A dual mode quadcopter

Abstract

The present application relates to a kind of dual-mode quadcopters, including fuselage, circular arc shell, short wing of circular arc shell, long wing of circular arc shell, short wing of fuselage and long wing of fuselage;For the commonness of traditional four rotors and four propeller fixed wing all have four sets of propeller power system, and the relative position difference of four sets of propeller "X" type arrangement and "one" type parallel, design two groups of mirror image symmetry long half wing and short half wing, adopt single wing rotation switching mode, mainly meet the relative position of four rotors and four propeller fixed wing airfoil and propeller.The application is repeatedly switched between fixed wing and four rotors, compared with the configuration switching mechanism of tilt rotor aircraft, it is more simple and reliable, control is more stable;Compared with composite quadcopter, it does not need to set special lifting power device, and load utilization rate is higher.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, specifically providing a dual-mode quadcopter. Background Technology

[0002] The current mainstream UAVs still use the relatively traditional fixed-wing and multi-rotor lift configurations. Fixed-wing UAVs have higher horizontal speed and lower energy consumption, but they are more difficult to operate, lack hovering ability, and have relatively demanding takeoff and landing conditions. Multi-rotor UAVs can take off and land vertically, hover in place, and are relatively easy to operate, but they are slower horizontally and consume more energy. To integrate the advantages of the two lift configurations and achieve switching between fixed-wing and rotary-wing modes, some mature compatible configurations have been developed, such as the tiltrotor configuration of the Osprey helicopter and the compound quadcopter configuration of the JUMP-20 UAV. The former achieves the switching between vertical takeoff and landing and horizontal flight modes by tilting the propellers and changing the angle between the propeller axis and the horizontal plane. It requires a complex servo system to constantly adjust the propeller axis angle to meet flight requirements, and the configuration is highly coupled with the aircraft control. The latter directly adds a rotor layout for vertical takeoff and landing to the fixed-wing layout without mechanical configuration changes. However, when one mode is activated, the functional structure of the other mode becomes useless dead weight, occupying the payload weight. Summary of the Invention

[0003] The purpose of this invention is to address the need for vertical take-off and landing and horizontal flight switching in small and medium-sized UAVs, as well as the low tolerance for complex structures and unnecessary dead weight. It adopts a single-wing rotating variable configuration design, which splits a pair of conventional fixed wings into two sets of mirror-symmetrical long and short half wings. These can be combined at a 180° angle to form a conventional fixed wing configuration, or one set can be rotated 90° around the back of the fuselage to form a quadcopter configuration at a 90° angle. The invention also includes a matching configuration switching structure and a propeller power unit arrangement variation.

[0004] ① By using a single-wing rotating configuration, the aircraft can be completely switched to a quadcopter or fixed-wing configuration, adopting their respective mature flight control modes, instead of always maintaining a compromise configuration that requires complex mechanics and power servo systems.

[0005] ② Through the single-wing rotational configuration, in both quadcopter and fixed-wing configurations, the four propeller power units can always play a propulsive role, without any periods of inactivity, thus ensuring the effective utilization of the power system load.

[0006] The technical solution of this invention is:

[0007] In view of the commonality of traditional quadcopters and quadcopter fixed wings having four propeller power systems, as well as the difference in the relative positions of the four propellers arranged in an "X" shape and in a "I" shape, two sets of mirror-symmetrical long half-wings and short half-wings were designed. A single-wing rotation switching method was adopted, which mainly satisfies the airfoil and the relative position of the propellers of quadcopters and quadcopter fixed wings.

[0008] A dual-mode quadcopter is provided, comprising a fuselage 1, an arc-shaped shell 2, a short wing of the arc-shaped shell 3, a long wing of the arc-shaped shell 4, a short wing of the fuselage 5, and a long wing of the fuselage 6.

[0009] An arc-shaped groove 103 is formed on the fuselage 1, and the rotation axis of the arc-shaped groove is parallel to the longitudinal axis 110 of the fuselage;

[0010] The arc-shaped shell slides into the arc-shaped groove, and the fuselage has short wings and long wings extending laterally on both sides. The arc-shaped shell has short wings and long wings formed at both ends. The arc-shaped shell has two positions relative to the fuselage, and can switch between these two positions and form two airfoils through sliding. Each of the short and long wings has a propeller, and the central axis of the propeller is parallel to the longitudinal axis of the fuselage. The arc-shaped shell also has a propeller, and the central axis of the propeller is parallel to the longitudinal axis of the fuselage.

