JP3118316U - paper airplane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper airplane capable of easily and smoothly flying even by a beginner by attaching an airflow control plate made of an elastic-plastic member to a main wing, a rear part of a fuselage, a horizontal tail, a vertical tail, etc. .
In a paper airplane comprising a fuselage 1 to which a weight is attached at the tip, a main wing 2 is provided on the fuselage 1, and a horizontal tail 4 and a vertical tail 6 are provided at the rear of the fuselage 1. The airflow control plate 5 made of an elastic-plastic member that changes the direction of the airflow by automatically changing the amount of bending deformation according to the flight speed on each of the elevators 4a of the left and right horizontal tails 4 provided on the fuselage 1. Wear.
[Selection] Figure 1

Description

  The present invention creates a three-dimensional model paper airplane (hereinafter referred to as a paper airplane) using cutting paper, etc., and then releases it into the air using the elastic force of hand throwing or rubber thread. The present invention relates to a paper airplane that can realize a stable flight.

  Among paper airplanes that are released into the air using the elastic force of hand throwing or rubber thread, there are those whose manufacturing methods are disclosed in patent gazettes. Moreover, various examples are described in detail in the commercially available book as a general paper airplane manufacturing method. In such a commercially available book, the flight principle, design, and manufacturing method of the paper airplane are explained in detail, and the adjustment method of each member for correctly flying the completed paper airplane is also explained in detail ( For example, refer to Patent Document 1 and Non-Patent Document 1.)

  Of these adjustments to make the paper airplane fly smoothly, when changing the stability of the paper airplane's longitudinal swing, for example, when the paper airplane rises, the rear end of the horizontal tail is toward the wing tip. A bendable elevator is bent upward. On the other hand, the elevator may be bent downward when the paper airplane is lowered.

  In addition, in order to change the stability of the horizontal swing of this paper airplane, when trying to rotate this paper airplane to the right or left side, it can be bent toward the wing tip at the rear end of the left and right main wings. Bend the auxiliary wing provided up and down. More specifically, when the paper airplane is to be rotated in the right direction, the auxiliary wing of the right main wing may be bent upward and the auxiliary wing of the left main wing may be bent downward. On the other hand, in order to rotate the paper airplane in the left direction, the auxiliary wing of the right main wing may be bent downward and the auxiliary wing of the left main wing may be bent upward.

  In order to change the deflection stability of the paper airplane in the deflection direction, when the paper airplane is to be turned to the right, the rudder is provided at the rear end of the vertical tail so as to bend toward the wing tip. Can be bent to the right. On the other hand, when the paper airplane is to be turned leftward, the rudder may be folded leftward.

  The paper airplane as described above can be adjusted to make a smooth and stable flight by adjusting the folding angle of the auxiliary wings of each main wing, the elevator of the horizontal tail and the rudder of the vertical tail as described above. .

  When the paper airplane adjusted by the conventional method as described above is thrown strong by hand throwing or using the elastic force of rubber thread, it is shown in FIG. 7 of the normal flight state explanatory diagram of the paper airplane. As shown, in many cases, without reaching a sufficient altitude, a large arc is drawn immediately after the start and a loop flight is made to land in a short time. By the way, as a desirable flight path for enjoying the elegant flight appearance of a paper airplane, as shown in FIG. 8 of the desirable flight state explanatory diagram of the paper airplane, after taking off, take the highest altitude as possible first, and then level It is to make a slow turn while continuing the flight close to, and to descend while taking the air time. The flight of the paper plane in the above flight path corresponds to the vertical, lateral, and deflection directions of the paper plane, weight, flight speed, and momentum around the aircraft axis. The amount of bending of the auxiliary wings provided on each wing was finely adjusted over time.

