Buoy device based on lower surfaces of wings of hull type seaplane
By designing float devices in hull-type seaplanes and allowing them to change position during takeoff, landing, and flight, the negative impact of float devices on cruise performance has been resolved, resulting in superior aerial flight performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-10
AI Technical Summary
The floats on a hull-mounted seaplane increase drag during flight, interfere with the airflow field of the wing, and affect cruise performance.
Design a float device that uses a strut and hinge structure to flip the float under the wing during takeoff and landing, and flips it to the same height as the wing during flight, reducing aerodynamic drag and retracting it into the wing to form a new wingtip design.
It reduces aerodynamic drag during flight, minimizes flow field disturbances, and improves cruise performance and aerodynamic efficiency.
Smart Images
Figure CN121626420A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of seaplane design, and particularly relates to a float device based on the lower surface of a wing of a hull type seaplane. BACKGROUND
[0002] A seaplane refers to an aircraft capable of taking off and landing on water surfaces (such as lakes, rivers or oceans), and some seaplanes have the ability to take off and land on land airports. Seaplanes are usually equipped with floats, skids or hull designs to meet the amphibious requirements.
[0003] Seaplanes mainly include three types: ①float type seaplane, the float is installed under the fuselage to provide buoyancy, which is suitable for taking off and landing on calm water; ②skid type seaplane, which uses skids instead of wheels, and is suitable for taking off and landing on ice or snow; and ③hull type seaplane, which has a flat bottom fuselage and directly slides on the water surface, and has a larger load capacity.
[0004] The special taking-off and landing mode endows seaplanes with functions and purposes different from those of conventional taking-off and landing mode aircrafts, and seaplanes have functions such as rescue and emergency medical transport, sightseeing, law enforcement and monitoring, scientific research and investigation, fishery and resource exploration, and military use.
[0005] The hull type seaplane is the most stable and has the largest load capacity among the three types of seaplanes, and its fuselage design is similar to a ship body, which directly contacts the water surface through a streamlined hull to realize taking off and landing. The hull type seaplane often adopts a large-span wing design, and in order to ensure that the wing tip does not touch the water surface during the taking-off and landing process of the aircraft, some seaplanes adopt a float design near the wing tip.
[0006] The float device of the hull type seaplane is composed of a float and a connecting device. The float is used to generate buoyancy and has a constraint limiting effect on the rolling angle range during the taking-off and landing process of the aircraft. The connecting device connects the float and the wing, and ensures the strength of the wing and the float.
[0007] During the flight of the aircraft in the air, the float device of the hull type seaplane has a negative impact on the flight performance. On the one hand, the float and the connecting device increase the drag of the aircraft, and for a given flight height and flight speed, the engine consumes more fuel weight. On the other hand, the float and the connecting device interfere with the flow field of the wing tip, increasing the vibration of the aircraft wing. Finally, the float and the connecting device affect the cruise design point of the aerodynamic force, limiting the cruise speed of the aircraft.
[0008] For the float device of the hull type seaplane, the smaller the negative impact on the cruise performance under the premise of ensuring a reasonable rolling angle range during the taking-off and landing process of the aircraft, the better.
[0009] Therefore, under the condition of ensuring the safety of take-off and landing, the following key requirements exist: one is to reduce the aerodynamic resistance of the float device during the flight of the aircraft in the air, two is to reduce the disturbance of the float device to the flow field near the wing during the flight of the aircraft in the air, and three is to improve the design parameters of aerodynamic characteristics and optimize the aerodynamic efficiency under high-speed conditions.
[0010] Therefore, how to realize the more excellent flight performance of the boat-shaped seaplane is a problem to be solved. SUMMARY
[0011] In order to solve the above problems, the application provides a float device based on the lower surface of the wing of a boat-shaped seaplane to solve the problem that the float device of the boat-shaped seaplane in the prior art has a greater negative impact on the cruising performance.