[0011] The long wings of the fuselage and the short wings of the arc-shaped shell form one group, and the short wings of the fuselage and the long wings of the arc-shaped shell form another group.

[0012] When the arc-shaped shell is in the first position relative to the fuselage, the arc-shaped shell is embedded in the back of the fuselage, and the arc-shaped shell and the fuselage are combined to form an integral body. The short wing of the arc-shaped shell and the long wing of the fuselage are combined to form the left wing, and the long wing of the arc-shaped shell and the short wing of the fuselage are combined to form the right wing. The four propellers are arranged in a line, and the aircraft presents a four-propeller fixed-wing configuration.

[0013] When the arc-shaped shell is in the second position relative to the fuselage, the arc-shaped shell slides 90 degrees circumferentially relative to the fuselage, such that the long and short wings of the arc-shaped shell are perpendicular to the long and short wings of the fuselage.

[0014] Furthermore, the arc-shaped housing and the body can be locked in both the first and second positions, so that in both the first and second positions, the arc-shaped housing and the body are fixed as one unit.

[0015] Furthermore, the left and right wings of the fuselage are one long and one short, the left and right wings of the arc-shaped shell are one long and one short, the long wing of the fuselage and the short wing of the arc-shaped shell form one group, and the short wing of the fuselage and the long wing of the arc-shaped shell form another group. In the first position, each group is assembled to form the left and right wings.

[0016] Furthermore, the wing surface of the short wing is rectangular, and the wing surface of the long wing is an L-shaped plate. The wing surface of the short wing can be spliced ​​together with the wing surface of the long wing to form a complete rectangle.

[0017] Furthermore, the long-wing propeller 106 is further away from the longitudinal axis of the fuselage than the short-wing propeller 105.

[0018] Furthermore, the tail of the fuselage forms a landing support, which supports the fuselage so that its longitudinal axis is perpendicular to the ground. In the first position, the landing support also serves as a tail fin.

[0019] Furthermore, the landing support includes a bottom ring 8 and a beam frame 9. The bottom ring is fixedly connected to the rear end of the fuselage through the beam frame. The central axis of the bottom ring is parallel to the longitudinal axis of the fuselage. The beam frame forms a longitudinally extending wing surface, which serves as a tail fin.

[0020] Furthermore, rollers or sliders are provided on the front and rear edges 102 of the arc-shaped shell, and the rollers or sliders are limited to slide in the arc-shaped groove.

[0021] Furthermore, the long wings of the arc-shaped shell and fuselage form a protective cover, and the propeller is fixed on the short wings of the arc-shaped shell and fuselage by a forward extension plate 104 at the leading edge of the short wings. In the first position, the protective cover covers the forward extension plate to form protection.

[0022] Furthermore, the arcuate shell has a central opening window through which the fuselage's long wing extends. This opening window allows the arcuate shell to slide between a first position and a second position, creating a sense of avoidance.

[0023] The advantages of this invention are: it autonomously and repeatedly switches between fixed-wing and quadcopter configurations, which is simpler, more reliable, and more stable than the configuration switching mechanism of tiltrotor aircraft; compared with compound quadcopter aircraft, it does not require a dedicated lift and drop power unit and has a higher payload utilization rate. It can better meet the functional requirements of small and medium-sized UAVs for vertical take-off and landing, hovering and staring, and level flight cruise. Attached Figure Description

[0024] Figure 1 A schematic diagram of a quadcopter;

[0025] Figure 2 A schematic diagram of a quadcopter;

[0026] Figure 3a Top view of the four-rotor fixed-wing configuration of the aircraft;

[0027] Figure 3b A bottom view of the four-rotor fixed-wing configuration of the aircraft;

[0028] Figure 3c Isometric schematic diagram of a four-rotor fixed-wing configuration of an aircraft;

[0029] Figure 3d Front view of a four-rotor fixed-wing configuration of an aircraft;

[0030] Figure 4a Top view of the quadcopter configuration of the aircraft;

[0031] Figure 4b A bottom view of the quadcopter configuration of the aircraft;

[0032] Figure 4c Isometric schematic diagram of a quadcopter configuration for an aircraft;

