounting plate is fixedly connected to the slider, and the linear motor is used to drive the slider to move along the slide rail.

[0007] Furthermore, the lifting mechanism includes a wire rope, a winch drum, a lifting handwheel, and a limit rod. The top end of the limit rod is fixedly connected to the bottom of the mounting plate, the bottom end of the limit rod passes through the support frame, and a limit nut is installed at the bottom end of the limit rod. The support frame slides with the limit rod, the winch drum is installed on the support frame, the top end of the wire rope is fixedly connected to the mounting plate, the bottom end of the wire rope is wrapped around the winch drum, and the winch drum is connected to the lifting handwheel with a two-way ratchet, the lifting handwheel is installed at the bottom of the support frame, and the lifting handwheel drives the wire rope to move by rotating the winch drum.

[0008] Furthermore, the adjustment mechanism includes a stock limit frame, the top of the stock limit frame is hinged to the lifting frame, and the lower part of the stock limit frame is provided with a first oblong hole, the stock frame is provided with a second oblong hole, the stock frame is hinged to the lifting frame, a bolt passes through the first oblong hole and the second oblong hole and is slidably connected to the first oblong hole and the second oblong hole, and the end of the bolt has a locking nut.

[0009] Furthermore, it also includes a spring, and both ends of the spring are respectively connected to the support frame and the angle adjustment plate.

[0010] Furthermore, the angle scale is fixed on the hanging frame, and a vertically arranged pointer is rotatably connected to the angle scale.

[0011] Furthermore, the frame includes legs and a bracket, the legs are respectively arranged around the bottom of the bracket, and the legs are fixedly installed on both sides of the towing pool.

[0012] Furthermore, an anti-slip device is included, and both ends of the anti-slip device are connected to the support frame and the angle adjustment plate respectively.

[0013] Furthermore, a magnetic grid for feeding back the position of the slider is installed on one side of the slide rail.

[0014] A method for launching a seaplane towing pool model comprises the following steps:

[0015] S1. Move the support frame to a specified position by adjusting the sliding module, and adjust the height between the support frame and the towing pool by adjusting the lifting mechanism;

[0016] S2, turning on the electromagnet to fix the model aircraft to the model aircraft fixing mechanism, adjusting the adjustment mechanism to rotate the tail bracket until the tail bracket contacts the tail of the model aircraft;

[0017] S3, adjusting the initial launch attitude angle of the aircraft model by the angle adjustment mechanism;

[0018] S4. After setting the speed and release area of ​​the model aircraft, the sliding module drives the launcher to slide horizontally at a preset speed. After reaching the release area, the electromagnet is disconnected to release the model aircraft.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The present invention provides a device and method for launching a seaplane towing pool model. A linear motor drives the launch frame to move, thereby achieving a higher speed and improving speed accuracy. By providing the angle adjustment push rod and the angle dial, a larger adjustment range of the launch initial attitude angle of the launch frame is achieved, thereby meeting the launch test requirements of the seaplane model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of a device for launching a seaplane model from a towing pool, provided in this specific embodiment.

[0023] Figure 2 This is a schematic diagram of the partial structure of a device for launching a seaplane model from a towing pool, provided in this specific embodiment.