[0012] The technical scheme of the application is: a float device based on the lower surface of the wing of a boat-shaped seaplane, comprising a float and a connecting device;
[0013] The float is close to the wing tip area of the wing, and the connecting device is connected between the float and the wing tip area of the wing;
[0014] The connecting device comprises a support connected to the float, and the float device is connected to the support;
[0015] The float device has a take-off and landing mode and an air flight mode;
[0016] When the float device is in the take-off and landing mode, the connecting device drives the float to flip to the lower side of the wing through the support; when the float device is in the air flight mode, the connecting device drives the float to flip to the same height as the wing through the support.
[0017] Preferably, the connecting device further comprises a first hinge, a second hinge, a third hinge, a fourth hinge and a sliding block;
[0018] The four groups of supports are arranged on the upper two sides of the float, the first hinge, the second hinge, the third hinge and the fourth hinge are each arranged in two groups and connected to the two ends of the four groups of supports, and the sliding block is arranged in two groups and arranged inside the wing, and the two groups of supports near the middle of the wing are respectively hinged with the two groups of sliding blocks; wherein the first hinge is arranged at the upper end of the outer two groups of supports, the second hinge is arranged at the lower end of the outer two groups of supports, the third hinge is arranged at the upper end of the inner two groups of supports, and the fourth hinge is arranged at the lower end of the inner two groups of supports;
[0019] The sliding block can slide in the wing.
[0020] Preferably, a guide rail is arranged inside the wing, and the sliding block is in sliding cooperation with the guide rail.
[0021] Preferably, the first hinge, the second hinge and the connected bracket form a first plane; the third hinge, the fourth hinge and the connected bracket form a second plane.
[0022] Preferably, when the float device is in the take-off and landing mode, the first plane and the second plane form a triangle with the plane of the wing.
[0023] Preferably, when the float device is in the air flight mode, the first plane and the second plane are approximately parallel to the plane of the wing.
[0024] Preferably, the lower surface of the wing is provided with a groove, and when the float device is in the air flight mode, it is accommodated in the groove.
[0025] Preferably, the third hinge and the fourth hinge in the first plane are provided with a first rotating shaft, and the float rotates around the first rotating shaft when it is turned over.
[0026] Preferably, the wing is provided with a power member, which can drive the sliding block to slide along the sliding rail.
[0027] Preferably, the end portion of the float at both ends adopts a conical frustum structure.
[0028] The hull-type seaplane of the present application has the following advantages based on the float device of the lower surface of the wing:
[0029] Firstly, the float and the connecting device are connected into a whole, and the aerodynamic resistance is obviously reduced; secondly, the connecting device is accommodated in the wing, reducing the disturbance of the float device to the flow field near the wing during flight; finally, the float and the wing tip are integrated into a new wing tip design, reducing the induced drag and improving the aerodynamic efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0030] Figure 1 It is an effect picture of the float device of the hull-type seaplane of the present application in the take-off and landing mode;
[0031] Figure 2 It is an effect picture of the float device of the hull-type seaplane of the present application in the air flight mode;
[0032] Figure 3 It is a schematic diagram of No. 1 plane of the connecting device of the present application;
[0033] Figure 4 It is a schematic diagram of No. 2 plane of the connecting device of the present application;
[0034] Figure 5 It is a schematic diagram of the hinge structure of the connecting device in the take-off and landing mode of the present application.
[0035] 1, float; 2, connecting device; 21, support; 22, first hinge; 23, second hinge; 24, third hinge; 25, fourth hinge; 26, sliding block; 3, wing. DETAILED DESCRIPTION
[0036] For the purpose, technical solutions and advantages of the present application, the technical solutions in the embodiments of the present application will be described in more detail below. In the drawings, the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, not all embodiments. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.
[0037] The first aspect of the present application provides a float device based on the lower surface of the wing of a boat-shaped seaplane, such as Figures 1-2 , comprising a float 1 and a connecting device 2;
[0038] The float 1 is close to the wing tip area of the wing 3, and the connecting device 2 is connected between the float 1 and the wing tip area of the wing 3.
[0039] The connecting device 2 includes a support connected to the float 1, and the float 1 device is connected to the support.
