A flexible wing structure with embedded twistable skeletons and an aerial vehicle

Abstract

The application discloses a flexible wing structure embedded with a twistable framework and an aerial vehicle, and relates to the technical field of aerostructures, and comprises a framework main beam, a plurality of wing ribs, a plurality of connecting support rods and a skin.

Description

Technical Field

[0001] This invention belongs to the field of aircraft technology, and more specifically, relates to a flexible wing structure with an embedded torsion frame and an aircraft. Background Technology

[0002] The wing is one of the most important components of an aircraft, mounted on the fuselage. Its primary function is to generate lift. It also houses weapons bays and fuel tanks, and can retract the landing gear during flight. Additionally, flaps improve takeoff and landing performance, ailerons provide lateral control, and some wings also have slats on the leading edge to further increase lift. The wing's function is to generate lift to support the aircraft in flight. It also plays a role in stability and control. Wing plans come in various shapes, commonly including rectangular wings, trapezoidal wings, swept wings, delta wings, double delta wings, arrow-shaped wings, and leading-edge extensions. Currently, most aircraft, especially large ones, use highly rigid wings as their primary lift component. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a flexible wing structure with an embedded torsion skeleton. This flexible wing structure with an embedded torsion skeleton breaks away from the current single 3D printing technology for flexible wings. It embeds ribs and connecting support rods inside the wing to enhance rigidity, thereby maintaining sufficient rigidity while achieving active deformation control to adapt to wings with larger aspect ratios.

[0004] To achieve the above objectives, the present invention provides a flexible wing structure with an embedded torsionable frame, comprising:

[0005] The main frame beam conforms to the outer contour of the wing.

[0006] Multiple ribs are spaced apart on the main beam of the frame;

[0007] Multiple connecting support rods, with each end of the multiple connecting support rods being slidably connected to two adjacent wing ribs;

[0008] The skin wraps around the outside of the main beam of the skeleton and the wing ribs.

[0009] Optionally, the plurality of ribs include a first rib, a second rib, a third rib, a fourth rib, and a fifth rib connected in sequence at intervals, with the first rib being close to the fuselage.

[0010] Optionally, the plurality of the connecting support rods include:

[0011] A first connecting support rod, the two ends of which are slidably connected to the first wing rib and the second wing rib respectively;

[0012] The second connecting support rod has two ends that are slidably connected to the second wing rib and the third wing rib, respectively.

[0013] The third connecting support rod has two ends that are slidably connected to the third wing rib and the fourth wing rib, respectively.

[0014] The fourth connecting support rod has its two ends slidably connected to the fourth wing rib and the fifth wing rib, respectively.

[0015] Optionally, the sidewall of the rib is provided with a groove, and the end of the connecting support rod is slidably connected in the groove, and the connecting support rod can undergo a 1° torsional deformation in cooperation with the groove.

[0016] Optionally, one end of the first connecting support rod is close to the connection point between the second wing rib and the main frame beam, and the other end of the first connecting support rod is far away from the connection point between the first wing rib and the main frame beam.

[0017] Optionally, one end of the second connecting support rod is close to the connection point between the third wing rib and the main frame beam, and the other end of the second connecting support rod is away from the connection point between the second wing rib and the main frame beam.

[0018] Optionally, one end of the third connecting support rod is close to the connection point between the third wing rib and the main frame beam, and the other end of the third connecting support rod is far away from the connection point between the fourth wing rib and the main frame beam.

[0019] Optionally, one end of the fourth connecting support rod is close to the connection point between the fourth wing rib and the main beam of the skeleton, and the other end of the fourth connecting support rod is far away from the connection point between the fifth wing rib and the main beam of the skeleton.

[0020] Optionally, the skin is a glass fiber reinforced polytetrafluoroethylene skin.

[0021] An aircraft includes the aforementioned flexible wing structure with an embedded torsion frame.

[0022] This invention provides a flexible wing structure with an embedded torsionable skeleton, the advantages of which are:

[0023] 1. This flexible wing structure with an embedded torsion frame breaks away from the current single 3D printing technology for flexible wings. It embeds ribs and connecting support rods inside the wing to enhance rigidity, maintaining sufficient rigidity while achieving active deformation control to adapt to wings with larger aspect ratios.

[0024] 2. The flexible wing structure with an embedded torsion frame uses glass fiber reinforced polytetrafluoroethylene as the wing skin, which reduces the cost of using 3D printing technology.

