阅读说明：本技术 一种辅助推进装置及电动飞机 (Auxiliary propulsion device and electric aircraft ) 是由 崔峥 严子焜 霍满 张文升 王琦峰 邹灿东 于 2021-03-10 设计创作，主要内容包括：本发明属于电动航空技术领域,公开一种辅助推进装置及电动飞机,所述辅助推进装置包括中央体翼、短舱和动力机构,短舱固定在中央体翼上,短舱与中央体翼之间形成涵道,动力机构包括电池和第一推进件,电池安装在中央体翼的容置空间中,第一推进件与电池电连接,第一推进件安装于涵道中；所述电动飞机包括飞机本体、第二推进件和上述的辅助推进装置,第二推进件安装在飞机本体上,辅助推进装置对接在飞机本体上。辅助推进装置设置为飞翼布局,提高了升阻比,结构紧凑,增加了容置空间内的电池容积,并且短舱的设置增加了第一推进件的安装尺寸；进而辅助推进装置辅助第二推进件来驱动飞机本体飞行,提高了电动飞机的飞行航程。(The invention belongs to the technical field of electric aviation, and discloses an auxiliary propulsion device and an electric airplane, wherein the auxiliary propulsion device comprises a central body wing, a nacelle and a power mechanism, the nacelle is fixed on the central body wing, a duct is formed between the nacelle and the central body wing, the power mechanism comprises a battery and a first propulsion piece, the battery is arranged in an accommodating space of the central body wing, the first propulsion piece is electrically connected with the battery, and the first propulsion piece is arranged in the duct; the electric airplane comprises an airplane body, a second propelling piece and the auxiliary propelling device, wherein the second propelling piece is installed on the airplane body, and the auxiliary propelling device is butted on the airplane body. The auxiliary propelling device is arranged in a flying wing layout, so that the lift-drag ratio is improved, the structure is compact, the battery volume in the accommodating space is increased, and the installation size of the first propelling part is increased due to the arrangement of the nacelle; and then supplementary advancing device assists the second propulsion piece and drives the flight of aircraft body, has improved electric aircraft's flight journey.)

1. An auxiliary propulsion device, comprising:

the wing-shaped body comprises a central body wing (1), wherein an accommodating space is arranged in the central body wing (1);

the nacelle (2) is fixed on the central body wing (1), and a duct (21) is formed between the nacelle (2) and the central body wing (1);

the power mechanism (3) is used for providing driving force, the power mechanism (3) comprises a battery and a first propelling piece (31), the battery is installed in the accommodating space, the first propelling piece (31) is electrically connected with the battery, and the first propelling piece (31) is installed in the duct (21).

2. Auxiliary propulsion device according to claim 1, characterized in that it also comprises a tail (4), said tail (4) penetrating the nacelle (2) and being connected to the central body wing (1), said tail (4) dividing the duct (21).

3. Auxiliary propulsion device according to claim 2, characterised in that the end of the tail wing (4) remote from the central body wing (1) extends out of the nacelle (2) and is inclined in the driving direction of the power unit (3).

4. Auxiliary propulsion device according to claim 3, characterised in that the tail wing (4) is provided with an electrical interface at its end remote from the central body wing (1).

5. Auxiliary propulsion device according to claim 1, characterized in that the wetted area-aspect ratio of the central body panel (1) is greater than 6.5.

6. Auxiliary propulsion device according to claim 1, characterized in that the front part of the central body wing (1) is arranged with a recurved camber.

7. Auxiliary propulsion device according to claim 1, characterized in that said central body wing (1) and said nacelle (2) are both provided with an axisymmetric shape, the symmetry axes of said central body wing (1) and said nacelle (2) being identical.

8. Auxiliary propulsion device according to claim 7, characterized in that said central body flap (1) comprises a first body flap (11) and a second body flap (12) integrally formed, said first body flap (11) and said second body flap (12) being symmetrically arranged along said symmetry axis, said first body flap (11) and said second body flap (12) being tilted in the opposite direction of the driving direction of said power mechanism (3).

9. Auxiliary propulsion device according to claim 8, characterized in that the width of the first body flap (11) and the second body flap (12) decreases gradually in a direction away from the axis of symmetry.

10. An electric aircraft, comprising:

an aircraft body (300);

a second propelling member (200) mounted on the aircraft body (300), the second propelling member (200) being capable of driving the aircraft body (300) to fly;

the auxiliary propulsion device (100) of any one of claims 1 to 9, said auxiliary propulsion device (100) being docked to said aircraft body (300) and being able to drive said aircraft body (300) in flight.

Technical Field

The invention relates to the technical field of electric aviation, in particular to an auxiliary propulsion device and an electric airplane.