In particular, in order to make a three-dimensional shape of a paper airplane used as a practical aircraft, for example, a scale aircraft similar to a high-speed jet aircraft, and to make it fly smoothly and elegantly, the model is actually in shape Since the dimensional ratio derived from the shape of the airframe is a known amount, the machine manufacturing accuracy and surface finishing accuracy of the airframe dimensions are poor, and the position of the center of gravity is also different. It is necessary to make adjustments individually, and such adjustment work has become more difficult.
JP-A-11-179065 Launched Kadokawa Shoten Co., Ltd. “Let's fly a paper airplane” (Akira Iino)

The problem the device is trying to solve

  As shown above, the shape of the recent paper airplane and the desired flight shape are as follows. It is made to move down to lowering while turning. In order to obtain such a flight state, as described above, the bending angle of the auxiliary wing, elevator, and rudder provided on the wings of each part was finely adjusted, but it was a very delicate work, Because it requires experience, intuition and time, it was extremely difficult for beginners.

  Therefore, the object of the present invention is to install an air flow control plate that is made of an elastic-plastic member on the main wing, the rear part of the fuselage, the horizontal tail, the vertical tail, etc., and whose bending deformation automatically changes according to the air flow velocity. It is to provide a paper airplane that enables even a beginner to easily and smoothly fly.

Means for solving the problem

  The present invention has been made in view of the above circumstances. Therefore, in order to solve the above problems, a paper airplane according to claim 1 of the present invention is configured as described later. In other words, the paper airplane according to claim 1 of the present invention includes a fuselage to which a weight is attached at the tip, and the fuselage is provided with a main wing whose cross-sectional shape is formed in an arc shape or a wing shape, and the rear part of the fuselage In a paper airplane in which a horizontal tail and a vertical tail are provided on either of the rear end of the fuselage and the horizontal tail, the amount of bending deformation automatically changes according to the flight speed, and the air An airflow control plate made of an elastic-plastic member that changes the flow direction is mounted.

  A paper airplane according to claim 2 of the present invention is the paper airplane according to claim 1, wherein the amount of bending deformation automatically changes in accordance with the flight speed at the rear edge of the tip of the main wing. An airflow control plate made of an elastic-plastic member that changes the flow direction is mounted.

  A paper airplane according to claim 3 of the present invention is the paper airplane according to any one of claim 1 or 2, wherein the rear edge of the vertical tail is bent and deformed according to the flight speed. An airflow control plate made of an elastic-plastic member that automatically changes the amount and changes the direction of the airflow is mounted.

Effect of device

  According to the paper airplane according to claims 1 to 3 of the present invention, the amount of bending deformation is automatically applied to the rear end of the fuselage of the paper airplane, the auxiliary wing provided on each wing, the elevator and the rudder according to the flight speed. An airflow control plate that changes the direction of the airflow by changing the airflow is attached. Therefore, when the paper airplane is strongly thrown by hand or started by the elastic force of the rubber thread, the amount of bending deformation of the airflow control plate automatically changes according to the flight speed of the paper airplane. Accordingly, the direction of the air flow behind the paper airplane is automatically fine-tuned in accordance with the flight speed of the paper airplane, so that it is provided on each wing as in the conventional paper airplane. There is no need to finely adjust the bending angle of the auxiliary wing, and it is possible to obtain an excellent effect that the paper airplane can be adjusted relatively easily so that it can fly along the desired flight path.

  In the paper airplane according to claim 1 of the present invention, the amount of bending deformation is automatically changed in accordance with the flight speed at one of the rear end of the fuselage of the paper airplane and the horizontal tail. An airflow control plate that changes direction is installed. For this reason, when the paper airplane is started almost vertically upward by strong hand throwing or elastic force of rubber thread, the amount of bending deformation of the airflow control plate automatically changes according to the flight speed of the paper airplane. Therefore, since the amount of bending deformation becomes large and the mounting angle becomes small at high speed, the vertical swing moment of the paper airplane becomes small, and the paper airplane can rise at a steep angle as it is and can reach a high altitude. When the flight speed of the paper airplane decreases, the air resistance decreases, and the airflow control plate returns to the initial state due to the elastic force, so the paper airplane moves to a smooth horizontal flight with the set vertical swing moment. And descend at a slow flight speed.

