WO2017215529A1

WO2017215529A1 - Propeller and fuselage

Info

Publication number: WO2017215529A1
Application number: PCT/CN2017/087768
Authority: WO
Inventors: 胡华智
Original assignee: 亿航智能设备（广州）有限公司
Priority date: 2016-06-13
Filing date: 2017-06-09
Publication date: 2017-12-21
Also published as: CN206170762U

Abstract

A propeller and a fuselage, comprising a forming foam (10), at least one first fiber fabric layer (20) provided on an upper surface of the forming foam (10), and at least one second fiber fabric layer (30) provided on a lower surface of the forming foam (10); the first fiber fabric layer (20) and the second fiber fabric layer (30) are both soaked with first gels (40). The propeller and the fuselage having the structure are light in weight, stronger in cruising ability, and high in strength and toughness, and are easy to form.

Description

Propeller and fuselage

[0001] The present application relates to the field of drone technology, and in particular, to a propeller and a fuselage.

Background technique

[0002] UAVs are widely used in various fields due to their high portability, simple operation and flexible use. Among them, body material technology is one of the key technologies of UAVs. Materials used in various parts of UAVs. It directly affects the weight, structural strength and endurance of the drone. In order to ensure the structural strength of the drone, the materials currently used by the drone are generally titanium alloy, aluminum alloy or carbon fiber. These materials are easy to process, and the molding method is simple, but the weight is large, which seriously affects the endurance.

technical problem

Problem solution

Technical solution

[0003] It is an object of the present application to provide a composite structure applied to an aircraft, such as a propeller and a fuselage, which can reduce the weight of the material and make the life of the drone stronger.

[0004] For the purposes of the present application, the technical solution adopted is:

[0005] A propeller comprising a molding foam, at least one first fiber fabric layer disposed on an upper surface of the molding foam, and at least one second fiber fabric layer disposed on a lower surface of the molding foam, Both the first fibrous fabric layer and the second fibrous fabric layer are impregnated with a first colloid.

[0006] The following further explains the technical solution:

Further, a cavity is formed between the first fiber fabric layer and the second fiber fabric layer, and the molding foam is disposed in the cavity.

Further, the thickness of the molding foam is greater than the thickness of the cavity, and the molding foam has an interference fit with the cavity.

[0009] Further, the propeller includes a UD fabric layer, and at least one UD fabric layer and/or the second fabric layer and the At least one layer of UD cloth is disposed between the molding foams, wherein the UD cloth layer is impregnated with the first colloid. [0010] Further, the propeller includes two layers of the first fiber fabric layer and/or the propeller includes two layers of the second fiber fabric layer.

[0011] Further, the propeller includes three layers of the UD fabric layer, and the first fiber fabric layer and the molding foam are provided with three layers of the UD fabric layer, or/and a second fiber fabric. Three layers of the UD fabric layer are provided between the layer and the shaped foam.

[0012] Further, a first UD fabric layer is disposed on a bottom surface of the first woven fabric layer, a second UD fabric layer is disposed on a bottom surface of the first UD fabric layer, and a second UD fabric layer is disposed on a bottom surface of the second UD fabric layer a third UD fabric layer, a bottom surface of the third UD fabric layer is adhered to the upper surface of the molding foam, a length of the first UD fabric layer is greater than a length of the second UD fabric layer, and the second UD fabric layer The length is greater than the length of the third UD fabric layer.

[0013] Further, the center of the length of the first UD fabric layer, the second UD fabric layer, and the third UD fabric layer overlaps with the center of the length of the propeller.

[0014] Further, the first fabric layer and the second fabric layer are carbon fiber fabrics.

[0015] Further, the first colloid is an epoxy resin.

[0016] The present application also provides a fuselage comprising a molding foam, at least one first fiber fabric layer disposed on an upper surface of the molding foam, and at least one layer second disposed on a lower surface of the molding foam The fiber fabric layer, the first fabric layer and the second fabric layer are both impregnated with a first colloid.

[0017] Further, the fuselage includes two layers of the first fabric layer, or/and the fuselage includes two layers of the second fabric layer.

[0018] Further, the fuselage includes a UD fabric layer, and at least one UD fabric layer is disposed between the first fiber fabric layer and the molding foam, and/or the second fabric layer and At least one UD fabric layer is disposed between the molding foams, wherein the UD fabric layer is impregnated with the first colloid.

