KR20190038694A - Offsetting torque single rotor helicopter by discharging air - Google Patents

Abstract

The present invention relates to a single rotor helicopter, which has: a rotating fan formed on a lower portion of a main rotor; and a plurality of air nozzles controlling flow of air so that an anti-torque technology offsetting torque generated by rotation of the main rotor is applied thereto. According to the present invention, a single rotor helicopter discharging air to offset torque, which is a helicopter having a single main rotor, includes: a rotating fan provided on a lower portion of the main rotor and forming flow of air to a side portion while rotating; a housing having a hollow in which the rotating fan is inserted and in which a plurality of through-holes are formed on a side surface; and a plurality of air nozzles radially provided about the rotating fan and respectively communicating with the plurality of through-holes.

Description

 BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a single rotor helicopter,

The present invention relates to a single rotor helicopter including a single main rotor by eliminating a tail rotor, and more particularly, to a single rotor helicopter including a rotating fan disposed below a main rotor and controlling a flow of air formed by rotation of the rotating fan To a single rotor helicopter to which an anti-torque technique for canceling a torque generated by rotation of a main rotor is applied.

Generally, a helicopter is equipped with two rotors of different size and function. Among them, the rotor, which is large in size and mounted on the body portion of the airframe, is referred to as a main rotor, and the rotor which is small in size and mounted on the tail portion of the airframe is referred to as a tail rotor .

The main rotor is installed horizontally with the ground and rotates by a shaft, thereby generating a thrust force for moving the gas and a lift force for raising the gas. However, there is a problem of generating a torque for rotating the gas by continuous rotation in one direction, The vertically mounted and rotating shaft rotors solve this problem by forming anti-torque to offset the torque generated by rotation of the main rotor.

However, such a tail rotor has a problem of complicating the structure of the gas, poses a risk that it may cause personal injury due to its location and structure, and in case of failure or damage during flight, There have been developed various techniques for developing a helicopter capable of stably flying without a tail rotor, and related inventions are disclosed in Korean Patent Publication No. 1993-0007758 entitled " Dual Inversion A tilt rotor-wing aircraft "of Korean Patent Registration No. 10-0822366, a" multi-rotor flight vehicle "of Korean Patent Laid-Open Publication No. 10-2015-0073617, and a multi-rotor flight vehicle of Korean Patent Application No. 10-2017-0058523 Copter "has been proposed and published.

Korean Patent Laid-Open Publication No. 1993-0007758 entitled " Double Inversion Helicopter ", the output of an engine installed on a body of a helicopter is transmitted to a bevel gear through a clutch, a double rotary shaft is rotated counterclockwise by a bevel gear, It is possible to cancel the torque and to rotate in any direction by adjusting the pitch angle of the upper and lower main parts. Accordingly, it is possible to reduce the power driving the tail rotor, In the "tilt rotor-wing aircraft" of Korean Patent Registration No. 10-0822366, a nacelle with a rotor is tilted and a tilting rotor A fixed-wick mode or phase that generates thrust in the forward direction on the body This invention relates to a rotary-wing aircraft can fly mode that generates thrust in the direction perpendicular to the fuselage has been proposed.

In addition, the "multi-rotor flight vehicle" of Korean Patent Laid-Open Publication No. 10-2015-0073617 includes a plurality of rotor units each having a propeller, a power unit for driving the propeller, a connecting member interconnecting the plurality of rotor units, And a steering unit mounted on the body and having an actuator for moving the connecting member to tilt the plurality of rotor units at the same angle with respect to the body at the same time, An invention relating to a flying body capable of keeping the body horizontal even when the direction is changed has been proposed, and Korean Patent Laid-Open Publication No. 10-2017-0058523 discloses a multi-copter in which a pair of long and horizontally elongated frames And a pair of second boom bars connected to the respective boom bars, This invention relates to a non-resistant compact attitude and down-wind propeller aircraft is configured to include a plurality of propeller for generating power have been proposed.

However, in the case of a multi-rotor type air vehicle in which the number of main rotors increases in place of the tail rotor, there arises a problem that the size of the airframe increases. In place of the tail rotor, In the case of a double-inverted rotor type aircraft, there is a problem that the height of the airframe is increased. In the case of a tilting rotor type flying body, the manufacturing cost is excessively increased, and compared with the helicopter in which the tail rotor- The problem of lowering occurs.