  In the paper airplane according to claim 2 of the present invention, an airflow control plate that changes the direction of the airflow by automatically changing the bending deformation amount according to the flight speed is provided at the trailing edge of the leading end of the main wing of the paper airplane. It is installed. For this reason, the amount of bending deformation of the airflow control plate is increased and the mounting angle is reduced during high-speed flight immediately after being strongly thrown by hand or by the elastic force of a rubber thread. Accordingly, since the lateral swing moment of the paper airplane is reduced, the rotation of the paper airplane is suppressed, and when the flight speed decreases, the air resistance decreases, so the amount of bending deformation of the airflow control plate gradually decreases due to the elastic force. In order to return to the initial mounting angle, the paper airplane changes to a smooth turning flight with a set lateral swing moment and descends at a slow flight speed.

  In the paper airplane according to claim 3 of the present invention, an airflow control plate is mounted on the trailing edge of the vertical tail of the paper airplane to change the direction of airflow by automatically changing the amount of bending deformation according to the flight speed. Has been. Therefore, at the time of high-speed flight immediately after being strongly thrown by hand or started by the elastic force of rubber thread, the amount of bending deformation of the airflow control plate increases and the mounting angle decreases. Therefore, the deflection moment in the deflection direction of the paper airplane decreases, and the air resistance decreases as the flight speed decreases, so the amount of bending deformation of the airflow control plate gradually decreases due to the elastic force, and the airflow control plate becomes the initial mounting angle. Therefore, the paper airplane moves to a smooth turning flight with a set deflection direction swing moment, and descends at a slow flight speed.

Hereinafter, paper airplanes according to Embodiments 1 and 2 of the present invention will be sequentially described with reference to the accompanying drawings.
First, a paper airplane according to Embodiment 1 of the present invention will be described with reference to the accompanying drawings. 1 is a perspective view of a paper airplane according to the first embodiment of the present invention, FIG. 2 is an explanatory view of a state of mounting an airflow control plate, FIG. 3 is a cross-sectional view taken along line AA of FIG. It is initial adjustment explanatory drawing.

As shown in FIG. 1, the paper airplane according to the first embodiment of the present invention includes a fuselage 1 to which a weight (not shown) is attached at the tip. Main wings 2, 2 that project in opposite directions and have a cross-sectional shape formed in an arc shape or an airfoil are provided on the left and right sides of the middle of the body 1 in the front-rear direction.
Further, at the rear part of the fuselage 1, horizontal tails 4 and 4 and a vertical tail 6 projecting in opposite left and right directions are provided. The auxiliary wing 2a of the main wing 2 is equipped with an airflow control plate 3 made of an elastic-plastic member, and the elevator 4a of the horizontal tail 4 is fitted with an airflow control plate 5 made of an elastic-plastic member, An airflow control plate 7 made of an elastic-plastic member is attached to the rudder 6 a of the vertical tail 6.

  In the case of the paper airplane according to the first embodiment, the main wing 2, the horizontal tail 4, and the vertical tail 6 are all provided with an airflow control plate made of an elastic-plastic member. However, it is not limited to such a configuration. For example, the airflow control plate may be provided only on the main wing 2 or may be provided only on the horizontal tail 4. Further, when the airflow control plate is provided only on the main wing 2 and only on the horizontal tail 4, the appropriate effect can be obtained even when the airflow control plate is not attached to the vertical tail 6.

  The airflow control plate 3, the airflow control plate 5, and the airflow control plate 7 are all cut into a rectangular shape from an elastic-plastic member made of, for example, a polyester resin having a thickness of 0.05 to 0.3 mm, a hard polyvinyl chloride resin, or the like. The main wings 2, 2, the horizontal tails 4, 4, and the vertical tail 6 are appropriately mounted by an adhesive applied to the glue margin on one side. The airflow control plates 3, 5, and 7 may be colored, but a transparent one is preferable because it looks like a real machine in flight.

  Hereinafter, although the airflow control plate 5 is attached to the horizontal tail 4, the case of a paper airplane in which the airflow control plate is not attached to the main wing 2 or the vertical tail 6, as an example, referring to FIGS. Details of the configuration of the airflow control plate and the adjustment method thereof will be described. That is, the air flow control plate 5 has an elasticity enough to bend and deform at a wind speed of 2 to 5 m, and is glue to be adhered to the rear edge (d) of the tip of the elevator 4 a of the horizontal tail 4. It consists of a substitute surface (I), a valley fold line (B), and a surface (C) that controls the air flow.