Background

With the development of new energy technologies, more and more countries and enterprises begin to lay out the electric aviation field. Specifically, the biggest technical challenges faced by the development of various electric airplanes are that the key performance indexes of the electric propulsion system are low, the technology is immature, the weight is too large, and the minimum use requirements of the electric airplane can only be met, wherein the electric airplane has insufficient energy density of a battery, and the electric propulsion system has too large weight, which is the biggest problem in the design of the electric airplane, so that the flight range of the electric airplane cannot meet the requirements. The prior art has a technical scheme that an auxiliary propulsion device is used for assisting to drive an electric airplane, but insufficient thrust and limited battery capacity of the auxiliary propulsion device are problems to be solved.

In view of the above situation, it is desirable to design an auxiliary propulsion device and an electric aircraft to solve the above problems.

Disclosure of Invention

One object of the present invention is: the auxiliary propelling device can increase the battery capacity of the accommodating space and the installation size of the first propelling piece, and further improve the capacity of the battery and the propelling force of the first propelling piece.

Another object of the invention is: the electric airplane comprises the auxiliary propulsion device, and the flight range of the electric airplane can be improved.

In order to achieve the purpose, the invention adopts the following technical scheme:

in one aspect, an auxiliary propulsion device is disclosed, comprising:

the central body wing is internally provided with an accommodating space;

the nacelle is fixed on the central body wing, and a duct is formed between the nacelle and the central body wing;

the power mechanism is used for providing driving force and comprises a battery and a first propelling piece, the battery is installed in the accommodating space, the first propelling piece is electrically connected with the battery, and the first propelling piece is installed in the duct.

Preferably, the auxiliary propulsion device further comprises a tail wing extending through the nacelle and connected to the central body wing, the tail wing dividing the duct.

Preferably, one end of the tail wing, which is far away from the central body wing, extends out of the nacelle and inclines along the driving direction of the power mechanism.

Preferably, the end of the tail remote from the central body panel is provided with an electrical interface.

Preferably, the wetted area-aspect ratio of the central body panel is greater than 6.5.

Preferably, the front portion of the central body panel is configured to be recurved.

Preferably, the central body wing and the nacelle are provided with an axisymmetrical shape, and the symmetry axes of the central body wing and the nacelle are the same.

Preferably, the central body wing includes a first body wing and a second body wing which are integrally formed, the first body wing and the second body wing are symmetrically disposed along the symmetry axis, and the first body wing and the second body wing are tilted in a direction opposite to a driving direction of the power mechanism.

Preferably, the first flap and the second flap gradually decrease in width in a direction away from the axis of symmetry.

In another aspect, an electric aircraft is also disclosed, comprising:

an aircraft body;

the second propelling piece is mounted on the airplane body and can drive the airplane body to fly;

the auxiliary propulsion device is butted on the airplane body and can drive the airplane body to fly.

The invention has the beneficial effects that: the auxiliary propulsion device is arranged in a flying wing layout, the lift-drag ratio is improved, the structure is compact, the battery capacity of the accommodating space in the central body wing is increased, the installation size of the first propulsion piece is increased due to the arrangement of the nacelle, and the capacity of the battery and the thrust of the first propulsion piece are further improved; the auxiliary propelling device of the electric airplane assists the second propelling part to drive the airplane body to fly, and the flying range of the electric airplane is improved.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

FIG. 1 is a schematic structural diagram of an auxiliary propulsion device according to an embodiment;

FIG. 2 is a front view of the auxiliary propulsion device of FIG. 1;

FIG. 3 is a side view of the auxiliary propulsion device of FIG. 1;

fig. 4 is a schematic structural diagram of an electric aircraft according to an embodiment.

In fig. 1 to 4:

100. an auxiliary propulsion device;

1. a central body wing; 11. a first body wing; 12. a second body wing;

2. a nacelle; 21. a duct;

3. a power mechanism; 31. a first pusher;

4. a tail wing;

200. a second pusher member;

300. an aircraft body.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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 invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1-3, the present embodiment provides an auxiliary propulsion device, which includes a central body wing 1, a nacelle 2 and a power mechanism 3, wherein the central body wing 1 is provided with an accommodating space therein; the nacelle 2 is fixed on the central body wing 1, and a duct 21 is formed between the nacelle 2 and the central body wing 1; the power mechanism 3 is used for providing a driving force, the power mechanism 3 includes a battery and a first propelling part 31, the battery is installed in the accommodating space, the first propelling part 31 is electrically connected with the battery, and the first propelling part 31 is installed in the duct 21. The first propelling part 31 in the embodiment is provided with a propelling fan, the nacelle 2 is provided with an arc shape, the arc-shaped nacelle 2 is fixed on the central body wing 1, and a duct 21 for installing the propelling fan is formed between the nacelle 2 and the central body wing 1, so that the installation size of the propelling fan is increased, and the propelling force of the propelling fan can be improved; the main body part of the auxiliary propulsion device is the central body wing 1, and it can be understood that the auxiliary propulsion device is arranged in a flying wing layout, the lift-drag ratio is improved, the accommodating space for installing the battery is arranged in the central body wing 1, the installation volume of the battery is increased, the battery capacity of the auxiliary propulsion device is further improved, and the battery is electrically connected with the propulsion fan and can provide the driving force for flying.