Therefore, the merit of a general helicopter in which a tail rotor is mounted can be maintained, but a helicopter capable of eliminating the disadvantages of the tail rotor by eliminating the tail rotor is required.

Korean Patent Publication No. 1993-0007758 (1993. 05. 20) Korean Registered Patent No. 10-0822366 (2008. 04. 08) Korean Patent Publication No. 10-2015-0073617 (2015. 07.01) Korean Patent Laid-Open Publication No. 10-2017-0058523 (May 27, 2017)

The single rotor helicopter, which discharges air to cancel the torque according to the present invention, is a technology proposed to solve the problems of the related art as described above,

In order to stabilize the gas by canceling the torque generated by the rotation of the main rotor, a tail rotor must be provided. However, unlike the main rotor, which is positioned above the gas and is low in risk of human injury, There is a risk that the rotor may cause personal injury due to its location and structure,

If the tail rotor is damaged during the flight, there is a problem that the possibility of the gas falling due to the stability deteriorates,

A multi-rotor, a double-reversing rotor, and a tilting rotor in which a tail rotor is not mounted are subject to new problems according to their respective structures. Therefore, the object of the present invention is to provide a solution to this problem.

In order to achieve the above-described object, a single-rotor helicopter for discharging air according to the present invention for canceling torque,

In a helicopter having a single main rotor,

A rotary fan provided below the main rotor and rotating axially and forming a flow of air sideways; A housing in which a hollow is formed in which the rotary fan is inserted, and a plurality of through holes are formed in a side surface; A plurality of air nozzles radially arranged around the rotary fan and communicating with the plurality of through holes; The present invention provides a single rotor helicopter that discharges air to cancel a torque.

The single rotor helicopter, which discharges air to cancel the torque according to the present invention,

It is possible to replace the tail rotor mounted on the tail portion of the general helicopter airframe with a rotary fan that forms a flow of air sideways below the main rotor and a plurality of air nozzles that discharge air in a downward oblique direction, And it is possible to prevent human accidents due to the structure,

Since the position and structure stability of the main rotor are increased, the possibility of damages is reduced, and the fall of the gas is prevented.

Since the turret has a simple structure including a small rotary fan and an air nozzle below the main rotor, the merit of a general helicopter in which the tail rotor is mounted can be maintained. However, by eliminating the tail rotor, the disadvantages of the tail rotor can be solved Effect occurred.

1 is a plan view of a single-rotor helicopter for discharging air according to the present invention to cancel torque.
FIG. 2 is a perspective view illustrating a rotating fan according to an embodiment of a single rotor helicopter that discharges air to cancel a torque according to the present invention. FIG.
3 (a) to 3 (c) are views showing a state in which anti-torque is formed by a rotating fan, an air nozzle, and a housing of a single rotor helicopter that discharges air to cancel the torque according to the present invention.
FIG. 4 is a view showing an example in which anti-torque is formed by a rotating fan, an air nozzle and a housing when the rotation direction of the main rotor of the single rotor helicopter for canceling torque by discharging air according to the present invention is formed in the opposite direction .

The present invention relates to a single rotor helicopter including only a single main rotor 100 excluding a tail rotor,

In a helicopter having a single main rotor 100,

A rotating fan 110 provided below the main rotor 100 and rotating axially and forming a flow of air sideways; A housing 120 in which a hollow is formed in which the rotary fan 110 is inserted, and a plurality of through holes 121 are formed in a side surface; A plurality of air nozzles (130) radially arranged around the rotary fan (110) and communicating with the plurality of through holes (121); The present invention relates to a single rotor helicopter that discharges air to cancel a torque.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, a single rotor helicopter discharging air according to the present invention to cancel torque is related to a helicopter having a single main rotor 100.

The single rotor helicopter is a flying body that rises by the lift generated by the rotation of the main rotor 100 and moves by adjusting the angle of the main rotor 100. In view of eliminating the tail boom and the tail rotor, Which is different from a helicopter and differs from a general type of drone in which a plurality of rotors are provided in that only a single main rotor 100 is provided.

The tail rotor of the general type helicopter is a component for maintaining the stability of the helicopter main body by canceling the torque generated by the main rotor. The plurality of rotors provided in the general type of drone are a pair The single rotor helicopter is characterized in that the torque generated by the relative rotor is canceled to maintain the stability of the drone main body. Therefore, the single rotor helicopter having a tail rotor and a single main rotor 100, A method for canceling the torque due to the rotation of the engine 100 and maintaining flight stability must be provided.

