JPH0653399U - Paraglider - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] A paraglider that rectifies the turbulence created by the wing itself, assists in the tension of the wing body, has excellent lift without changing the shape of the wing, and is also maneuverable. provide. [Structure] By forming a separate air chamber 14 separate from the first air chamber that forms the airfoil of a paraglider while maintaining the conventional ram pressure and ejects the pressure from the ejection holes, the turbulence and wing generated by the wing body are generated. The separation of the air flow on the upper surface is reduced, the hanging rope 9 is reinforced with an inflation pressure bag 24, the air chamber is made into a wing shape, and it is attached to the side surface of the wing body to generate a lateral lift and increase the wing tension. A paraglider that has multiple air chambers and has the purpose of steering separately in the auxiliary air chamber.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement in a paraglider capable of gliding flight by taking in outside air, expanding it into a wing shape by ram pressure, and generating lift.

[0002]

[Prior art]

 The airfoil is made of non-breathable fabric, and a large number of air chambers with openings in the front are defined in parallel.The outside air is taken into each air chamber and expanded to the airfoil by the ram pressure. Paragliders that are capable of gliding by generating lift due to airflow are in practical use. This paraglider is capable of maneuvering as long as it maintains the airspeed by utilizing the updraft, which is a natural power source, and its main body is an air-impermeable wing body that is flexible and folded. It is considered to be the simplest flying structure that is small in size and convenient to carry. Conventionally, in the gliding flight by a paraglider, the resistance generated by the wing itself due to the flight and the turbulence due to the resistance hinders the flight performance.In order to reduce this resistance and the turbulence caused by the resistance, the airfoil has been improved. I came. In addition, since the paraglider operates by pulling in the trailing edge of the wing, the angle of attack of the wing relative to the relative wind changes, so the air flowing over the upper surface of the wing tends to separate and fall into a stall condition. In addition, the wing body must spread laterally because the operator hangs with a rope below the wing body, but the spread is due to the balance of the lift created by the forward movement of the wing itself and the gravity pulling down. Because of this, the force of pulling downward is not the same as the width of the wing, but there is a drawback that it becomes a force that narrows the spreading force of the wing because it hangs at a point. Furthermore, since the slings are flexible, they can withstand the pulling action, but have physical properties that cannot withstand compression, so there was no force to hold the wings from below. In addition, since the trailing edge of the wing is bent by pulling it in with the steering rope attached to the trailing edge, the trailing edge of the wing is drawn from the ideal curve of the shape of the wing. There was a risk that the air flow would become large and the air flow on the upper surface would separate, resulting in a very dangerous stall.

[0003]

[Problems to be solved by the device]

 As mentioned above, since the wing body is made of flexible cloth and flexible hangers, it is difficult to form and maintain the ideal wing shape, and if the flexible wing collapses the expansion and carrying of the wing body. The improvement of the airfoil creates more resistance and causes turbulence, and the improvement of the airfoil limits the flexibility of thinning the blade and increasing the aspect ratio to reduce the resistance. Yes, if it passes, it will easily collapse and become a dangerous wing. If the angle of attack rises and the air flow on the upper surface of the wing separates, the paraglider will stall and become dangerous. In order to reduce the air resistance that this wing body advances, it is important that the wing body spread as tightly as possible, but since the operator hangs at a point below the wing body, widen the wing body. Contrary to the force, there is a force that acts as a force to contract the wing body, and since the suspension line is flexible, an error may occur between the wing body movement and the pilot movement.

[0004]

[Means for Solving the Problems]

 The gist of the present invention for achieving the above-mentioned object is that the wing body is made of an impermeable fabric, and a large number of air chambers having openings in the front surface are defined in parallel, and outside air is provided in each air chamber. In a paraglider that expands into a wing shape due to the intake ram pressure and glides, the air similarly taken in from another front opening is made thinner toward the rear of the air chamber to increase the pressure, and then resistance and turbulence And a paraglider equipped with a wing-shaped second air chamber in the lateral direction in order to utilize the principle of the wing in the lateral direction on the side surface of the wing. To prevent separation of the air flow that separates from the upper surface of the blade tip, there is a jet part that disturbs the flow at low speed when the angle of attack rises with the flow of air jetting from the blade tip or the appropriate place to prevent separation. Paraglider characterized by having a control valve A path lug rider to stabilize by to have a waist at is pneumatically slings.

[Action]

 According to the present invention configured as described above, the airfoil of the second air chamber having an opening independent from the first air chamber which is taken into each air chamber of the wing body through the opening and expands the lift force in the lateral direction. It is to generate and spread the wing body laterally and blow it out from the injection part of another second air chamber. The accelerated air flow rectifies or disturbs the turbulence created by the wing body.

