CN214075045U

CN214075045U - Paper aircraft circles round

Info

Publication number: CN214075045U
Application number: CN202023335649.9U
Authority: CN
Inventors: 李官翰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-31
Anticipated expiration: 2030-12-31

Abstract

The application discloses a rotary paper aircraft, which comprises an aircraft body and wings, wherein the wings are symmetrically distributed on two sides of the aircraft body and horizontally spread to the whole body, the head part of the aircraft body is provided with a seal head capable of locking the aircraft body, and the wings are in the shapes of special wings with straight front edges and sweepforward rear edges and narrow wings at wing tips; the wingtip of the wing is provided with an upward vertical winglet, and the trailing edge of the wing is provided with an upward bent elevator; the tail part of the machine body is provided with an upward vertical tail wing. The utility model discloses an adjusting paper aircraft's lift center and centrobaric relative position to introduce the resistance of appropriate size, can make paper aircraft throw the rotatory flight of back side direction after flying out, finally can return to thrower on hand. According to the phenomenon, a rotary machine with high rotary success rate is designed through multiple tests according to the aerodynamic principle.

Description

Paper aircraft circles round

Technical Field

The application relates to the technical field of paper airplanes, in particular to a rotary paper airplane.

Background

The paper plane is a toy plane made of paper and is the most common form in aviation paper folding handwork. The paper plane has high playability and strong interest, and is popular with teenagers and children. However, the flying postures of the traditional common paper plane are few, so that the novelty brought to the user is not enough. Therefore, the prior traditional paper plane has less flying postures, low interest and low playability.

The paper plane capable of realizing the convolution of the special-effect flight attitude can bring strong freshness to users, and can greatly stimulate the exploration desire of teenagers and children on aviation knowledge. In addition, the paper plane is easy to fold and adjust, has no great requirement on arm strength, and is suitable for teenagers and children.

SUMMERY OF THE UTILITY MODEL

The main aim at of this application provides a paper aircraft circles round to it is few to solve present traditional paper aircraft flight gesture, and the interest is low, the problem that playability is low.

In order to achieve the above object, the present application provides the following techniques:

a rotary paper aircraft comprises an aircraft body and wings, wherein the wings are symmetrically distributed on two sides of the aircraft body and horizontally spread to the whole body, the head part of the aircraft body is provided with a seal head capable of locking the aircraft body, and the wings are in the shapes of special wings with straight front edges and forward swept back edges and narrow wings at wing tips; the wingtip of the wing is provided with an upward vertical winglet, and the trailing edge of the wing is provided with an upward bent elevator; the tail part of the machine body is provided with an upward vertical tail wing.

Furthermore, the middle section of the wing is provided with a longitudinal crease, and the root of the wing is provided with an up-down angle.

Further, the size of the dihedral angle is 10-30 degrees.

Further, the wings comprise a main wing and an auxiliary wing, the vertical winglets are arranged at the wingtips of the auxiliary wing, and the elevators are arranged at the rear edge of the main wing.

Further, the width of the elevator is less than the width of the trailing edge of the main wing.

Furthermore, an upturning angle of 0-60 degrees is arranged on the elevator.

Further, the trailing edge sweep angle of the main wing is 20-30 °.

Further, the included angle between the auxiliary wing and the horizontal direction is 10-30 degrees.

Further, the wing leading edge is provided with a resistance structure which is dense short creases.

Further, the average wing load of the wing is 0.0160-0.0165g/cm²(ii) a The aspect ratio is 2.15-2.30.

Compared with the prior art, this application can bring following technological effect:

1. the utility model discloses an adjusting paper aircraft's lift center and centrobaric relative position to introduce the resistance of appropriate size, can make paper aircraft throw the rotatory flight of back side direction after flying out, finally can return to thrower on hand. According to the phenomenon, a rotary machine with high rotary success rate is designed through multiple tests according to the aerodynamic principle.

Therefore, the paper airplane which is easy to fold and adjust and has the high-interest rotary flying posture has good application prospect.