Accordingly, the single rotor helicopter discharging the air according to the present invention to cancel the torque is a method for maintaining the flight stability by canceling the torque due to the rotation of the main rotor 100. As shown in FIG. 1, And a rotating fan 110 provided below the rotating shaft 100 for rotating the shaft and forming a flow of air sideways.

The rotating fan 110 rotates in a direction opposite to the rotating direction of the main rotor 100 rotating in one direction and generates an anti-torque for canceling a torque generated due to rotation of the main rotor 100 A main rotor 100 which is fastened to an outer shaft among outer shafts rotating in one direction and an outer shaft which rotates in the other direction and is fastened to an inner shaft, The main rotor 100 is rotated at a speed faster than that of the main rotor 100. [

FIG. 2 is a perspective view showing a state of the rotary fan 110 according to an embodiment of the present invention. It is not limited to this example, and various types of fans, turbo pump blades, And a pump with a reserve tank structure.

Considering the flow of the airflow discharged from the through hole 121 in order to cancel the torque caused by the rotation of the main rotor 100, air is sucked in the vertical direction to form a flow of air laterally in the range of 360 degrees A fan or a turbo pump blade type is effective, but any type of air compression pump can be used if the structure of the reserve tank for temporarily storing air is used.

The rotation direction of each of the inner shaft and the outer shaft may be any one of a forward direction that is clockwise or a reverse direction that is counterclockwise as long as the rotation directions of the inner shaft and the outer shaft are not the same, A single power source may be used as the power for rotating the inner shaft and the outer shaft. However, depending on the internal structure of the single rotor helicopter, separate power sources may be used And a method of rotating the outer shaft with an electric power generated by interlocking the generator with a power source for rotating the inner shaft is also applicable.

The main rotor 100 is a component for generating lift and thrust for flying the single rotor helicopter. Therefore, the main rotor 100 should be positioned above the single rotor helicopter and be exposed to the outside, And is configured to be positioned above the single rotor helicopter and below the main rotor 100 so as to continuously form an air flow, but is preferably formed as a buried or closed type.

Accordingly, as shown in FIG. 1, a single rotor helicopter for discharging air by discharging air according to the present invention has a hollow in which the rotating fan 110 is inserted, and a plurality of through holes 121 are formed in a side surface And a housing 120 which is formed of a metal plate.

The housing 120 is a component that controls the discharge of the airflow formed by the rotation of the rotary fan 110 into the hollow of the rotary fan 110, The rotating fan 110 may be partially opened so that external air necessary for forming the airflow may be introduced into the inside of the rotating fan 110, desirable.

The plurality of through holes 121 may be formed as a discharge port through which the airflow formed by the rotation of the rotary fan 110 is discharged to the outside and horizontally formed on the side surface of the housing 120, And a curved line may be formed in the passage for communicating the inlet and the outlet to which the air is introduced and discharged.

In addition, the housing 120 may be positioned below the main rotor 100 and may be fixed, but may be rotated in a clockwise or counterclockwise direction, 121 to adjust the direction of the airflow discharged to the outside.

1, a single-rotor helicopter for discharging air according to the present invention to cancel torque is radially disposed around the rotary fan 110, and the plurality of holes 121 and And a plurality of air nozzles (130) communicating with each other.

The air nozzle 130 is a passage for discharging the airflow formed by the rotation of the rotary fan 110 to the outside and increasing the speed of the discharged airflow and controlling the direction of the airflow to rotate the main rotor 100 And a plurality of objects having the same shape are arranged at equal intervals and angles with each other so that the discharge amount, the discharge speed and the discharge direction of the airflow are uniformly formed.

Therefore, the air nozzle 130 is formed with an inlet through which the airflow formed by the rotation of the rotary fan 110 enters, an inner passage through which the airflow flows, and an outlet through which the airflow is discharged. At least one outlet may be formed, the inner passage may be formed in a curved shape, and the diameter of each of the at least one outlet is preferably smaller than the diameter of the inlet.

In an embodiment of the present invention, the air nozzle 130 may include a coanda air nozzle that draws air around the coaxial air nozzle 130 using a small amount of compressed air, And may be configured to include various forms.