[0005]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In Fig. 1, the figure shows the entire paraglider (1), the main structure of which consists of a wing body (3) and a plurality of suspension ropes (9) attached to this wing body (3). 3) is made of a soft and impermeable fabric, and has ribs (7) between the upper surface (5) and the lower surface (6) of the airfoil, and has many openings (11) on the front surface. The first air chamber (13) is defined in parallel, and the outside air is taken in through the opening (11) and expanded to the airfoil of the aircraft by the ram pressure. A passenger (2) attaches a harness (4) to the hanging rope (9) and hangs down, and operates a paraglider (1) by operating a control rope (10). The basic configuration of the paraglider (1) described above is well known.

[0006] Fig. 2 is a cross-sectional view of a conventional paraglider wing body (3), which shows turbulence of the air flow caused by the forward movement of the wing body (3), and the relative wind coming from the front has a stagnation point ( 22) The pressure is increased most, and the point is separated from that point and changes to the direction around the wing body (3). Lift force is generated by the difference in the flow velocity between the upper surface and the lower surface of the wing body (3), but at the same time an obstacle is generated. A turbulent air flow is always generated behind a certain wing body (3), a resistance force is generated in direct proportion to the lift force, and a pulling force is generated behind. This invention has been made to reduce the resistance due to this turbulence.

FIG. 3 is a perspective view of the wing body. In order to reduce the occurrence of airflow separation on the wing upper surface of the wing body (3), in addition to the air taken in from the first air chamber opening (11), Air blown out from the opening (16) of the pipe type second air chamber (18) attached to the rib (7) separately from the first air chamber opening (11), exposed on the blade upper surface (5) It is shown that turbulence is rectified and flow separation is prevented by guiding and injecting to the part (15). A second air chamber (14) is provided between the stabilizer (8) and the lower surface (6) of the wing, which has a triangular shape and a jetting portion (15) at a portion that becomes narrower toward the rear, and this second air chamber opening ( By injecting the air taken in from 16) to the turbulent airflow generation point on the trailing edge of the blade, the turbulent airflow generated behind the blade body (3) is rectified. FIG. 4 is a front view of the pipe type second air chamber (18) attached to the rib (7). By attaching to the rib (7), the characteristic flexibility of the conventional paraglider can be maintained and the integrity can be obtained, and the expansion pressure of the first air chamber (13) that holds the formation of the wing body (1) is not affected. You can do it, and you can guide it to the place you want. FIG. 5 is a cross-sectional view in which the pipe type second air chamber (18) is attached to the rib (7). By attaching it to the rib (7), it is possible to guide air in any direction, and it is possible to disperse the ejection part (15) to desired places. FIG. 6 is a perspective view of the wing body (3) seen from the rear side, in which the second air chamber (14) having a jet portion is formed at the leading edge portion of the wing body and the jet portion (15) can be seen in the upper part. It is the figure which attached the pipe type 2nd air chamber (18). FIG. 7 is a cross-sectional view of FIG. 6 and shows a state in which the second air chamber having the ejection portion is not formed in the normal flight attitude. In the normal flight attitude, the second air chamber cloth (21) is pushed by the relative wind and sticks to the wing body (3) according to the shape of the wing body (3). At that time, the opening of the pipe type second air chamber Since (16) is closed, air is not ejected from the ejection part (15) of the pipe-type second air chamber. In this case, a breathable material (17) is used at the portion covered by the opening (11) so as not to hinder the inflow of air into the opening (11) of the first air chamber. FIG. 8 is a sectional view of the same and shows a state where the angle of attack is increased. The stagnation point (22) is lowered due to the elevation of the attack angle, and thus the second air chamber forming cloth (21) of the second air chamber (14) having the ejection portion attached to the leading edge of the wing body The second air chamber forming cloth (21), which is repelled by the wind, is attached to the side surface of the second air chamber forming cloth (21), and the second air chamber (14) having the ejection portion is automatically formed by preventing the repulsion of the second air chamber to a certain extent or more. To do. FIG. 9 is an enlarged cross-sectional view of this portion, and shows the air flow with arrows. When the second air chamber (14) having the jet portion is formed, it is formed at the base of the blade leading edge. When the second air chamber (14) having a blow-out portion is formed at the same time that air is blown out from the blow-out portion (15) and disturbs the air flow on the upper surface (5) of the blade, the pipe that opens into the second air chamber (14) is formed. The air is pushed from the opening (16) of the second mold air chamber (18) and is blown out from the ejection portion (15) of the second pipe air chamber (18), and the air on the trailing edge of the upper surface (5) of the blade is blown. The flow of can be rectified.