[0024] In the figure: 1. Frame; 2. Towing pool; 3. Slide rail; 4. Model aircraft; 5. Slide rail base; 6. Slider; 7. Mounting plate; 8. Limit rod; 9. Wire rope; 10. Limit nut; 11. Angle adjustment rod; 12. Anti-slip device; 13. Spring; 14. Lifting handwheel; 15. Angle dial; 16. Tail stock limit frame; 17. Tail stock frame; 18. Tail stock seat; 19. Support frame; 20. Hinge; 21. Lifting frame; 22. Electromagnet; 23. Wire drum; 24. Angle adjustment plate; 25. Bracket; 26. Leg; 161. First oblong hole; 171. Second oblong hole. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0029] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0030] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0031] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0032] like Figures 1-2The present specific embodiment discloses a device for launching a seaplane model in a towing pool, comprising a frame 1 installed above a towing pool 2, wherein the bottom of the frame 1 is connected to a launch frame via a sliding module, the sliding module is used to drive the launch frame to move horizontally, the launch frame comprises a mounting plate 7, the mounting plate 7 is fixedly connected to the bottom of the sliding module, the bottom of the mounting plate 7 is connected to a support frame 19 via a lifting mechanism, the lifting mechanism is used to adjust the height of the support frame 19, a hanging frame 21 is hinged at the bottom of the support frame 19, and an angle adjustment mechanism is provided between the hanging frame 21 and the support frame 19, the angle adjustment mechanism is used to adjust the angle of the hanging frame 21, an aircraft model fixing mechanism for fixing the aircraft model 4 is provided at the bottom of the hanging frame 21, and the angle engraving is fixed on the hanging frame 21 A dial 15 is rotatably connected to a vertically mounted pointer, which displays the angle of the suspension frame 21. The aircraft model securing mechanism includes a tail bracket 17 and an adjustment mechanism for adjusting the angle between the tail bracket 17 and the suspension frame 21. A tail bracket 18 is located in the middle of the tail bracket 17, which supports the tail of the aircraft model 4. The tail bracket 17 is equipped with an electromagnet 22 for attracting the wings of the aircraft model 4. A thin iron sheet matching the electromagnet 22 is attached to a designated position on the upper surface of the aircraft model 4. The electromagnet 22 is fixed to the thin iron sheet by attraction, and the aircraft model 4 is released by controlling the on / off of the electromagnet 22 via an electrical signal. The program sets the electromagnet 22 to de-energize after the receiving module transmits a signal, releasing the aircraft model 4. The response time for de-energizing the electromagnet 22 is approximately 3ms.

[0033] The angle adjustment mechanism includes an angle adjustment push rod 11, which passes through the support frame 19 and is hinged to the angle adjustment plate 24. The angle adjustment plate 24 is fixedly connected to the hanging frame 21. The angle adjustment push rod 11 is provided with an adjustment nut threadedly matched with the angle adjustment push rod 11 at the place where it passes through the support frame 19.

[0034] The sliding module includes a slide rail base 5, a slide rail 3, a slider 6 and a linear motor. The slide rail base 5 is installed under the frame 1, the slide rail 3 is fixedly installed on the lower surface of the slide rail base 5, the slider 6 is slidably installed on the slide rail 3, the mounting plate 7 is fixedly connected to the slider 6, and the linear motor is used to drive the slider 6 to move along the slide rail 3.

[0035] The lifting mechanism includes a wire rope 9, a winch drum 23, a lifting handwheel 14, and a limiting rod 8. The top end of the limiting rod 8 is fixedly connected to the bottom of the mounting plate 7, the bottom end of the limiting rod 8 passes through the support frame 19, and a limiting nut 10 is installed at the bottom end of the limiting rod 8. The support frame 19 slides with the limiting rod 8. The winch drum 23 is installed on the support frame 19. The top end of the wire rope 9 is fixedly connected to the mounting plate 7, the bottom end of the wire rope 9 is wound around the winch drum 23, and the winch drum 23 is connected to the lifting handwheel 14 with a two-way ratchet. The lifting handwheel 14 is installed at the bottom of the support frame 19. The lifting handwheel 14 drives the wire rope 9 to move by rotating the winch drum 23.

[0036] The adjustment mechanism includes a tail stock limiting frame 16, the top of the tail stock limiting frame 16 is hinged to the hanging frame 21, and the lower part of the tail stock limiting frame 16 is provided with a first oblong hole 161, and the tail stock 17 is provided with a second oblong hole 171. The tail stock 17 is hinged to the hanging frame 21, and the bolt passes through the first oblong hole 161 and the second oblong hole 171 and is slidably connected to the first oblong hole 161 and the second oblong hole 171, and the end of the bolt is provided with a locking nut. By adjusting the position of the bolt in the first oblong hole 161 and the second oblong hole 171 and locking it with the locking nut, the tail stock 17 is tilted up or down, thereby realizing the initial installation angle of the tail stock 17 to adapt to the size requirements of different types of aircraft models 4.

