Novel airplane winglet

Abstract

The invention relates to a novel wingtip winglet of an aircraft. The installation angle of the winglet is a forward swept wing, and the winglet is a dihedral winglet. Compared with other winglets, the novel winglet has more excellent aerodynamic characteristics, the vortex phenomenon of the wingtip of a large wing of an aircraft can be reduced, the resistance of the aircraft is reduced, and the lift force of the aircraft is increased.

Description

Technical Field

[0001] This invention patent designs an aircraft winglet, which is mainly used on various types of aircraft. It is installed at the wingtip of the aircraft wing and can change the aerodynamic characteristics at the wingtip, thereby reducing wingtip vortices, reducing aircraft drag, and increasing aircraft lift. Background Technology

[0002] During flight, the airflow from the high-pressure area on the lower surface of the wing flows around the low-pressure area on the upper surface, forming wingtip vortices. This phenomenon reduces the wing's lift, increases drag, and affects flight efficiency and safety. To mitigate this, various types of winglets are used on different models of civil aircraft.

[0003] Currently, the main types of winglets used on aircraft include: 1. Compound swept-back vortex diffusers (e.g., A320 aircraft), 2. Blended wingtips (e.g., B737NG aircraft), 3. Single-segment wingtips (e.g., A330, A340 aircraft), 4. Slanted wingtips (e.g., B787, B777 aircraft), and 5. Double-forked winglets (e.g., B737MAX aircraft). These winglet designs are all aimed at increasing aircraft lift and reducing drag, thus ensuring aircraft safety and fuel economy. This invention is no exception, also considering aircraft safety and fuel economy. While the above-mentioned winglet designs all feature swept wings and dihedral angles, the design concept of this invention differs. This invention adopts a forward-swept wing and dihedral angle design at the wingtip, resulting in better aerodynamic characteristics. Summary of the Invention

[0004] This invention patent designs an aircraft winglet. The winglet is installed at the wingtip of the main wing, similar to other aircraft. Ordinary commercial aircraft winglets are swept-back and dihedral. Unlike ordinary aircraft winglets with swept-back wings and dihedral angles, the winglet of this invention is designed with forward-swept wings and dihedral angles (viewed outward from the mounting line). The wingtip has a downward curve, which alters the aerodynamic characteristics of the wingtip and increases the aircraft's lift.

[0005] During flight, the swept-back wing and dihedral structure of the main wing cause a portion of the airflow on the lower surface of the wing to flow outwards and upwards around the wingtip. This outward flow is the main cause of wingtip vortices. The forward-swept winglet and dihedral design of this invention allow a portion of the airflow at the wingtip to flow inwards. The combined velocity of this inward and outward flow results in a rearward flow, reducing the outward flow of air on the lower surface of the wing and thus reducing the formation of wingtip vortices.

[0006] The winglet designed in this invention is curved downwards and has a distinct arc. This design changes the direction of airflow at the wingtip, causing the outward-flowing airflow at the wingtip to flow downwards. This change in airflow direction gives the wingtip an upward force, which becomes part of the lift of the aircraft's main wing, thereby optimizing the aerodynamic characteristics of the wingtip and increasing the aircraft's lift.

[0007] The winglets designed in this invention are bent downwards outside the mounting line. This design changes the airflow direction at the wingtip on the lower surface of the aircraft wing, preventing the airflow from flowing from the lower surface to the upper surface, thereby preventing the formation of wingtip vortices.

[0008] The winglet designed in this invention has an arc-shaped outer edge, and the overall shape of the winglet is similar to half a heart. The arc-shaped structure helps to reduce air resistance. The junction between the winglet and the wing is curved, which allows airflow to flow better on the wing surface, thereby reducing drag.

[0009] Compared with other aircraft winglets, the winglet designed in this invention patent increases the lift of the aircraft while reducing drag, thereby achieving the goal of optimizing the aircraft's flight efficiency.

[0010] The attached diagram in the instruction manual Figure 1 This is the main view of the schematic diagram. Figure 2 This is a top view of a simplified schematic diagram. The labels on the attached diagram indicate the following: Figure 1 and Figure 2 The number 1 in the middle refers to the mounting line between the winglet and the aircraft.

[0011] Figure 2 The number 2 in the middle refers to the large wing of the aircraft.

[0012] Figure 1 and Figure 2 The number 3 in the middle refers to the winglets.

[0013] Figure 2 "4" refers to the front of the aircraft.

[0014] Figure 1 The number 5 in the middle refers to the large wing of the aircraft.

[0015] Figure 1 and Figure 2 The number 6 in the middle refers to the outer edge line of the winglet.

Claims

1. An aircraft winglet, characterized in that, The winglet is a dihedral winglet, the winglet has a downward curvature, the outer shape of the winglet is an arc, the winglet is a forward-swept winglet, and the winglet's mounting angle is a forward-swept mounting angle.

2. The winglet as described in claim 1, characterized in that, The winglet's mounting position where it meets the wing has a curved transition.

3. The winglet as described in claim 1, characterized in that, The outer side of the winglet is curved, and when viewed from above, the overall structure of the winglet resembles half a heart shape.

4. The winglet as described in claim 1, characterized in that, The winglet has a downward curvature at the installation position, and the winglet is a dihedral winglet.

5. The winglet as described in claim 1, characterized in that, The winglet is a forward-swept winglet.

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