[0025] 3. Compared with rigid wings, this flexible wing structure with an embedded torsion frame has advantages such as improved air combat maneuverability, reduced cruise drag, reduced airframe size and mass, increased flutter speed, and reduced gust and maneuver load.

[0026] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0027] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0028] Figure 1 A schematic diagram of a flexible wing structure with an embedded torsion frame according to an embodiment of the present invention is shown.

[0029] Figure 2 A schematic diagram of a groove in a flexible wing structure with an embedded torsion frame according to an embodiment of the present invention is shown.

[0030] Figure 3 A schematic diagram of the motion of the connecting support rod of a flexible wing structure with an embedded torsion frame according to an embodiment of the present invention is shown.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Main frame beam; 2. Skin; 3. Connecting support rod; 4. Wing rib. Detailed Implementation

[0033] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0034] Figure 1 A schematic diagram of a flexible wing structure with an embedded torsion frame according to an embodiment of the present invention is shown. Figure 2 A schematic diagram of a groove in a flexible wing structure with an embedded torsion frame according to an embodiment of the present invention is shown. Figure 3A schematic diagram of the motion of the connecting support rod of a flexible wing structure with an embedded torsion frame according to an embodiment of the present invention is shown.

[0035] like Figure 1-3 As shown, a flexible wing structure with an embedded torsion frame includes:

[0036] Main frame beam 1 conforms to the outer contour of the wing.

[0037] Multiple ribs 4 are spaced apart on the main beam 1 of the frame;

[0038] Multiple connecting support rods 3, with their ends slidably connected to two adjacent ribs 4 respectively;

[0039] Skin 2 wraps around the outside of the main beam 1 and rib 4 of the frame.

[0040] Specifically, the wing frame is formed by the main beam 1, multiple wing ribs 4 and multiple connecting support rods 3, which support the skin 2 to form the wing. This allows the wing to deform flexibly. Combined with active control technology, the wing's torsional deformation is controlled, which improves air combat maneuverability, reduces cruise drag, reduces airframe size and mass, increases flutter speed, and mitigates gusts and maneuver loads.

[0041] In this embodiment, the plurality of wing ribs 4 include a first wing rib, a second wing rib, a third wing rib, a fourth wing rib, and a fifth wing rib connected in sequence at intervals, with the first wing rib being close to the fuselage.

[0042] Specifically, the first wing rib is connected to the fuselage, and the connection part is fixed by a traditional lug-type connection.

[0043] In this embodiment, the plurality of connecting support rods 3 include:

[0044] The first connecting support rod has two ends that are slidably connected to the first wing rib and the second wing rib, respectively.

[0045] The second connecting support rod has two ends that are slidably connected to the second wing rib and the third wing rib, respectively.

[0046] The third connecting support rod has its two ends slidably connected to the third wing rib and the fourth wing rib, respectively.

[0047] The fourth connecting support rod has its two ends slidably connected to the fourth wing rib and the fifth wing rib, respectively.

[0048] In this embodiment, the side wall of the rib 4 is provided with a groove, and the end of the connecting support rod 3 is slidably connected in the groove. The connecting support rod 3 can undergo a 1° torsional deformation in cooperation with the groove.

[0049] Specifically, by controlling the deformation angle of the connecting support rod 3 through the electronic servo motor, the twist angle of the entire wing during flight can be changed by ±5°, thereby enabling a small adjustment of the wing's angle of attack to meet flight requirements.

[0050] Furthermore, the two ends of the connecting support rod are spherical, and the groove is an arc shape that matches the spherical shape.

[0051] Furthermore, the wing can deform under the force of external wind or be controlled by an electronically controlled servo motor, which can be installed on the main beam 1 of the frame.

[0052] In this embodiment, one end of the first connecting support rod is close to the connection point between the second wing rib and the main frame beam 1, and the other end of the first connecting support rod is far away from the connection point between the first wing rib and the main frame beam 1.

[0053] In this embodiment, one end of the second connecting support rod is close to the connection point between the third wing rib and the main frame beam 1, and the other end of the second connecting support rod is far away from the connection point between the second wing rib and the main frame beam 1.

[0054] In this embodiment, one end of the third connecting support rod is close to the connection point between the third wing rib and the main frame beam 1, and the other end of the third connecting support rod is far away from the connection point between the fourth wing rib and the main frame beam 1.