2. The utility model can be used as a medium or a teaching aid for teenagers and children to learn aviation knowledge, and can also be used as a daily toy to stimulate the exploration desire of the teenagers and children to the aviation knowledge;

3. the utility model adopts the layout of the hybrid wing with larger aspect ratio, smaller wing load, upper and lower dihedral angles and the flying wing type pneumatic layout, thereby improving the maneuverability of the paper airplane and leading the paper airplane to have higher transverse stability in the gliding process; compared with the traditional paper plane, the novel paper plane has the advantages that the novel paper plane can realize the convolution type stunt flight effect, provides more flight postures of the paper plane for teenagers and children, is easy to fold and adjust, and is high in interestingness and strong in playability.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic front view of the present invention;

fig. 3 is a rear view structure diagram of the present invention;

fig. 4 is a schematic top view of the present invention;

fig. 5 is a schematic side view of the present invention;

in the figure: 1. the airplane body, 2, a seal head, 3, a main wing, 4, a vertical winglet, 5, a vertical tail wing, 6, an elevator, 7 and an auxiliary wing.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

A rotary paper aircraft comprises an aircraft body 1 and wings, wherein the wings are symmetrically distributed on two sides of the aircraft body 1 and horizontally spread to the whole body, the head part of the aircraft body 1 is provided with a seal head 2 capable of locking the aircraft body 1, and the wings are special wings with straight front edges and sweepforward rear edges and narrow wings at wing tips; the wingtip of the wing is provided with an upward vertical winglet (4), and the rear edge of the wing is provided with an upward bent elevator (6); the tail part of the machine body 1 is provided with an upward vertical tail wing 5.

The utility model discloses paper aircraft is by whole paper vertical cutting back half, forms according to the order folding, need not supplementary measures such as pasting, tailorring.

As shown in the attached figures 1-3,

the wings are symmetrically distributed on two sides of the fuselage and horizontally spread to the whole body, and the wings are special wings with straight front edges and forward swept back edges and narrow wings at wing tips. The wing middle section has a longitudinal fold to allow the wing outboard to droop, while the wing root has a dihedral angle a.

The wingtip is upward vertical winglet 4, the trailing edge of the wing is provided with an upward bent elevator, the tail of the fuselage is upward vertical tail wing, and the head of the fuselage is provided with a seal head 2 capable of locking the fuselage structure. In order to improve the lateral stability of the paper plane and prevent the paper plane from rolling over when the paper plane revolves, a vertical winglet 4 parallel to the plane body is designed at the wing tip of the airplane.

Further, a longitudinal fold is formed in the middle section of the wing to deflect the wing, and as shown in fig. 3, a dihedral angle a is formed at the root of the wing.

Further, the size of the dihedral angle is 10-30 degrees.

In order to enable the aircraft to swivel better, in this embodiment the dihedral angle a of the wing root is 25 °.

If want to make the paper aircraft can the lateral direction rotatory flight and the stability of gliding after throwing out the hand, should rationally arrange whole folding method structure for the lift center is before the focus position, and the lift center should be closer to the aircraft nose than the focus position promptly. Therefore, the paper plane can be subjected to the action of moment of couple in the flying process, so that the plane is subjected to head-up moment, and the paper plane climbs. The rotary paper plane should direct the horizontal component of the lift force to the center of rotation to provide centripetal force in order to make the paper plane fly rotationally sideways during throwing, so the rotary paper plane should slightly deflect the plane to the target direction of rotation when throwing. It should be noted that in order to allow a smooth head-up climb of a paper aircraft, it should be avoided that the center of lift is too far forward.

Further, the wing comprises a main wing 3 and an auxiliary wing 7, the vertical winglet 4 is arranged at the tip of the auxiliary wing 7, and the elevator 6 is arranged at the rear edge of the main wing 3.

The wings comprise a main wing 3 and an auxiliary wing 7, and are of an integral structure in a deflection modeling, and in order to improve the transverse stability of the paper plane and prevent the paper plane from turning over when the paper plane circles, the wing tip of the paper plane is provided with a vertical winglet 4 parallel to the plane body.

Further, the width of the elevator 6 is smaller than the width of the trailing edge of the main wing 3. The width of the elevator 6 cannot be too large and needs to be smaller than the width of the rear edge of the main wing 3, so that the elevator can be conveniently butted with airflow and keep rising and rotating.

Further, an upturning angle a of 0-60 degrees is arranged on the elevator 6.

The preferred flip-up angle a of the elevator 6 of this embodiment is 45.

Further, the trailing edge sweep angle c of the main wing 3 is 20-30 °.

The present embodiment sets the trailing edge sweep angle c of the main wing 3 to be preferably 30 °

Further, the included angle between the auxiliary wing 7 and the horizontal direction is 10-30 degrees.