[0040] The float 1 device has a take-off and landing form and an air flight form.
[0041] When the float 1 device is in the take-off and landing form, the connecting device 2 drives the float 1 to overturn to the lower side of the wing 3 through the support; when the float 1 device is in the air flight form, the connecting device 2 drives the float 1 to overturn to the same height as the wing 3 through the support.
[0042] When the aircraft takes off in the water, the float 1 device is controlled to be in the take-off and landing state, and the connecting device 2 drives the float 1 to overturn to the lower side of the wing 3 through the support, thereby improving the lift and buoyancy; before the aircraft lands on the water surface, the float 1 device is controlled to be in the air flight form, and the connecting device 2 drives the float 1 to overturn to the same height as the wing 3 through the support, thereby reducing the lift and buoyancy, so as to realize efficient flight and landing of the seaplane.
[0043] Preferably, in combination with Figure 5 The connecting device 2 further comprises a first hinge 22, a second hinge 23, a third hinge 24, a fourth hinge 25 and a sliding block 26.
[0044] The four groups of supports 21 are arranged on both sides of the upper portion of the buoy 1, the first hinge 22, the second hinge 23, the third hinge 24 and the fourth hinge 25 are each arranged in two groups and connected to the two ends of the four groups of supports 21, and the two groups of sliders 26 are arranged in the interior of the wing 3 and hinged to the two groups of supports 21 close to the middle portion of the wing 3.
[0045] The first hinge 22 is arranged at the upper end of the two groups of supports 21 on the outside, the second hinge 23 is arranged at the lower end of the two groups of supports 21 on the outside, the third hinge 24 is arranged at the upper end of the two groups of supports 21 on the inside, and the fourth hinge 25 is arranged at the lower end of the two groups of supports 21 on the inside.
[0046] The slider 26 can slide in the wing 3.
[0047] The two groups of supports 21 are arranged in pairs to form a structure of one side supporting and the other side rotating, the movement of the slider 26 drives the connected supports 21 to overturn, thereby driving the buoy 1 to overturn, and the switching between the two modes of the buoy 1 device is realized.
[0048] Preferably, a guide rail is arranged in the interior of the wing 3, and the slider 26 is in sliding cooperation with the guide rail. The guide rail ensures the movement of the slider 26 along a predetermined track, thereby improving the stability of the mode conversion.
[0049] In combination Figures 3-4 , preferably, the first hinge 22 and the second hinge 23 form a first plane with the connected supports 21, and the third hinge 24 and the fourth hinge 25 form a second plane with the connected supports 21, thereby forming a double-plane hinge layout design.
[0050] Preferably, when the buoy 1 device is in the take-off and landing mode, the first plane and the second plane form a triangle with the plane of the wing 3, and the triangular configuration provides excellent lateral stability when taking off and landing on the water surface.
[0051] Preferably, when the buoy 1 device is in the air flight mode, the first plane and the second plane are close to parallel with the plane of the wing 3, thereby effectively reducing the buoyancy and facilitating landing.
[0052] Preferably, the lower surface of the wing 3 is arranged in a groove, and when the buoy 1 device is in the air flight mode, it is accommodated in the groove. The groove design allows the connection device 2 to be completely accommodated without increasing the additional volume.
[0053] Preferably, the third hinge 24 and the fourth hinge 25 in the first plane are each provided with a first rotating shaft, and the buoy 1 rotates around the first rotating shaft when it is overturned. The first rotating shaft provides an accurate rotating center for the buoy 1 to overturn stably.
[0054] Preferably, a power member is arranged in the wing 3, and the power member can drive the slider 26 to slide along the sliding rail.
[0055] Preferably, the end of the float 1 is in the form of a conical table structure, and the whole is in the form of a cylindrical structure. The aerodynamic and hydrodynamic requirements are considered. The design requirements of the buoyancy and resistance in water are met, and the design requirements of the zero lift and induced drag in the air are met.