In this embodiment, the auxiliary propulsion device further comprises a tail 4, the tail 4 extending through the nacelle 2 and being connected to the central body wing 1, the tail 4 dividing the duct 21. The empennage 4 and the nacelle 2 are provided in an integrated configuration, and the root of the empennage 4 near the central body panel 1 divides the duct 21 into two equal parts, although in other embodiments of the invention, the root of the empennage 4 near the central body panel 1 may divide the duct 21 into other desired parts. Specifically, the end of the empennage 4 and the two ends of the nacelle 2 are connected to the central body wing 1 to constitute a three-point support structure capable of dispersing the pressure applied to the central body wing 1 by the empennage 4 and the nacelle 2 or the gravity thereof, and the root of the empennage 4 near the central body wing 1 is configured as an intermediate wall of the nacelle 2, on the one hand, the strength and rigidity of the nacelle 2 are improved; on the other hand, the nacelle 2 also helps the tail 4 to transfer bending loads, improving reliability.

In this embodiment, the end of the tail 4 remote from the central wing 1 extends out of the nacelle 2 and is inclined in the driving direction of the power mechanism 3. It will be appreciated that the tail 4 is arranged as a swept forward tail 4, optionally with the forward end of the tail 4 flush with the forward end of the central body panel 1, so that when the auxiliary propulsion device is moved, the swept forward tail 4 can interface with external equipment, avoiding direct collision of the central body panel 1 and the nacelle 2 with external equipment, improving reliability.

In particular, the end of the tail 4 remote from the central body panel 1 is provided with an electrical interface. The electrical interface can be set up to the interface that charges, power supply interface or communication interface, when fin 4 of sweepforward formula docks with external equipment, through the electrical interface, supplementary advancing device is connected with the external equipment electricity, and then supplementary advancing device can charge, power supply or communication, has improved supplementary advancing device's functionality.

In this embodiment, the wetted area aspect ratio of the central body wing 1 is greater than 6.5, so that the lift-drag ratio of the auxiliary propulsion device is greater than 22:1, and the aerodynamic efficiency is improved.

In the present embodiment, the front portion of the central body panel 1 is set to be recurved. In particular, the central wing 1 front part of the recurved design enables to move the centre of gravity of the auxiliary propulsion device towards the front part of the central wing 1, thus improving the longitudinal stability of the auxiliary propulsion device.

In the present embodiment, the central body panel 1 and the nacelle 2 are provided in an axisymmetrical shape, and the symmetric axes of the central body panel 1 and the nacelle 2 are the same. The central body wing 1, the nacelle 2 and the tail fin 4 are all arranged in an axisymmetric shape, and the symmetric axes thereof are the same, it can be understood that the auxiliary propulsion device is arranged in an axisymmetric shape, and the stress on both sides of the whole body is balanced.

Specifically, the central body wing 1 includes a first body wing 11 and a second body wing 12 which are integrally formed, the first body wing 11 and the second body wing 12 are symmetrically disposed along a symmetry axis, and the first body wing 11 and the second body wing 12 are inclined in a direction opposite to a driving direction of the power mechanism 3. And the widths of the first body flap 11 and the second body flap 12 gradually decrease in a direction away from the axis of symmetry. The first body wing 11 and the second body wing 12 are arranged in a backswept mode, so that the frontal impact of airflow on the central body wing 1 can be reduced, and the motion resistance of the auxiliary propulsion device is further reduced; the widths of the first body wing 11 and the second body wing 12 are gradually reduced, and the movement resistance of the auxiliary propulsion device can be reduced on the premise that the requirement of the auxiliary propulsion device for the lifting force is met.

As shown in fig. 4, the embodiment further provides an electric airplane, which includes an airplane body 300, a second propelling member 200 and the auxiliary propelling device 100, wherein the second propelling member 200 is mounted on the airplane body 300, and the second propelling member 200 can drive the airplane body 300 to fly; the auxiliary propulsion device 100 is docked on the aircraft body 300 and is capable of driving the aircraft body 300 to fly. The auxiliary propulsion device 100 is designed to be in a flying wing layout, so that the battery capacity of the accommodating space in the central body wing 1 is increased, the installation size of the first propulsion element 31 is increased due to the arrangement of the nacelle 2, the battery capacity and the thrust of the first propulsion element 31 are improved, further, the auxiliary propulsion device 100 assists the second propulsion element 200 to drive the aircraft body 300 to fly, and the flight range of the electric aircraft is improved.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.