KR200434323Y1 - Dragonfly-type ornithopter with two pairs of wing - Google Patents

Abstract

The present invention relates to a dragonfly-type wing vehicle designed to efficiently control lift and thrust generation as well as HOVERING by applying a wing-type wing having two pairs of wings to a wing vehicle. In more detail, the dragonfly-type wing wing according to the present invention is designed to efficiently control flight performance by flying the fly or increasing lift by placing a phase difference between the flap movement of the front wing and the rear wing during flight. A dragonfly-type winged wing vehicle having one or two pairs of wings.

Dragonfly, Flap, Wings, Wings

Description

DRAGONFLY-TYPE ORNITHOPTER WITH TWO PAIRS OF WING}

Figure 1 shows the configuration of a dragonfly type wing aircraft having two pairs of wings according to the present invention.

Figure 2 shows a front view of a dragonfly type wing aircraft having two pairs of wings according to the present invention.

Figure 3 shows a drive mechanism that can adjust the phase difference of the two pairs of wings in the wing aircraft according to the present invention.

Figure 4 shows the lift coefficient and drag coefficient of the model driven by two pairs of wings according to the present invention.

<Explanation of the Codes in Drawings>

1: drive mechanism

2: fuselage

3: front wing

4: rear wing

5: wing structure

6: tail

7: front wing

8: rear wing

9: dragonfly's eye

10: connecting rod connecting part

11: motor shaft

12, 12 ′: Reduction Gear

13, 13 ′: driving disk

14, 14 ′: connecting rod

15, 15 ′: Hole for fixing connecting rod

16, 16 ′: central axis of flapping motion

17, 17 ′: front of the wing

18: lift coefficient

19: thrust factor

   The present invention relates to a dragonfly-type wing vehicle designed to efficiently control lift and thrust generation as well as HOVERING by applying a wing-type wing having two pairs of wings to a wing vehicle. In more detail, the dragonfly-type wing wing according to the present invention allows the flight performance to be controlled by setting the phase difference of the flap movement of the front wing and the rear wing during flight or by adjusting the lift and thrust. The present invention relates to a dragonfly-type wing aircraft having two pairs of wings.

  Recently, PTERYX MODEL AIRCRAFT in the United States has commercialized and sold a flying aircraft (flying flapping wings) controlled by a remote control device (RC), and a flying aircraft with a pair of wings like a bird is generally flapping. (FLAPPING) Increases lift by increasing speed. The wing wing (ORNITHOPTER) is remotely controlled, but operated with a pair of wings, the method of adjusting lift and thrust is different from the case of the dragonfly type wing wing with two pairs of wings.

  As described above, a winged wing vehicle having a pair of wings is commercialized and sold, but a dragonfly-type wing wing having two pairs of wings that can efficiently control lift and thrust generation is not commercialized.

  The present invention is devised to solve the above problems of the prior art, by applying two pairs of wings like a dragonfly wings to produce a beautiful wing movement to fly like a real dragonfly, or front and rear wings of the aircraft A dragonfly-type wing vehicle designed to control lift and thrust performance by adjusting the phase difference.

  In order to apply the phase difference to the wings of the dragonfly-type wing vehicle, it is necessary to control the flight performance by adjusting the phase difference between the front and rear wings of the dragonfly-type wing vehicle. The method of adjusting the phase difference between the front wing and the rear wing of the dragonfly type wing vehicle is to adjust the speed of the motor using two motors, or to connect the connecting rod on the DRIVING DISK using one motor. There is a method of adjusting the position of the front and rear wings by adjusting the position.

  Therefore, the present invention has a technical problem of driving two pairs of wings in order to implement flapping motion in a dragonfly type wing aircraft having two pairs. This technical problem can be solved by investigating the lift and thrust according to the phase difference between the front and rear wing and applying it to the dragonfly type wing vehicle.

  The present invention for realizing the above object relates to a dragonfly type wing aircraft designed to efficiently adjust the lift and thrust through the phase difference of the front and rear wings by mounting two pairs of wings, such as a dragonfly; It is composed of a fuselage portion to which the power transmission mechanism is mounted, a front wing and a rear wing connected to the power transmission mechanism to perform a FLAPPING MOTION, a wing structure supporting the wing, and a tail portion to adjust the direction of flight. It features.

  Hereinafter, with reference to the accompanying drawings will be described in detail the dragonfly type wing aircraft according to the present invention.