[0055] In this embodiment, one end of the fourth connecting support rod is close to the connection point between the fourth wing rib and the main frame beam 1, while the other end of the fourth connecting support rod is far from the connection point between the fifth wing rib and the main frame beam 1. Specifically, the angle of the connecting support rod 3 can be randomly changed, and regardless of whether it is facing forward or backward, the distance between the tail ends of the two wing ribs can be slightly changed by changing the angle of the support rod.

[0056] In this embodiment, the skin 2 is a glass fiber reinforced polytetrafluoroethylene skin.

[0057] Specifically, the skin 2 is made of glass fiber reinforced polytetrafluoroethylene, forming a flexible wing skin 2. While ensuring sufficient strength, it has a certain degree of deformability. The main frame beam 1 is a glass fiber composite material mixed with metal beam. The main frame beam 1 runs through and fixes each wing rib 4, enhancing the rigidity of the entire wing.

[0058] An aircraft includes the aforementioned flexible wing structure with an embedded torsion frame.

[0059] When the flexible wing structure with an embedded torsion frame in this embodiment is used, taking the use of a spacecraft as an example, a torsion structure consisting of four sets of wing ribs 4 and connecting support rods 3 is embedded inside the wing. The main beam 1 of the frame passes through and fixes each wing rib 4. The deformation angle of the connecting support rod is controlled by an electronically controlled servo motor. The mutual coordination can change the angle of attack of the entire wing during flight by ±5°.

[0060] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A flexible wing structure with an embedded torsionable skeleton, characterized in that, include: The main frame beam conforms to the outer contour of the wing. Multiple ribs are spaced apart on the main beam of the frame; Multiple connecting support rods, with each end of the multiple connecting support rods being slidably connected to two adjacent wing ribs; Skin, which wraps around the outside of the main beam of the frame and the wing rib; The sidewall of the rib is provided with a sliding groove, and the end of the connecting support rod is slidably connected in the sliding groove. The connecting support rod can undergo a 1° torsional deformation in cooperation with the sliding groove. The two ends of the connecting support rod are spherical, and the groove is an arc shape that matches the spherical shape.

2. The flexible wing structure with an embedded torsion frame according to claim 1, characterized in that, The plurality of ribs include a first rib, a second rib, a third rib, a fourth rib, and a fifth rib connected in sequence at intervals, with the first rib being close to the fuselage.

3. The flexible wing structure with an embedded torsion frame according to claim 2, characterized in that, The plurality of connecting support rods include: A first connecting support rod, the two ends of which are slidably connected to the first wing rib and the second wing rib respectively; The second connecting support rod has two ends that are slidably connected to the second wing rib and the third wing rib, respectively. The third connecting support rod has two ends that are slidably connected to the third wing rib and the fourth wing rib, respectively. The fourth connecting support rod has its two ends slidably connected to the fourth wing rib and the fifth wing rib, respectively.

4. The flexible wing structure with an embedded torsion frame according to claim 3, characterized in that, One end of the first connecting support rod is close to the connection point between the second wing rib and the main beam of the frame, and the other end of the first connecting support rod is away from the connection point between the first wing rib and the main beam of the frame.

5. The flexible wing structure with an embedded torsion frame according to claim 3, characterized in that, One end of the second connecting support rod is close to the connection point between the third wing rib and the main beam of the frame, and the other end of the second connecting support rod is away from the connection point between the second wing rib and the main beam of the frame.

6. A flexible wing structure with an embedded torsion frame according to claim 3, characterized in that, One end of the third connecting support rod is close to the connection point between the third wing rib and the main beam of the frame, and the other end of the third connecting support rod is far away from the connection point between the fourth wing rib and the main beam of the frame.

7. A flexible wing structure with an embedded torsion frame according to claim 3, characterized in that, One end of the fourth connecting support rod is close to the connection point between the fourth wing rib and the main beam of the skeleton, and the other end of the fourth connecting support rod is far away from the connection point between the fifth wing rib and the main beam of the skeleton.

8. The flexible wing structure with an embedded torsion frame according to claim 1, characterized in that, The skin is a glass fiber reinforced polytetrafluoroethylene skin.

9. An aircraft, characterized in that, Including the flexible wing structure with an embedded torsion frame as described in any one of claims 1-8.

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