FIG. 10 shows that the airfoil second air chamber (23) is attached to the airfoil (3) so that lift is generated in the lateral direction, and the airfoil second air chamber (23) is provided between the stabilizer (8) and the lower surface (6) of the airfoil behind the airfoil. It is a front view of the 2nd air chamber (14) which has a spray part which has a spray part (15). FIG. 11 is the same as FIG. 10, but is a front view of a vent hole (20) for introducing air into the lateral airfoil second chamber (23). This vent hole (20) is provided with a check valve so that the airfoil second air chamber (23) can maintain an independent pressure. In Fig. 12, the lift force generated by the paraglider is expressed by the arrow, and the lift force generated in the upward direction of the wing body is generated by the gravity of the downward pulling force. At the same time, however, this mechanic is inevitable in the conventional paraglider. It was a paraglider that was easily crushed because the wing body that had to be spread laterally was blocked because the force that pulls the wing downward also contracted the wing from the side of the wing to the inside. FIG. 13 shows that the lift shown in FIG. 2 is generated in the lateral direction by installing the airfoil second air chamber (23) so that the lift is generated in the lateral direction on the side surface of the wing body. On the contrary, the force that contracts the wing inward becomes the force that spreads the wing body (3) outward, increasing the tension on the upper and lower surfaces of the wing body (3), making the flow through it smooth and making the lift force stable. It is possible to increase the tensile strength of the wing body (3) while increasing the stability. FIG. 14 is a perspective view in which the airfoil second air chamber (23) is attached to the side surface of the wing body, and the arrows indicate the flow of air. When the airfoil second air chamber (23) is set to 1 m ² and the relative wind is 35 Km / h, an outward pulling force of about 12 Kgf is generated. However, the airfoil must be formed at an angle that is perpendicular to the lateral direction of the airfoil. FIG. 15 is a view of FIG. 14 seen from below, in which the arrows indicate the flow of air, and because the airfoil second air chamber (23) forms a blade cross section with respect to the flow of air, A thick arrow indicates that a lateral force is generated in the lateral direction. This airfoil second air chamber (23) is formed by taking in air from the second air chamber opening (16) on the front surface, as shown in the front view of FIG. 10 and the dotted line as shown in FIG. There is a method in which air is taken in through the vent hole (20) from the first air chamber (13) indicated by the flow of air and an independent air chamber is formed by a check valve. FIG. 16 is a side view of FIG. 14, and the arrows show the flow of air. Normal wing lift can be obtained by this air flow. Thick arrows indicate the generation of lift. It can be understood that a lift is generated in the lateral direction if this airfoil is attached to the side surface of the airfoil so as to generate it in the lateral direction. An airfoil second air chamber is attached to the side surface (12) of the airfoil.

In FIG. 17, a tubular third air chamber (24) is provided so as to surround the suspension rope (9), and compressed air is sent from the second air chamber (14) attached to the lower surface of the blade to expand the air. It is the whole perspective view which showed the state. Since the conventional suspension cord (9) is made of a flexible material, it can withstand the stretching force but cannot withstand the compression force. It is useful for tensioning the wing body (3) in order to hold it repulsively against the compressive force applied to the suspension rope (9) when the body (3) is crushed. FIG. 18 is an enlarged view of this portion. When the wing body (3) advances, the relative wind enters from the first air chamber opening (11) to form a wing shape, and at the same time, the second air chamber forms at the attachment position of the suspension rope (9) on the lower surface (6) of the wing. Air is similarly taken in through the opening (16) of (14) and the second air chamber (14) is expanded. This expanded air is attached to the tube-shaped third air chamber (24), which is attached by winding the suspension rope (9) from the jetting portion (15) of the second air chamber (14), to the tube-type third air chamber air intake ( The third tube-type air chamber (24), which is attached so as to be wound around the suspension rope (9) and is expanded through 25), automatically forms the waist of the suspension rope and withstands the compressive force. is there. FIG. 19 is a cross-sectional view in which the tube-shaped third air chamber (24) is attached to the hanging rope (9) attached to the lower surface (6) of the wing by the hanging rope hanger (19). 20 is hollow, and the suspension rope (9) is surrounded as shown in FIG. 20, so that the air intake port (25) of the third air chamber is a tube-shaped third air chamber (24) in which air enters. The expansion of the third air chamber causes the air in the third air chamber (24) to be prevented from flowing back due to being sandwiched between the hanging rope (5) as shown in FIG. Since the pressure is maintained and the tension is maintained, the suspension measures can be made lean, and the stability of the wing can be increased by increasing the force that opposes the compressive force applied to the suspension rope (9).