  Figure 1 shows the configuration of the dragonfly type wing aircraft having two pairs of wings according to the present invention. Dragonfly type wing vehicle according to the present invention; A power transmission mechanism 1; The body part (2) on which the power transmission mechanism (1) is mounted, connected to the power transmission mechanism to perform a FLAPPING MOTION, and the front wing (3) and rear wing (4) made of a flexible material, and wings It consists of a supporting wing structure (5), the tail portion (6) to help the flight direction and stability during flight. The power transmission mechanism (1) mounted on the fuselage part (2) of the dragonfly type wing vehicle is basically a device for converting circular motion into linear motion, and in particular, the tail part (6) is a flexible material such as a dragonfly (FLEXIBLE MATERIAL) It should be bent slightly according to the direction and speed of flight to maintain flight stability and maneuverability.

Figure 2 shows a front view of a dragonfly type wing aircraft having two pairs of wings according to the present invention. The dragonfly type wing vehicle according to the present invention has a front wing (7) made of a flexible material and a rear wing (8) having a front wing and a phase difference (PHASE DIFFERENCE) to perform flapping motion,
The front part of the fuselage to which the power transmission mechanism is mounted is composed of a front part (9) made of dragonfly eyes for aesthetics, a connecting rod (10) connected to the root (ROOT) side of the wing structure. In this case, the phase (PHASE) means that the movement of one wing of the blade to the phase of 360 °, the two wings move simultaneously as one wing when the phase of the front wing and the rear wing is the same. In addition, when the fore wing and the rear wing has a phase difference, it means that the wings do not move at the same time as one wing, and the wing position angles of the front wing and the rear wing are different. For example, when the phase difference of the front and rear wings is different, for example, the rear wing falls down when the front wing rises, and the actual dragonfly performs the winging by adjusting the phase difference of the front wing and the rear wing. This fore wing is flapping with a phase of 0 ° to 360 ° for one period and the fore wing has a phase of 0 ° to 360 ° and performs flapping for one period. do. The dragonfly-type wing wing according to the present invention performs flapping movement at the front and rear wings simultaneously when the phase difference of the front and rear wings is 0 °, and the front and rear wings are mutually different when the phase difference of the front and rear wings is 180 °. Perform flapping movements crossed in opposite directions.

  Figure 3 shows a drive mechanism capable of driving two pairs of wings of the dragonfly type wing vehicle according to the present invention. The driving mechanism for driving the front wing of the dragonfly type wing aircraft according to the present invention has a reduction gear (REDUCTION GEAR) connected to the motor shaft 11, the driving disk (DRIVING DISK) and the driving disk connected to the reduction gear 12. It is configured to connect the connecting rod (13) connected to the (13) to the root (ROOT) side of the wing structure to change the circular motion of the motor to the flapping motion of the wing (FLAPPING MOTION). The drive mechanism will be described in more detail based on the accompanying drawings, in which the motor shaft 11 is connected to the reduction gear 12 and the drive disc 13, and the connecting rod 14 at various positions of the drive disc DRIVING DISK. ), And one end of the connecting rod is connected to the drive disc 13 connected to the motor shaft 11, and the other end is the root of the wing structure. By connecting to the side 16, a circular motion of a motor (existing on the opposite side of the motor shaft, not shown) is converted into a flapping motion of the wing.

  In addition, the driving mechanism for driving the rear wing 4 of the dragonfly type wing vehicle according to the present invention is very similar to the mechanism for driving the front wing 3 mentioned above. Rear wing 4 according to the present invention has a reduction gear (REDUCTION GEAR) connected to the motor shaft 11, the driving disk (DRIVING DISK) and the driving disk 13 'connected to the reduction gear 12'. Connect the connecting connecting rod 14 'to the ROOT side of the wing structure, and have a shaft hole 15' for fixing the connecting rod 14 'at various positions of the DRIVING DISK. One end of the connecting rod is connected to the drive disc 13 'connected to the motor shaft 11 side, and the other end is connected to the root side 16' of the wing structure to the opposite side of the motor (motor shaft). Present, not shown) is configured to change the flapping motion (FLAPPING MOTION) of the rear wing (4). The driving mechanism of the dragonfly-type wing aircraft according to the present invention can remove a portion to reduce the weight of the reduction gear (12, 12 ') and the drive disk (13, 13'), the drive disk (13, 13 ') It is possible to adjust the phase difference of the front wing and the rear wing by having the shaft holes 15 and 15 'for fixing the connecting rods 14 and 14' at various positions of. The front and rear wings driven in this way are fixed to the front battery zones 17 and 17 'of the wings on the central axes 16 and 16' of the flapping motion to enable flapping motion of the front and rear wings. In addition, holes 15 and 15 'are drilled at various positions of the driving discs 13 and 13' to adjust the flapping angle of the front and rear wings, and the connecting rod 14 and 14 'to adjust the flapping amplitude. ), The position and length of the shaft can be adjusted. The present invention described above is not limited to the above-described embodiments and drawings, of course, various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. For example, two motors are used to drive the front and rear wings, or a plurality of reduction gears are used to greatly reduce the rotational speed of the motor and increase the power of the flapping motion.