[0056] In summary, the application has the following advantages:
[0057] Firstly, the float and the connecting device are connected into a whole, and the aerodynamic resistance is obviously reduced; secondly, the connecting device is accommodated in the wing, and the disturbance of the float device to the flow field near the wing during flight is reduced; finally, the float and the wing tip are fused into a new wing tip design, the induced drag is reduced, and the aerodynamic efficiency is improved.
[0058] The above is only a specific embodiment of the application, but the protection scope of the application is not limited to this. Any changes or replacements within the technical range disclosed by the application can be easily thought by those skilled in the art, and should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.
Claims
1. A hull-type seaplane float arrangement based on the lower surface of the wing, characterized in that, The floating tube (1) and the connecting device (2) are provided. The floating tube (1) is arranged near the wing tip area of the wing (3), and the connecting device (2) is connected between the floating tube (1) and the wing tip area of the wing (3). The connecting device (2) comprises a support connected with the floating tube (1), and the floating tube (1) device is connected with the support. The floating tube (1) device has a take-off and landing form and an air flight form. When the floating tube (1) device is in the take-off and landing form, the connecting device (2) drives the floating tube (1) to overturn to the lower side of the wing (3) through the support; when the floating tube (1) device is in the air flight form, the connecting device (2) drives the floating tube (1) to overturn to the same height as the wing (3) through the support.
2. The hull-type seaplane based on the pontoon device of the lower surface of the wing according to claim 1, characterized in that, The connecting device (2) further comprises a first hinge (22), a second hinge (23), a third hinge (24), a fourth hinge (25) and a sliding block (26). The four supports (21) are arranged on the upper sides of the floating tube (1), the first hinge (22), the second hinge (23), the third hinge (24) and the fourth hinge (25) are connected with the two ends of the four supports (21), and the two sliding blocks (26) are arranged in the inner part of the wing (3). The two supports (21) near the middle part of the wing (3) are respectively hinged with the two sliding blocks (26). The first hinge (22) is arranged at the upper end of the outer two supports (21), the second hinge (23) is arranged at the lower end of the outer two supports (21), the third hinge (24) is arranged at the upper end of the inner two supports (21), and the fourth hinge (25) is arranged at the lower end of the inner two supports (21). The sliding block (26) can slide in the wing (3).
3. The hull-type seaplane based on the pontoon device of the lower surface of the wing according to claim 2, characterized in that, The wing (3) is provided with a guide rail, and the sliding block (26) is in sliding cooperation with the guide rail.
4. The hull-type seaplane based on the pontoon device of the lower surface of the wing according to claim 2, characterized in that, The first hinge (22) and the second hinge (23) form a first plane with the connected support (21), and the third hinge (24) and the fourth hinge (25) form a second plane with the connected support (21).
5. The hull-type seaplane based on the pontoon device of the lower surface of the wing according to claim 4, characterized in that, When the floating tube (1) device is in the take-off and landing form, the first plane and the second plane form a triangle with the plane of the wing (3).
6. The hull-type seaplane based on the pontoon device of the lower surface of the wing according to claim 4, characterized in that, When the floating tube (1) device is in the air flight form, the first plane and the second plane are approximately parallel to the plane of the wing (3).
7. The hull-type seaplane based on the pontoon device of the lower surface of the wing according to claim 6, characterized in that, The lower surface of the wing (3) is provided with a groove, and the floating tube (1) is arranged in the groove when the floating tube (1) device is in the air flight form.
8. The hull-type seaplane based on the pontoon device of the lower surface of the wing according to claim 4, characterized in that, The third hinge (24) and the fourth hinge (25) in the first plane are provided with a first rotating shaft, and the floating tube (1) rotates around the first rotating shaft when overturning.
9. The hull-type seaplane based on the pontoon device of the lower surface of the wing according to claim 3, characterized in that, The wing (3) is provided with a power member, and the power member can drive the sliding block (26) to slide along the sliding rail.
10. The hull-type seaplane based on the pontoon device of the lower surface of the wing according to claim 1, characterized in that, The end portions of the two ends of the floating tube (1) adopt a conical frustum structure.