The preferred angle b between the aileron 7 and the horizontal is set in this embodiment to 30 °.

In order to obtain higher gliding performance and improve the convolution success rate and the ornamental value, resistance should be properly introduced at the front edge of the wing, and the resistance borne by the paper plane is controlled within a reasonable range. The machine designs a resistance structure at the front edge of the wing. The shape is a dense short fold, which is a folded configuration (not shown) at the leading edge of the wing, thereby increasing the frictional resistance between the paper aircraft and the air. The aircraft can be raised more quickly and the maneuverability is stronger by properly increasing the resistance, and the gliding speed of the paper aircraft can also be reduced, so that the idle time of the paper aircraft is longer, and the interestingness and the ornamental value are improved.

In order to increase the success rate of the convolution, the paper aircraft should have higher maneuverability. The wing of the aircraft adopts a mixed layout of an upper dihedral angle and a lower dihedral angle, and adopts a design with smaller wing load and a design with larger aspect ratio. The wing root uses the dihedral angle can make the gliding process of circling round more stable, prevents to take place to turn on one's side, and the wing outside uses the down dihedral angle multiplicable aircraft's mobility for the aircraft can turn more steadily rapidly. The machine adopts a design with smaller wing load, and the average wing load is 0.0162g/cm². In addition, the formula of the aspect ratio is: aspect ratio being the square of the wing span/wing area, i.e.

The aspect ratio of the machine is 2.23, becauseThe maximum aspect ratio of the paper plane is limited by the size of paper, and the aspect ratio of the plane is close to the maximum aspect ratio within a reasonable range.

Through folding, the paper aircraft focus moves forward. The vertical tail wing which is vertically upturned is designed at the rear edge of the airplane, so that the course stability of the paper airplane can be improved, a part of rudder lifting effect can be achieved, the head raising speed of the paper airplane is improved, and the maneuverability is improved. If the maneuverability of the machine is still low or the turning is slow, the balancing is carried out by the elevator with the rear edge bent upwards, and the angle of the rear edge bent upwards is between 0 and 60 degrees. It is worth mentioning that the increase of the bending angle of the elevator can not only increase the maneuverability of the paper plane, but also reduce the turning radius; in a similar way, the turning radius can be increased by reducing the bending angle of the elevator, so that the turning radius of the aircraft can be adjusted, and the flight postures are more diversified.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotary paper aircraft comprises an aircraft body (1) and wings, wherein the wings are symmetrically distributed on two sides of the aircraft body (1) and horizontally spread to the whole body, and the head of the aircraft body (1) is provided with a seal head (2) capable of locking the aircraft body (1), and the rotary paper aircraft is characterized in that the wings are flat at the front edge and forward swept at the rear edge, and the wings at the wing tips are narrow; the wingtip of the wing is provided with an upward vertical winglet (4), and the trailing edge of the wing is provided with an upward bent elevator (6); the tail part of the machine body (1) is provided with an upward vertical tail wing (5).

2. The rotary paper aircraft as claimed in claim 1, wherein said wing has a longitudinal fold at its midsection and a dihedral at its root.

3. A rotary paper aircraft as claimed in claim 2, wherein said dihedral angle is in the range of 10-30 °.

4. A rotary paper aircraft according to any one of claims 1 to 3, wherein the wings comprise a main wing (3) and an auxiliary wing (7), the vertical winglet (4) being provided at the tip of the auxiliary wing (7), and the elevator (6) being provided at the trailing edge of the main wing (3).

5. A rotary paper aircraft according to claim 4, characterized in that the width of the elevator (6) is smaller than the width of the trailing edge of the main wing (3).

6. A rotary paper aircraft according to claim 1 or 5, characterized in that the elevators (6) are provided with an upturn angle of 0-60 °.

7. A rotary paper aircraft according to claim 4, characterized in that the trailing edge sweep of the main wing (3) is 20-30 °.

8. A rotary paper aircraft according to claim 7, characterized in that the angle between the auxiliary wing (7) and the horizontal is 10-30 °.

9. A rotary paper aircraft as claimed in claim 1 or 8, wherein said leading edge of said wing is provided with resistive structures which are closely spaced short folds.

10. The rotary paper aircraft as claimed in claim 9, wherein said wing average wing load is from 0.0160 to 0.0165g/cm²(ii) a The aspect ratio is 2.15-2.30.