FIG. 22 shows a state in which the rear edge portion of the wing of the conventional paraglider is bent and steered. Conventionally, paragliders are operated by pulling in the steering rope (10) with the shape of the wing attached to the trailing edge and bending the trailing edge downward to cause relative wind in the bent portion and increase resistance. Therefore, since the airfoil is deformed, the air flow on the upper surface of the airfoil may separate as shown by the arrow and stall may occur. In FIG. 23, instead of bending the trailing edge of the wing body, the shape of the wing body is changed by drawing in the control line (10) into the auxiliary air chamber (26) that forms the control surface by introducing outside air. It shows how it can be steered as a bending resistance. FIG. 24 shows a state when the steering rope (10) is not retracted. Since the auxiliary air chamber (26) takes in the air from the opening (16) by advancing the outside air, the internal pressure of the auxiliary air chamber clings to the lower surface of the wing, so there is no resistance when not steering. FIG. 25 is a perspective view of the auxiliary air chamber (26) attached. As shown in FIG. 26, the auxiliary air chamber (26) is provided as an auxiliary air chamber (26) by taking in air from the opening (16). By injecting the air taken into the auxiliary air chamber (26) from the jet part (15) attached to the auxiliary air chamber (26) at the same time as steering, the turbulent airflow generated in the steering plate can be diffused and rectified even a little.

[0011]

[Effect of device]

 Below, the effect of the present invention is to form the independent second air chamber without affecting the first air chamber, which is the basis of the formation of the wing body, and the lateral force which is insufficient with only the first air chamber. The wing is tensioned by making the suspension rope have a waist, and the wing body is tensioned so that the wing can be stably formed by maneuvering without deforming the wing, and at the same time the air resistance inevitably generated by the forward movement of the wing. This is a device for reducing the effect of the wing and automatically preventing stall caused by changes in the attack angle of the wing.

[0012]

[Brief description of drawings]

1] is a perspective view of the paraglider in use,

FIG. 2 is a cross-sectional view of the airfoil, in which the flow of air flowing through the airfoil is indicated by arrows.

FIG. 3 is a perspective view in which a stabilizer and a second air chamber having a jet portion attached to the lower surface of the blade and a pipe-type second air chamber having a jet portion attached to a rib in the first air chamber are attached. Is.

FIG. 4 is a front view in which a pipe-type second air chamber is attached to a rib.

FIG. 5 is a cross-sectional view in which a pipe-type second air chamber is attached to a rib.

FIG. 6 is a perspective view in which a second air chamber having a jet portion is attached to the front edge portion of the wing body to form the second air chamber.

FIG. 7 is a view when a second air chamber having a jet portion is attached to the front edge portion of the wing body and the second air chamber is not formed.

FIG. 8 is a cross-sectional view in which a second air chamber having a jet portion is attached to the front edge portion of the wing body to form the second air chamber.

FIG. 9 is an enlarged cross-sectional view of a portion where a second air chamber having a jet portion is attached to the front edge portion of the wing body and the second air chamber is formed.

FIG. 10 is a front view in which the wing-shaped second air chamber is attached to the side surface of the wing body where the second air chamber is attached between the lower surface of the wing and the stabilizer, and the air in the wing-shaped second air chamber is taken in from the front.

[Fig. 11] is a front view in which a wing-shaped second air chamber is attached to the side surface of the wing body in which a second air chamber is attached between the lower surface of the wing and the stabilizer. The method of taking in from the 2nd air chamber.

FIG. 12 is a front view showing the directions of lift force and gravity force in a conventional Baraglider.

FIG. 13 is a front view showing the directions of lift and gravity in a paraglider when a lateral airfoil second air chamber is provided on the side surface of the wing body.

FIG. 14 is a perspective view of the paraglider when a lateral airfoil second air chamber is provided on the side surface of the airfoil, and the air flow is indicated by arrows in the perspective view.

FIG. 15 is a view of the paraglider when the lateral airfoil second air chamber is provided on the side surface of the wing body as seen from below, and the air flow is indicated by arrows. This shows that the airfoil shown in FIG. 2 is formed laterally. In the method of FIG. 10, air is taken in from the second air chamber opening at the tip, but in the method of taking air from the adjacent air chamber in FIG. 11, the flow of air is shown by the dotted arrows. Thick arrows indicate the direction of lift generation.