  The driving mechanism of the dragonfly type wing vehicle must be considered because friction occurs in the process of changing from the rotational movement to the vertical movement, so it must be considered, in particular, the connecting rod connected to the drive disks 13 and 13 'of the drive mechanism. (14, 14 ') should be bent slightly in order to withstand structural strength and perform smooth functions. In addition, the driving mechanism of the wing wing body having two pairs of wings is disposed on the fuselage part of the wing wing body, and the power transmission mechanism is provided with at least one gear gear or a reduction gear to reduce the speed of the motor to reduce the flapping motion of the wing. Make it possible.

  FIG. 4 is a lift coefficient 18 measured using a load cell by mounting a dragonfly type model driven by two pairs of flapping wings in a subsonic wind tunnel test unit according to an embodiment of the present invention. And the drag coefficient 19. In detail, the presented aerodynamic data show that when the phase difference between the front and rear wing is 180 °, the horizontal axis is dimensionless time (time / time of one cycle), and the vertical axis is the lift coefficient (18) and the thrust coefficient (19). ) Shows aerodynamic data for one cycle obtained through the wind tunnel test (WIND TUNNEL EXPERIMENT). In the phase difference 180 ° of the front and rear blades, as described above, the motion processes of the front and rear blades are opposite to each other. It can be seen that the lift coefficient 18 of this dragonfly-type wing vehicle is almost constant without a significant increase or decrease in one period as shown in FIG. This is because the fore wing performs upstroke (the wing moves upward), the back wing performs downstroke (the wing moves downward), and the fore wing performs the downstroke, the rear wing performs the upstroke. Because. Such a forward and rear wing movement, if one of the front and rear wings generates the lift, the other wing generates air force in the component of the opposite direction of lift lift is almost constant without the lift generated. However, there is a slight increase in lift around 0.5 dimensionless time (t / T = time / period of time), because the rear wing with the larger wing area performs the downstroke motion. As shown in FIG. 4, the thrust coefficient 19 during one cycle is not so large and is generated as a thrust rather than a drag. However, the thrust component of the dragonfly-type wing vehicle does not show a sharp increase or decrease. As such, the amount of increase or decrease of the lift component 18 and the thrust component 19 is not large, and it is expected to perform the HOVERING at a phase difference of 180 °. Known. Therefore, the present invention proved that flight can be controlled by the phase difference of the front and rear wing of the wing aircraft with two pairs of wings by demonstrating that it is possible to fly in place according to the phase difference through wind tunnel experiment.

As described above with reference to the drawings illustrated a dragonfly-type wing aircraft having two pairs of wings according to the present invention, the present invention is not limited by the embodiments and drawings disclosed herein, the technical scope of the present invention Of course, various modifications can be made by those skilled in the art.

Dragonfly type wing aircraft according to the present invention has the advantage that can control the flight performance by the phase difference, unlike the pair of wing wing aircraft because the front and rear wing performs a flapping movement with a phase difference. In addition, the dragonfly-type wing wing according to the present invention can fly with two pairs of wings to produce a beautiful flight scene, the user can enjoy the pleasure of feeling while flying like a real dragonfly. In addition, the dragonfly-type wing wing according to the present invention can adjust the lift and thrust by the phase difference of the front and rear wing as well as the flapping movement speed, you can feel a high degree of difficulty flying.

The dragonfly-type wing wing according to the present invention has different aerodynamic performance than the previous wing wing because it can generate constant lift or additional lift and thrust by driving the front and rear wings, and adjust the phase difference between the front and rear wing. This has the advantage of being able to fly in place. Therefore, the wing aircraft according to the present invention is characterized by the ability to control the flight performance than the wing aircraft having a pair of wings by applying two pairs of wings.

Claims (1)

The power transmission mechanism 1 for transmitting the power generated from the motor has a REDUCTION GEAR connected to the motor shaft 11, and a driving disk DRIVING DISK connected to the reduction gears 12 and 12 ′. Connecting a connecting rod connected to the driving disks 13 and 13 'to the root of the wing structure to change the circular motion of the motor into a flapping motion of the wing; The power transmission mechanism 1 is mounted to the fuselage portion 2 of the wing wing body, and is connected to the power transmission mechanism 1 to perform FLAPPING MOTION, as well as the front wing 3 made of a flexible material, and Dragonfly type wing aircraft, characterized in that the wing wings (4), wing structure for supporting the wing (5) and the tail portion (6) to adjust the flight direction can fly through the wing movement of the front and rear wings .

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