KR20060110241A - Dragonfly-type ornithopter with two pairs of wing - Google Patents

Abstract

A dragonfly type ornithopter with two pairs of wings is provided to allow users to produce the beautiful flapping motion such as a dragonfly flies, and to control the lift and thrust performance by adjusting the phase difference between front and rear wings, so as to achieve the hovering and to improve the control of flight performance. The dragonfly type ornithopter with two pairs of wings comprises: a power transfer mechanism(1), transferring the power, generated from a motor; an ornithopter body(2), in which the power transfer mechanism(1) is mounted; front and rear wings(3,4), made out of a flexible material, and connected to the power transfer mechanism(1) so as to carry out a flapping motion; a wing structure(5), supporting the wings(3,4); and a tail section(6), controlling the flight direction; wherein the power transfer mechanism(1) is configured in such a manner that reduction gears are connected to a motor shaft, that driving disks are connected to the reduction gears respectively, and that connecting rods are connected to the driving disks respectively.

Description

DRAGONFLY-TYPE ORNITHOPTER WITH TWO PAIRS OF WING}

1 is a block diagram 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 vehicle with two pairs of wings in accordance with 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 embodiment of 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 invented to efficiently control lift and thrust generation as well as HOVERING by applying a dragonfly-type wing having two pairs of wings to a wing vehicle. In more detail, the dragonfly-type wing wing according to the present invention can control the flight performance by flying in place or by adjusting the lift and thrust by placing the phase difference (PHASE DIFFERENCE) of the flap movement of the front wing and the rear wing during the flight. It relates to a dragonfly type wing aircraft having two pairs of wings invented.

Recently, PTERYX MODEL AIRCRAFT in the United States has commercialized and sold a flying aircraft (flying flapping wings) controlled by a remote control unit (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 has been made 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 The invention relates to a dragonfly-type wing vehicle that can 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.

Accordingly, 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 invented to be able to efficiently adjust the lift and thrust through the phase difference of the front and rear wings by mounting two pairs of wings like 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.

  1 is a block diagram of a 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 vehicle with two pairs of wings in accordance with the present invention. Dragonfly type wing aircraft 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 the flapping movement, the front part of the fuselage portion is equipped with a power transmission mechanism For the dragonfly is made of a front part of the fuselage (9), made of a connecting rod (10) connected to the root (ROOT) side of the wing structure. 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. In the dragonfly type wing wing according to the present invention, when the phase difference of the front and rear wings is 0 °, both the front and rear wings simultaneously perform flapping motion, and when the phase difference of the front and rear wings is 180 °, the front and rear wings are different from each other. Perform flapping movements crossed in opposite directions.

  Figure 3 illustrates a drive mechanism capable of driving two pairs of wings of a dragonfly type wing vehicle in accordance with 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 drive mechanism for driving the rear wing 4 of the dragonfly type wing vehicle according to the invention is very similar to the mechanism for driving the front wing 3 already mentioned above. Rear wing 4 according to the present invention has a reduction gear (REDUCTION GEAR) connected to the motor shaft 11, the drive disk (DRIVING DISK) and the drive disk 13 'connected to the reduction gear 12'. The connecting connecting rod 14 'is connected to the ROOT side of the wing structure, and there are shaft holes 15' for fixing the connecting rod 14 'at various positions of the driving disc. 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 connect the motor (motor shaft). It is configured to change the circular motion of the other side (present, not shown) into the flapping motion of the rear wing (4). The drive mechanism of the dragonfly type wing aircraft according to the present invention can remove a portion to reduce the weight of the reduction gears 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. As described above, the present invention is not limited to the above-described embodiments and drawings, and various modifications may be made by those skilled in the art within the technical scope 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 taken into consideration, in particular, the connection connected to the drive discs 13 and 13 'of the drive mechanism. The rods 14 and 14 'should be slightly bent to withstand structural strength and perform a smooth function. 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.

  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. The movement of the front and rear wings generates lift by one of the front and rear wings, while the other wing generates air force as a component in the opposite direction of lift so that the lift is almost unchanged. 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 thrust without appearing as 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, in the present invention, it was verified that the flight can be controlled by the phase difference of the front and rear wings of the wing aircraft having two pairs of wings by proving that the in-flight flight can be performed according to the phase difference through the wind tunnel test.

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 scope of the technical spirit of the present invention Of course, various modifications can be made by those skilled in the art.

Dragonfly-type wing wing 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 the flapping movement with the 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 flying vehicle according to the present invention can adjust the lift and thrust by the phase difference of the front and rear wings as well as the flapping movement speed, it can feel a high degree of difficulty flying.

Dragonfly-type wing wing according to the present invention is different from the previous wing wing body and aerodynamic performance, because it can generate a constant lift or additional lift and thrust by driving the front and rear wings, and adjust the phase difference of the front and rear wings 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 a front wing 3 made of a flexible material. And a rear wing (4), a wing structure for supporting the wing (5) and a tail portion (6) to adjust the flight direction, etc. Dragonfly type, characterized in that to adjust the phase difference (PHASE DIFFERENCE) of the front wing and the rear wing Wing aircraft.

Images