[0033] Figure 4d Front view of the quadcopter configuration of the aircraft;

[0034] Figure 5 A schematic diagram of an aircraft switching from a quadcopter configuration to a quadrotor fixed-wing configuration;

[0035] The components are: 1. Fuselage; 2. Arc-shaped shell; 3. Short wing of the arc-shaped shell; 4. Long wing of the arc-shaped shell; 5. Short wing of the fuselage; 6. Long wing of the fuselage; 7. Protective shield; 8. Bottom ring; 9. Beam frame; 101. Center opening window; 102. Front and rear edges of the arc-shaped shell; 103. Arc-shaped slide; 104. Forward extension plate; 105. Short wing propeller; 106. Long wing propeller; 107. Forward extension plate positioning groove; 108. Upper surface of the leading edge of the short half-wing; 109. Lower surface of the inner trailing edge of the long half-wing; 110. Rotation center shaft. Detailed Implementation

[0036] The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples may be described, and these examples should not be construed as limited to those set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0037] A dual-mode quadcopter is provided, comprising a fuselage 1, an arc-shaped shell 2, a short wing of the arc-shaped shell 3, a long wing of the arc-shaped shell 4, a short wing of the fuselage 5, and a long wing of the fuselage 6.

[0038] An arc-shaped groove 103 is formed on the fuselage 1, and the rotation axis of the arc-shaped groove is parallel to the longitudinal axis 110 of the fuselage;

[0039] The arc-shaped shell slides into the arc-shaped groove, and short wings and long wings of the fuselage extend laterally from both sides of the fuselage. Short wings and long wings of the arc-shaped shell are formed at both ends of the arc-shaped shell. The arc-shaped shell has two positions relative to the fuselage, and can switch between these two positions and form two airfoils through sliding. Each of the short and long wings of the fuselage has a propeller, and the central axis of the propeller is parallel to the longitudinal axis of the fuselage. Each of the short and long wings of the arc-shaped shell has a propeller, and the central axis of the propeller is parallel to the longitudinal axis of the fuselage. Arc-shaped guide rails (rollers or sliders) are provided at the leading and trailing edges of the arc-shaped shell 2.

[0040] When the arc-shaped shell is in the first position relative to the fuselage, the arc-shaped shell is embedded in the back of the fuselage, and the arc-shaped shell and the fuselage are combined to form an integral body. The left wing of the arc-shaped shell is combined with the left wing of the fuselage to form the left wing, and the right wing of the arc-shaped shell is combined with the right wing of the fuselage to form the right wing. The four propellers are arranged in a line, and the aircraft presents a four-propeller fixed-wing configuration.

[0041] When the arc-shaped shell is in the second position relative to the fuselage, the arc-shaped shell slides 90 degrees circumferentially relative to the fuselage, so that the left and right wings of the arc-shaped shell are perpendicular to the left and right wings of the fuselage, and the four propellers are arranged in a rectangular pattern, so that the aircraft presents a quadcopter configuration.

[0042] The arc-shaped housing and the body can be locked in both the first and second positions, so that in the first and second positions, the arc-shaped housing and the body are fixed as one unit.

[0043] The fuselage has one long and one short wing, the arc-shaped shell has one long and one short wing, the long wing of the fuselage and the short wing of the arc-shaped shell form one group, and the short wing of the fuselage and the long wing of the arc-shaped shell form another group. In the first position, each group is assembled to form the left and right wings.

[0044] The wing surface of the short wing is rectangular, and the wing surface of the long wing is an L-shaped plate. The wing surface of the short wing can be spliced ​​together with the wing surface of the long wing to form a complete rectangle.

[0045] The long-wing propeller 106 is further away from the longitudinal axis of the fuselage than the short-wing propeller 105.

[0046] The tail of the fuselage forms a landing support, which supports the fuselage so that its longitudinal axis is perpendicular to the ground. In the first position, the landing support also serves as a tail fin.

[0047] The landing support includes a bottom ring 8 and a beam frame 9. The bottom ring is fixedly connected to the rear end of the fuselage through the beam frame. The central axis of the bottom ring is parallel to the longitudinal axis of the fuselage. The beam frame forms a longitudinally extending wing surface, which serves as a tail fin.