FIG. 16 is a side view of a paraglider in which a lateral airfoil second air chamber is provided on a side surface of a wing body, and an air flow is indicated by an arrow in a side view.

FIG. 17 is an overall perspective view showing a state in which a tube-type third air chamber is attached to a suspension device.

FIG. 18 is a partial perspective view in which a second air chamber is formed on the lower surface of the wing, and a tube-type third air chamber is formed in the suspension.

FIG. 19 is a cross-sectional view in which a second air chamber is formed on the lower surface of the wing and a tube-type third air chamber is formed as a suspension measure.

FIG. 20 is a tube-type third air chamber wrapped around a suspension device and an air intake port.

FIG. 21 shows a state in which the air intake port between the third air chamber and the suspending device is blocked by the expansion of the third air chamber.

FIG. 22 is a cross-sectional view of a blade in conventional steering.

FIG. 23 is a cross-sectional view of a wing with a steering plate attached to the auxiliary air chamber during steering.

FIG. 24 is a wing cross-sectional view of a wing to which a steering plate for an auxiliary air chamber is attached when the wing is not steered.

FIG. 25 is a perspective view in which a steering plate for an auxiliary air chamber is attached.

FIG. 26 is an enlarged view of a portion of the auxiliary air chamber where the steering plate is attached.

[0013]

[Explanation of symbols]

 1 Paraglider as a whole 2 Passenger 3 Wing body 4 Harness 5 Upper surface of wing body 6 Lower surface of wing body 7 Rib 8 Stabilizer 9 Suspension rope 10 Control rope 11 First air chamber opening 12 Wing body side surface 13 First air chamber 14 Second air chamber 15 Ejection part 16 Opening part 17 Breathable material 18 Pipe type second air chamber 19 Hanging hanger 20 Vent hole 21 Second air chamber forming cloth 22 Stagnation point 23 Airfoil second air chamber 24 Tube type third air chamber 25 Tube type third air chamber Air intake port 26 Auxiliary air chamber

Claims (6)

[Scope of utility model registration request] 1. A wing body is made of an impermeable fabric, and defines a number of air chambers having openings at the front side in parallel. The outside air is taken into the first air chamber and expanded into a wing shape by the ram pressure to glide. In the paraglider, a second air chamber having an ejection portion independent of the first air chamber is provided at an appropriate position on the wing surface, and an injection unit for injecting outside air and ejecting the air taken in from the second air chamber is provided at an appropriate position. Paraglider characterized by that. 2. The wing body is made of an impermeable fabric, and defines a number of air chambers having openings at the front side in a parallel manner. The outside air is taken into the first air chamber and expanded into a wing shape by the ram pressure to glide. In the paraglider, a second air chamber having a jet portion is separately provided between the stabilizer and the blade body, and a jet portion for jetting air taken in from the second air chamber is provided at a proper position and laterally on a side portion of the blade body. Paraglider characterized by attaching a third air chamber formed in a wing shape. 3. The wing body is made of an impermeable fabric, and defines a number of air chambers having openings at the front side in parallel. The outside air is taken into the first air chamber and expanded into a wing shape by the ram pressure to glide. In the paraglider, the second air chamber is automatically formed at the front edge of the wing body with a change in angle of attack, and an injection unit for ejecting the air taken in from the second air chamber to the upper surface of the wing is provided at an appropriate position. Paraglider. 4. The wing body is made of an impermeable fabric, and defines a plurality of air chambers having openings at the front side in parallel. The outside air is taken into the first air chamber and expanded into a wing shape by ram pressure to glide. Paraglider characterized in that the pipe-type second air chamber is attached to a rib inside the first air chamber to take in the outside air and expand the expanded air toward the trailing edge to provide an injection portion at a proper position. . 5. The wing body is made of an impermeable fabric, and defines a number of air chambers having openings at the front side in a parallel manner. The outside air is taken into the first air chamber and expanded into a wing shape by the ram pressure to glide. In the paraglider to be provided, an auxiliary air chamber that introduces outside air into the lower surface of the rear portion of the wing body to form a control surface is provided, the front portion of the auxiliary air chamber is attached to the wing body, and the rear portion is movably formed. A paraglider characterized in that a jet portion for jetting air in the auxiliary blade is provided at a proper position at a rear portion of an upper surface of the auxiliary air chamber. 6. A paraglider, characterized in that a tubular third hollow air chamber is attached to the outer periphery of the suspension line at the injection portion of the second air chamber of claim 1.