CN114940260A - Fan wing structure and aircraft with same - Google Patents

Abstract

The application relates to a fan wing structure including a fan wing, an impeller and a baffle, wherein: the upper wing surface of the fan wing is inclined downward from the leading edge part to the rear edge part to form an inclined surface; the leading edge part of the fan wing is provided with Impeller installation groove, the impeller installation groove extends along the span of the fan wing, and the cross section is arc-shaped; the impeller is installed in the impeller installation groove; the baffle is connected to the inclined surface, forming a suction groove with the inclined surface; suction The inlet end of the slot extends to the intersection of the inclined surface and the impeller installation slot, and the outlet end faces the rear edge of the fan blade. When the impeller rotates at a high speed, part of the air flow will flow along the outer wall of the baffle and face the rear edge of the fan blade. The outlet end of the suction groove forms a negative pressure area, so that the gas accumulated at the intersection of the inclined surface of the upper airfoil of the fan blade and the impeller installation groove can be sucked, which can effectively reduce the positive pressure area at this position and ensure the fan The lift effect of the wing structure. In addition, it relates to a fan-wing aircraft, comprising: the above-mentioned fan-wing structure.

Description

A fan wing structure and an aircraft having the same

technical field

The application belongs to the technical field of fan wing structure design of fan-wing aircraft, and in particular relates to a fan-wing structure and an aircraft thereof.

Background technique

The fan wing aircraft relies on the fan wing structure to generate thrust and lift. The current fan wing structure includes: fan wings and impellers, wherein the upper wing surface of the fan wing slopes downward from the leading edge to the trailing edge to form an inclined surface, and the fan wing There is an impeller installation groove at the leading edge of the fan blade. The impeller installation groove extends along the span of the fan wing, and the cross section is arc-shaped. The impeller is installed in the impeller installation groove. It is ejected downward to generate thrust, and the airflow generates an eccentric vortex in the impeller installation groove, thereby generating lift, as shown in Figure 1.

In practice, the high-speed rotation of the impeller will cause the airflow to generate a large positive pressure area at the intersection of the inclined surface of the upper airfoil of the fan wing and the curved surface of the impeller installation groove, which will affect the lift effect of the fan wing structure.

The present application is made in view of the existence of the above-mentioned technical defects.

It should be noted that the disclosure of the above background technology content is only used to assist the understanding of the inventive concept and technical solution of the present invention, and it does not necessarily belong to the prior art of the present patent application. If the filing date has been disclosed, the above background art should not be used to evaluate the novelty and inventive step of the present application.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a wing structure and an aircraft having the same to overcome or alleviate the known technical defects in at least one aspect.

The technical solution of this application is:

In one aspect, a fan wing structure is provided, comprising a fan wing, an impeller, and a baffle, wherein:

The upper wing surface of the fan wing slopes downward from the leading edge to the trailing edge to form an inclined surface;

The front edge of the fan blade is provided with an impeller installation groove, and the impeller installation groove extends along the span direction of the fan blade, and the cross section is arc-shaped;

The impeller is installed in the impeller installation groove;

The baffle is connected to the inclined surface, and a suction groove is formed between the inclined surface; the inlet end of the suction groove extends to the intersection of the inclined surface and the impeller installation groove, and the outlet end faces the rear edge of the fan blade.

According to at least one embodiment of the present application, in the above-mentioned fan wing structure, the baffle is a blade shape.

According to at least one embodiment of the present application, in the above-mentioned fan wing structure, the baffle is parallel to the inclined surface.

According to at least one embodiment of the present application, in the above-mentioned fan blade structure, the height of the suction groove is 0.3 to 0.5 times the spacing between the impeller blades.

Another aspect provides a fan-wing aircraft, comprising:

Any of the above-mentioned fan wing structures.

This application has at least the following beneficial technical effects:

On the one hand, a fan wing structure is provided, which is provided with a baffle plate on the inclined surface of the upper wing surface of the fan wing, the baffle plate is located at the rear of the impeller, and a suction groove is formed between the baffle plate and the inclined surface, and the inlet end of the suction groove extends to the inclined surface. At the intersection with the impeller installation groove, the outlet end faces the rear edge of the fan blade. When the impeller rotates at high speed, part of the air flow will flow along the outer wall of the baffle and face the rear edge of the fan blade, forming a negative pressure at the outlet end of the suction groove. In this way, the gas accumulated at the intersection of the inclined surface of the upper airfoil of the fan blade and the impeller installation groove can be sucked, thereby reducing the intersection of the inclined surface of the upper airfoil of the fan blade and the arc surface of the impeller installation groove. The positive pressure area at the location ensures the lift effect of the fan wing structure.

On the other hand, a fan-wing aircraft is provided, which includes the fan-wing structure disclosed in the above embodiments, and its technical effect can be understood with reference to the technical effect of the above-mentioned fan-wing structure, which will not be repeated here.

Description of drawings

Fig. 1 is the schematic diagram of existing fan wing structure;

2 is a schematic diagram of a fan wing structure provided by an embodiment of the present application;

in:

1-fan wing; 2-impeller; 3-baffle.

In order to better illustrate the present embodiment, some parts of the drawings are omitted, enlarged or reduced, which do not represent the size of the actual product. In addition, the drawings are only used for exemplary illustration and should not be construed as a limitation on this patent.

Detailed ways

In order to make the technical solution of the present application and its advantages more clear, the technical solution of the present application will be further described in detail and completely with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the present application. The examples are only used to explain the present application, but not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, and other related parts may refer to the general design. If there is no conflict, the embodiments in the present application and the techniques in the embodiments Features can be combined with each other to obtain new embodiments.