  Further, the angle between the horizontal tail 4 and the surface (c) for controlling the airflow of the airflow control plate 5, that is, the mounting angle α of the airflow control plate 5 has a positive value (α> 0), and airflow control. The surface (c) for controlling the air flow of the plate 5 is set to face upward. Of course, the airflow control plate 3 attached to the main wing 2 also has the same configuration as the airflow control plate 5. In addition, in the case of the airflow control plate 7 attached to the vertical tail 6, it is bent to one of the left and right.

  In the case of the paper airplane according to the prior art, when the elevator of the horizontal tail of the paper airplane is bent and changed, and is started loosely by hand throwing, as shown in the flight path (b) in FIG. It is adjusted so that the paper airplane descends slowly. As described above with reference to FIG. 7, when the paper airplane adjusted in this way is strong by hand-throwing or is started at high speed using the elastic force of rubber thread, the flight speed of the paper airplane is high. In many cases, paper airplanes do not reach a sufficient altitude, and land in a short time by looping in a large arc immediately after starting. More specifically, it is a general flight path to turn over and descend to the ground while drawing a large arc of about 10 meters at the maximum.

  Next, in order to achieve the desired flight path shown in FIG. 8 by adjusting the vertical swing as a representative example, the paper airplane of the present invention is strongly thrown by hand or started at high speed using the elastic force of rubber thread. The adjustment of the airflow control plate 5 of the paper airplane will be described in detail.

  First, the flight path of the paper airplane is adjusted at a slow start speed in the horizontal direction by hand throwing without attaching the airflow control plate 5 to the paper airplane. That is, the position of the center of gravity is set to the nose side of the fuselage 1, and the paper airplane is adjusted to fall slightly from the nose side as shown by the flight path (a) in FIG. Next, the airflow control plate 5 is adhered to (d) at the rear edge of the tip of the paper airplane elevator 4a adjusted to fly along the flight path (a). The mounting angle α of the surface (c) for controlling the airflow of the airflow control plate 5 is set to about 20 degrees. In this case, the length (e) of the airflow control plate 5 is preferably about three times the width (about 2 cm) of the airflow control plate 5.

  Next, as described above, the paper airplane with the airflow control plate 5 attached to the horizontal tail 4 is slowly started in the horizontal direction by hand throwing. Then, the length (e) of the surface (c) for controlling the airflow of the airflow control plate 5 is adjusted by cutting so that the paper airplane flies along the flight path (b) shown in FIG. To do.

  When the paper airplane adjusted in this way is strong by hand throwing or is started almost vertically at high speed using the elastic force of rubber thread, the paper airplane starts to rise at a high flight speed. The plane (c) of the airflow control plate 5 that controls the airflow is deformed by the resistance of the airflow and the mounting angle α is reduced, so that the paper airplane rapidly rises substantially vertically. As the altitude rises, the speed of the paper airplane rises, so the surface (c) that controls the airflow of the airflow control plate 5 springs back in the direction approaching the initial mounting angle α by the elastic force, The paper airplane is slowly lowered by the air flow controlled by the mounting angle α.

  That is, since the descent speed of this paper airplane is the same speed as that at the time of gentle hand throwing, it descends along a flight path similar to the flight path (b) shown in FIG. By the way, in the case of a paper airplane having a total length of 20 cm, the maximum reachable altitude of the paper airplane according to the prior art was about 10 m or less as described above, but the maximum reachable altitude of the paper airplane according to Embodiment 1 of the present invention is 20 m or more. The flight direction was almost vertical.

  Although it has been extremely difficult to finely adjust the main wing, the horizontal tail, etc. so that the paper airplane according to the prior art flies in the desired flight path shown in FIG. 8, the tip of the elevator 4 a of the horizontal tail 4 By adhering the airflow control plate 5 to the rear edge (d), the adjustment work for flying along the desired flight path shown in FIG. 8 becomes very easy, and the flight path adjustment work time of the paper airplane Could be shortened to at least about half or less.