[0048] The arc-shaped shell and the long wings of the fuselage form a protective cover. On the short wings of the arc-shaped shell and the fuselage, the propeller is fixed by a forward extension plate 104 at the leading edge of the short wing. In the first position, the protective cover covers the forward extension plate to form protection.

[0049] The arc-shaped shell has a central opening window, through which the long wing of the fuselage passes.

[0050] Descriptions of various advantageous arrangements have been shown for illustrative and descriptive purposes, but such descriptions are not intended to be exclusive or limited to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. Furthermore, different advantageous examples may describe different advantages compared to other advantageous examples. One or more examples have been selected and described in order to best illustrate the principles and practical application of the examples, and to enable those skilled in the art to understand that this disclosure contains various examples with various modifications suitable for the particular intended use.

Claims

1. A dual-mode quadcopter aircraft, characterized in that: This includes the fuselage, the arc-shaped shell, the short wings of the arc-shaped shell, the long wings of the arc-shaped shell, the short wings of the fuselage, and the long wings of the fuselage. An arc-shaped groove is formed on the fuselage, and the rotation axis of the arc-shaped groove is parallel to the longitudinal axis of the fuselage. The arc-shaped shell slides in conjunction with the arc-shaped groove, and the fuselage has short wings and long wings extending laterally on both sides. The arc-shaped shell has short wings and long wings formed at both ends. The arc-shaped shell has two positions relative to the fuselage, and can switch between the two positions and form two airfoils by sliding; the short wing and the long wing of the fuselage each have a propeller, and the central axis of the propeller is parallel to the longitudinal axis of the fuselage; the short wing and the long wing of the arc-shaped shell each have a propeller, and the central axis of the propeller is parallel to the longitudinal axis of the fuselage; the arc-shaped shell has a central opening window, and the long wing of the fuselage passes through the opening window; The long wings of the fuselage and the short wings of the arc-shaped shell form one group, and the short wings of the fuselage and the long wings of the arc-shaped shell form another group. When the arc-shaped shell is in the first position relative to the fuselage, the arc-shaped shell is embedded in the back of the fuselage, and the arc-shaped shell and the fuselage are combined to form an integral body. The short wing of the arc-shaped shell and the long wing of the fuselage are combined to form the left wing, and the long wing of the arc-shaped shell and the short wing of the fuselage are combined to form the right wing. The four propellers are arranged in a line, and the aircraft presents a four-propeller fixed-wing configuration. When the arc-shaped shell is in the second position relative to the fuselage, the arc-shaped shell slides 90 degrees circumferentially relative to the fuselage, such that the long and short wings of the arc-shaped shell are perpendicular to the long and short wings of the fuselage.

2. The dual-mode quadcopter aircraft according to claim 1, characterized in that: The arc-shaped housing and the body can be locked in both the first and second positions, so that in the first and second positions, the arc-shaped housing and the body are fixed as one unit.

3. A dual-mode quadcopter according to claim 1, characterized in that: The propeller with the long wing is further away from the longitudinal axis of the fuselage than the propeller with the short wing.

4. A dual-mode quadcopter aircraft according to claim 1, characterized in that: The tail of the fuselage forms a landing support, which supports the fuselage so that its longitudinal axis is perpendicular to the ground. In the first position, the landing support also serves as a tail fin.

5. A dual-mode quadcopter according to claim 4, characterized in that: The landing support includes a bottom ring and a beam frame. The bottom ring is fixedly connected to the rear end of the fuselage through the beam frame. The central axis of the bottom ring is parallel to the longitudinal axis of the fuselage. The beam frame forms a longitudinally extending wing surface, which serves as a tail fin.

6. A dual-mode quadcopter according to claim 2, characterized in that: Rollers or sliders are provided on the front and rear edges of the arc-shaped shell, and the rollers or sliders are limited to slide in the arc-shaped groove.

7. A dual-mode quadcopter aircraft according to claim 2, characterized in that: The arc-shaped shell and the long wings of the fuselage form a protective cover. On the short wings of the arc-shaped shell and the fuselage, the propeller is fixed by a forward extension plate at the leading edge of the short wing. In the first position, the protective cover covers the forward extension plate to provide protection.

8. A dual-mode quadcopter according to claim 2, characterized in that: The wing surface of the short wing is rectangular, and the wing surface of the long wing is an L-shaped plate. The wing surface of the short wing can be spliced ​​together with the wing surface of the long wing to form a complete rectangle.

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