At this time, the air flow passing through the air nozzle 130 and discharged to the outside through the through hole 121 causes the anti-torque canceling the torque in the certain direction, which is formed by the rotation of the main rotor 100, Each of the plurality of air nozzles 130 may be inclined in a downward slope direction and inclined at an angle of 5 to 45 degrees toward a direction opposite to the rotational direction of the main rotor 100, Adjustable to allow adjustment of the pre-flight angle or continuously change the angle in the range of 5 to 45 ° during flight.

Therefore, by changing the angle of the air nozzle 130, the single rotor helicopter can form the same anti-torque as the torque to stabilize the gas or maintain a certain amount of torque, thereby rotating the gas in one direction or changing the anti- So that the gas can be rotated in the other direction.

In addition, the anti-torque formed by the air flow passing through the air nozzle 130 and discharged to the outside through the through hole 121 must cancel the torque formed by the rotation of the main rotor 100, The anti-torque should have the same physical quantity. As one of the measures for forming the same anti-torque as the torque, the air nozzles 130 should be composed of two or more members having the same interval with each other, preferably eight Or more.

Therefore, it is preferable that the number of the through holes 121 communicating with the air nozzle 130 is the same as the number of the air nozzles 130, and the number of the air holes 130 passing through the inside of the air nozzle 130, It is obvious that the shape and size should be configured so as not to affect the direction.

The airflow generated by the rotary fan 110 and discharged to the outside of the housing 120 through the air nozzle 130 and the through hole 121 is discharged from the main rotor 100 The flow of downward air generated by the rotation of the main rotor 100 collides with the downward direction of the main rotor 100 and the downward inclination direction of the through hole 121, So that a flow of airflow is formed which forms a sufficient amount of anti-torque to cancel the torque generated by the rotation of the main rotor 200.

That is, only the air stream discharged to the outside of the housing 120 does not sufficiently cancel the torque formed by the rotation of the main rotor 200, but by using the downward wind generated by the rotation of the main rotor 100, The magnitude of the airflow increases, and an anti-torque that cancels the torque is formed.

In addition, the plurality of air nozzles 130 are not limited to being circularly arranged about the rotary fan 110, but may be arranged in an elliptical shape. In a case where the air nozzles 130 are arranged in an elliptical shape, I can not.

3 (a) to 3 (c) are views showing examples in which anti-torque is formed. As shown in Figs. 3 (a) to 3 (c) The air flow generated by the air nozzle 130 is blown to the outside of the housing 120 through the air nozzle 130 and the through hole 121. The angle of the air nozzle 130 changes to control the direction of the airflow discharged And the other airflow formed below the main rotor 100 by the discharged airflow has a smaller but faster velocity than the downward airflow generated by the rotation of the main rotor 100, And an anti-torque C for canceling the torque B generated by the rotation of the main rotor 100 is formed.

4, when the rotation direction of the main rotor 100 is formed in a direction opposite to the direction shown in Figs. 3 (a) to 3 (c), the main rotor 100 Since the direction of the torque B generated by the rotation and the direction of the anti-torque C canceling the torque B are also reversed, it is preferable that the air nozzle 130 is formed in a direction opposite to the angle of the air nozzle 130 shown in FIG.

The embodiments described above are provided by way of example for the purpose of enabling a person skilled in the art to sufficiently transfer the technical idea of the present invention to a person skilled in the art, But may be embodied in other forms without limitation.

In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and in the drawings, the width, length, thickness, etc. of the components may be exaggerated or reduced for convenience.

Further, like reference numerals designate like elements throughout the specification.

100: main rotor
110: Rotating fan
120: Housing
121: Through hole
130: Air nozzle
A: Rotation direction of main rotor
B: Torque direction formed by rotation of the main rotor
C: Anti-torque direction

Claims (3)

In a helicopter having a single main rotor 100,
A rotating fan 110 provided below the main rotor 100 and rotating axially and forming a flow of air sideways;
A housing 120 in which a hollow is formed in which the rotary fan 110 is inserted, and a plurality of through holes 121 are formed in a side surface;
A plurality of air nozzles (130) radially arranged around the rotary fan (110) and communicating with the plurality of through holes (121); And the torque is canceled by discharging the air.
The method according to claim 1,
The plurality of through holes (121)
Wherein the first helicopter is formed in a downward slanting direction, and the torque is canceled by discharging the air.
The method according to claim 1,
The plurality of air nozzles (130)
Wherein the angle adjusting means is configured to be able to adjust the angle of the helicopter.

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