  By the way, for the airflow control plate 3 attached to the auxiliary wing 2a of the main wing 2 and the airflow control plate 7 attached to the rudder 6a of the vertical tail 6, the mounting angle α becomes small when the flight speed of the paper airplane is high. Since the generated moment is small, it is not possible to expect a great effect on each. However, when the flight speed of the paper airplane becomes low, the air flow changes greatly, and a large moment acts on the paper airplane, so that the airflow control plate 3 and the airflow control plate 7 exert a great effect. The actions of the airflow control plate 3 and the airflow control plate 7 are the same as those described with reference to the airflow control plate 5 attached to the horizontal tail 4, so that the actions related to the airflow control plate 3 and the airflow control plate 7 are performed. A detailed description of is omitted.

Next, a paper airplane according to Embodiment 2 of the present invention will be described with reference to FIGS.
FIG. 5 is a perspective view of the rear part of the paper airplane according to the second embodiment of the present invention, showing a state adjusted to fly along the flight path (a) shown in FIG. 4, and FIG. 6 is a flight path shown in FIG. It is shape explanatory drawing of the airflow control board adjusted so that a paper airplane may fly. That is, the paper airplane according to the second embodiment of the present invention includes two vertical tails 6. An airflow control plate 5 ′ for adjusting the vertical swing and the deflection swing of the paper airplane according to the second embodiment is the rear end portion of the fuselage 1 of the paper airplane and the two vertical tails 6. It is installed between.

  That is, as shown in FIG. 6, when the shape of the surface (c) for controlling the airflow of the airflow control plate 5 ′ is deformed in a composite manner so as to obtain the effect of preventing the vertical direction fluctuation and the deflection direction fluctuation, In addition to the action of preventing the original airflow control plate 5 'from shaking in the vertical direction, the composite action has the same action of preventing deflection in the deflection direction as when the airflow control plate 7 for preventing deflection in the deflection direction is attached to the vertical tail blade 6. Obtainable. Therefore, since the right end of the airflow control plate 5 'in this figure is bent upward, it is possible to obtain an excellent effect that it is possible to achieve a combination of the improvement of the rising altitude of the paper airplane and the leftward turning flight. it can. Of course, it is natural that the airflow control plate 5 'can be configured to exhibit only the function of preventing the paper airplane from shaking in the longitudinal direction.

It is a perspective view of a paper airplane concerning form 1 of the present invention. It is a mounting state explanatory drawing of the airflow control board of the paper airplane which concerns on form 1 of this invention. It is the sectional view on the AA line of FIG. It is explanatory drawing of initial adjustment of the flight attitude | position of a paper airplane. FIG. 9 is a perspective view of a rear portion of the paper airplane showing a state adjusted to fly along the flight path (a) shown in FIG. 4 according to the second embodiment of the present invention, and an air current that the paper airplane flies along the flight path shown in FIG. It is shape explanatory drawing of a control board. FIG. 9 is a perspective view of a part of the rear portion of the paper airplane showing a state adjusted to fly along the flight path (a) shown in FIG. It is shape explanatory drawing of the airflow control board adjusted so that it might fly. It is explanatory drawing of the normal flight state of a paper airplane. It is explanatory drawing of the desirable flight state of a paper airplane.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Fuselage 2 ... Main wing, 2a ... Auxiliary wing 3 ... Airflow control board 4 ... Horizontal tail, 4a ... Elevator 5 ... Airflow control board, 5 '... Airflow control board 6 ... Vertical tail, 6a ... Direction rudder 7 ... Airflow control board

Claims (3)

  A paper airplane having a fuselage to which a weight is attached at the tip, a main wing having a cross-sectional shape formed in an arc shape or a wing shape is provided on the fuselage, and a horizontal tail and a vertical tail are provided at the rear of the fuselage The air flow control plate made of an elastic-plastic member that changes the direction of the air flow by automatically changing the amount of bending deformation according to the flight speed on one of the rear end of the fuselage and the horizontal tail A paper airplane characterized by wearing   The air flow control plate made of an elastic-plastic member that changes the direction of air flow by automatically changing the amount of bending deformation according to the flight speed is attached to the rear edge of the tip of the main wing. The paper airplane according to 1.   2. An airflow control plate made of an elastic-plastic member that changes the direction of airflow by automatically changing the amount of bending deformation according to the flight speed is attached to the rear edge of the vertical tail. Or a paper airplane according to any one of the paragraphs 2;

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