Also, unless otherwise defined, technical or scientific terms used in the description of this application shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. The words "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", etc. used in the description of this application to indicate orientation are only used To indicate the relative direction or positional relationship, rather than implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and when the absolute position of the described object changes, its relative positional relationship may also change accordingly. , so it cannot be construed as a limitation on this application. The terms "first", "second", "third" and similar terms used in the description of this application are only used for the purpose of description, to distinguish different components, and cannot be construed as indicating or implying relative importance. Words like "a," "an," or "the" and the like used in the description of this application should not be construed as an absolute limitation on the quantity, but rather as the presence of at least one. As used in the description of this application, "comprises" or "comprises" and similar words mean that the elements or things appearing before the word encompass the elements or things listed after the word and their equivalents, but do not exclude other elements or things.

In addition, it should be noted that, unless otherwise expressly specified and limited, the words "installed", "connected", "connected" and the like used in the description of this application should be understood in a broad sense, for example, the connection may be a fixed The connection can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two components. A skilled person can understand its specific meaning in this application according to specific circumstances.

The present application will be further described in detail below with reference to FIGS. 1 to 2 .

On the one hand, a fan wing structure is provided, comprising a fan wing 1, an impeller 2, and a baffle 3, wherein:

The fan wing 1 is used as a bearing wing, and its upper wing surface is inclined downward from the leading edge to the trailing edge to form an inclined surface. The leading edge is provided with an impeller installation groove, and the impeller installation groove extends along the span direction of the fan wing 1, horizontally. The section is arc-shaped;

The impeller 2 is installed in the impeller installation groove;

The baffle 3 is connected to the inclined surface, and a suction groove is formed between the inclined surface; the inlet end of the suction groove extends to the intersection of the inclined surface and the impeller installation groove, and the outlet end faces the rear edge of the fan blade 1.

For the fan wing structure disclosed in the above-mentioned embodiments, those skilled in the art can understand that a baffle 3 is provided on the inclined surface of the upper wing surface of the fan blade 1, and the baffle 3 is located at the rear of the impeller 2, which is opposite to the inclined surface. A suction groove is formed between the suction grooves, the inlet end of the suction groove extends to the intersection of the inclined surface and the impeller installation groove, and the outlet end faces the rear edge of the fan blade 1. When the impeller 2 rotates at a high speed, part of the air flow will follow the direction of the baffle plate 3. The outer wall flows towards the rear edge of the fan blade 1, and a negative pressure area is formed at the outlet end of the suction groove, so that the gas accumulated at the intersection of the inclined surface of the upper blade surface of the fan blade 1 and the impeller installation groove can be sucked, thereby The positive pressure area at the intersection of the inclined surface of the upper wing surface of the fan wing 1 and the arc surface in the impeller installation groove can be reduced, so as to ensure the lift effect of the fan wing structure.

In some optional embodiments, in the above-mentioned fan wing structure, the baffle plate 3 is in the shape of a blade to ensure the aerodynamic performance of the air flow on it, so that a negative pressure with lower pressure can be formed at the outlet end of the suction groove. nip.

In some optional embodiments, in the above-mentioned fan wing structure, the baffle 3 is parallel to the inclined surface, so as to effectively prevent the intersection of the inclined surface of the wing surface of the fan wing 1 and the arc-shaped surface in the impeller installation groove. The accumulated gas is sucked to reduce the positive pressure area at the intersection of the inclined surface of the upper wing surface of the fan wing 1 and the arc surface in the impeller installation groove, so as to ensure the lift effect of the fan wing structure.

In some optional embodiments, in the above-mentioned fan blade structure, the height of the suction groove is 0.3-0.5 times the distance between the blades of the impeller 2 .

Another aspect provides a fan-wing aircraft, comprising:

Any of the above-mentioned fan wing structures. For the fan-wing aircraft disclosed in the above embodiments, those skilled in the art can understand that it includes the fan-wing structure disclosed in the above-mentioned embodiments, and the description is relatively simple. For the technical effect, reference may also be made to the technical effect of the relevant part of the fan wing structure, which will not be repeated here.

The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

So far, the technical solutions of the present application have been described with reference to the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the protection scope of the present application is obviously not limited to these specific embodiments, without departing from the principles of the present application. Under the premise that those skilled in the art can make equivalent changes or replacements to the relevant technical features, the technical solutions after these changes or replacements will fall within the protection scope of the present application.

Claims (5)

1. A wing structure, characterized in that, comprising a wing (1), an impeller (2), a baffle (3), wherein: The upper wing surface of the fan wing (1) is inclined downward from the front edge part to the rear edge part to form an inclined surface; An impeller installation groove is provided on the front edge of the fan blade (1), the impeller installation groove extends along the span direction of the fan blade (1), and the cross section is arc-shaped; The impeller (2) is installed in the impeller installation groove; The baffle (3) is connected to the inclined surface and forms a suction groove with the inclined surface; the inlet end of the suction groove extends to the intersection of the inclined surface and the impeller installation groove At the position, the outlet end faces the rear edge position of the fan blade (1). 2. fan wing structure according to claim 1, is characterized in that, The baffle (3) is in the shape of a blade. 3. fan wing structure according to claim 1, is characterized in that, The baffle (3) is parallel to the inclined surface. 4. fan wing structure according to claim 1, is characterized in that, The height of the suction groove is 0.3-0.5 times the spacing between the blades of the impeller (2). 5. a fan-wing aircraft, is characterized in that, comprises: The fan wing structure according to any one of claims 1-4.

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