[0037] The frame includes legs 26 and a bracket 25. The legs 26 are provided on four sides below the bracket 25. The legs 26 are fixedly mounted on both sides of the towing pool 2. The legs 26 and the bracket 25 are connected and fixed using a dedicated connection kit, which can be spliced ​​and adjusted according to the size and shape of the launch area. The height of the frame 1 can be adjusted by adjusting the height of the legs 26 and the connection kit.

[0038] The two ends of the anti-slip device 12 are respectively connected to the support frame 19 and the angle adjustment plate 24, and are used to fix the position of the angle adjustment plate 24. The two ends of the spring 13 are respectively connected to the support frame 19 and the angle adjustment plate 24, and the spring 13 is used to assist in fixing the angle adjustment plate 24. The anti-slip device is specifically an anti-slip hook, which is divided into a straight section and a hook section. The straight section is fixedly connected to the support frame 19, and the hook section is detachably connected to the angle adjustment plate 24 through the mounting hole of the angle adjustment plate 24.

[0039] A magnetic grid for feedback of the position of the slider 6 is installed on one side of the slide rail 3. The magnetic grid consists of a plurality of magnets arranged in an array along the slide rail 3 to feedback the path signal of the slider 6. The length of the slide rail 3 is 6m. The slider 6 can move linearly along the slide rail 3. The linear motor can provide 2G acceleration with a maximum load of 10kg. The linear motor inputs 220V unidirectional AC power.

[0040] During use, the launch frame is driven to rise to the specified height by turning the lifting handwheel. The height adjustment range of the launch frame is 0 to 300 mm. The anti-slip device 12 is released, and then the adjustment push rod 11 is rotated to adjust the angle adjustment plate 24 to drive the hoisting frame 21 to rotate, and the angle dial 15 is observed. When the pointer on the angle dial 15 indicates the target scale, the angle adjustment push rod 11 is locked. At the same time, the anti-slip device 12 is tightened. The control system controls the electromagnet 22 to adsorb the aircraft model 4 through an electrical signal, and supports the tail of the aircraft model 4 with the tail support seat 18. When the encoder on the linear motor passes through the magnetic grid, the magnetic field signal generated by the magnet is read. When the slider 6 reaches the pre-set launch point, the encoder feeds back a signal to the control system, and the control system controls the disconnection of the electromagnet 22 through an electrical signal to release the aircraft model 4.

[0041] This specific embodiment also provides a method for launching a seaplane towing pool model, comprising the following steps:

[0042] S1. Move the support frame 19 to a specified position by adjusting the sliding module, and adjust the height between the support frame 19 and the towing pool 2 by adjusting the lifting mechanism;

[0043] S2, turning on the electromagnet 22 to fix the model aircraft 4 to the model aircraft fixing mechanism, adjusting the adjustment mechanism to rotate the tail bracket 17 until the tail bracket seat 18 contacts the tail of the model aircraft 4;

[0044] S3, adjusting the initial launch attitude angle of the aircraft model 4 by the angle adjustment mechanism;

[0045] S4. After setting the speed and release area of ​​the aircraft model 4, the sliding module drives the launcher to slide horizontally at a preset speed. After reaching the release area, the electromagnet 22 is disconnected to release the aircraft model 4.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for launching a seaplane model from a towing pool, characterized in that: The cam is connected to the support frame by a lifting mechanism, and the lifting mechanism is used to adjust the height of the support frame. The bottom of the support frame is hinged with a hanging frame, and an angle adjustment mechanism is provided between the hanging frame and the support frame. The angle adjustment mechanism is used to adjust the angle of the hanging frame. The bottom of the hanging frame is provided with an aircraft model fixing mechanism for fixing the aircraft model. The aircraft model fixing mechanism includes a tail bracket and an adjustment mechanism for adjusting the angle between the tail bracket and the hanging frame. The middle part of the tail bracket is provided with a tail bracket seat, the tail bracket seat is used to support the tail of the aircraft model, and the tail bracket is provided with an electromagnet for adsorbing the wings of the aircraft model. The angle adjustment mechanism includes an angle adjustment push rod, the angle adjustment push rod passes through the support frame and is hinged to the angle adjustment plate, and the angle adjustment plate is fixedly connected to the hanging frame. The angle adjustment push rod is provided with an adjusting nut which is threadedly engaged with the angle adjustment push rod at the place where it passes through the support frame; the sliding module comprises a slide rail base, a slide rail, a slider and a linear motor, the slide rail base is installed below the frame, the slide rail is fixedly installed on the lower surface of the slide rail base, the slider is slidably mounted on the slide rail, the mounting plate is fixedly connected to the slider, and the linear motor is used to drive the slider to move along the slide rail; the lifting mechanism comprises a wire rope, a winch drum, a lifting handwheel and a limit rod, the top end of the limit rod is fixedly connected to the bottom of the mounting plate, the bottom end of the limit rod passes through the support frame, and a limit nut is installed at the bottom end of the limit rod, the support frame and the limit rod are slidably engaged, the winch drum is installed on the support frame, the top end of the wire rope is fixedly connected to the mounting plate, the bottom end of the wire rope is wound around the winch drum, and the winch drum is connected to the lifting handwheel with a bidirectional ratchet, the lifting handwheel is installed at the bottom of the support frame, and the lifting handwheel drives the wire rope to move by rotating the winch drum.

2. The device for launching a seaplane model from a towing pool according to claim 1, characterized in that: The adjustment mechanism includes a stock limiting frame, the top of the stock limiting frame is hinged to the hanging frame, and a first oblong hole is provided at the lower portion of the stock limiting frame, the stock is provided with a second oblong hole, the stock is hinged to the hanging frame, a bolt passes through the first oblong hole and the second oblong hole and is slidably connected to the first oblong hole and the second oblong hole, and a locking nut is provided at the end of the bolt.

3. The device for launching a seaplane model from a towing pool according to claim 1, characterized in that: It also includes a spring, with two ends of the spring connected to the support frame and the angle adjustment plate respectively.

4. The device for launching a seaplane model from a towing pool according to claim 1, characterized in that: The angle scale is fixed on the hanging frame, and a vertically arranged pointer is rotatably connected to the angle scale.

5. The device for launching a seaplane model from a towing pool according to claim 1, characterized in that: The frame includes legs and a bracket. The legs are respectively arranged around the bottom of the bracket, and the legs are fixedly installed on both sides of the towing pool.

6. The device for launching a seaplane model from a towing pool according to claim 1, characterized in that: It also includes an anti-slip device, both ends of which are connected to the support frame and the angle adjustment plate respectively.

7. The device for launching a seaplane model from a towing pool according to claim 1, characterized in that: A magnetic grid for feeding back the position of the slider is installed on one side of the slide rail.

8. A method for launching a seaplane towing pool model, based on the device according to any one of claims 1 to 7, characterized in that: The steps include: S1. Move the support frame to a specified position by adjusting the sliding module, and adjust the height between the support frame and the towing pool by adjusting the lifting mechanism; S2, turning on the electromagnet to fix the model aircraft to the model aircraft fixing mechanism, adjusting the adjustment mechanism to rotate the tail bracket until the tail bracket contacts the tail of the model aircraft; S3, adjusting the initial launch attitude angle of the aircraft model by the angle adjustment mechanism; S4. After setting the speed and release area of ​​the model aircraft, the sliding module drives the launcher to slide horizontally at a preset speed. After reaching the release area, the electromagnet is disconnected to release the model aircraft.

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