[0019] Further, a first UD fabric layer is disposed on a bottom surface of the first fiber fabric layer, a second UD fabric layer is disposed on a bottom surface of the first UD fabric layer, and a second bottom surface of the second UD fabric layer is provided a third UD fabric layer, a bottom surface of the third UD fabric layer is adhered to the upper surface of the molding foam, a length of the first UD fabric layer is greater than a length of the second UD fabric layer, and the second UD fabric layer The length is greater than the length of the third UD fabric layer.

[0020] Further, the fiber fabric layer and the second fiber fabric layer are carbon fiber fabrics.

[0021] Further, the first colloid is an epoxy resin.

[0022] Further, the first fabric layer, the UD fabric layer, the molding foam, and the The second fiber fabric layer is bonded, and the first fiber fabric layer, the UD cloth layer, the molding foam, and the second fiber fabric layer are bonded by vacuuming.

Advantageous effects of the invention

Beneficial effect

[0023] The propeller of the propeller and the fuselage of the present application is made of foam material, and the foam is light, which can greatly reduce the weight of the propeller and the fuselage, and make the drone's endurance more powerful, and the elastic property of the foam can also increase the paddle. Strength toughness; and the first fiber fabric layer and the second fiber fabric layer are both impregnated with the first colloid, the first colloid solidifies and hardens the first fiber fabric layer and the second fiber fabric layer, and is more easily formed; plus the first fiber fabric A three-layer UD fabric layer is disposed between the layer and the molding foam, between the second fiber fabric layer and the molding foam, and the entire strength of the UD fabric layer is in the first direction, increasing the strength of the propeller and the fuselage, and The UD fabric layer bonded to the fiber fabric layer has the longest length, and the length of the UD fabric layer bonded to the molded foam is the shortest, and the strength of the propeller and the fuselage is increased, and the weight of the propeller and the fuselage is not affected too much. Large, making the overall characteristics of the propeller and fuselage better.

Brief description of the drawing

DRAWINGS

1 is a schematic structural view of a propeller according to a first embodiment of the present application;

2 is a schematic structural view of a propeller according to a second embodiment of the present application;

3 is a schematic structural view of a fuselage according to a first embodiment of the present application;

4 is a schematic structural view of a fuselage of a second embodiment of the present application.

[0028] Description of the reference numerals:

[0029] 10. Forming foam, 20. First fabric layer, 30. Second fabric layer, 40. First colloid, 50. UD fabric, 510. First UD fabric, 520. Second UD fabric Layer, 530. third UD fabric layer, 60. mold clamping glue.

Embodiments of the invention

[0030] The embodiments of the present application are described in detail below with reference to the accompanying drawings:

[0031] The present application provides an aircraft, such as a multi-rotor aircraft (not shown) that includes a propeller and a fuselage. [0032] As shown in FIG. 1, a propeller includes a molding foam 10, at least one first fiber fabric layer 20 disposed on the upper surface of the molding foam 10, and at least one layer disposed on the lower surface of the molding foam 10. The two fabric layers 30, the first fibrous web layer 20 and the second fibrous web layer 30 are each impregnated with a first colloid 40 that matches the shape of the propeller.

[0033] As shown in FIG. 1, the first fiber fabric layer 20 and the second fiber fabric layer 30 in this embodiment are each provided with only one layer, and the first colloid 40 is an epoxy resin, and the first fiber fabric layer 20 and the first The two-fiber fabric layer 30 is a carbon fiber fabric, and the first colloid 40, the first fabric layer 20, and the second fabric layer 30 may also be otherwise provided according to actual conditions.

[0034] Further, as shown in FIG. 1, the edges of the first fiber fabric layer 20, the molding foam 10, and the second fiber fabric layer 30 are bonded with a mold clamping glue 60, and the edge adhesive is improved by the film adhesive. Fit, easy to screw the mold. By impregnating the first fabric 40 with the first fabric layer 20 and the second fabric layer 30 to achieve adhesion between the fabric layer and the molding foam and curing of the fabric, the first colloid 40 can also be set to other colloids according to actual conditions. .

[0035] As shown in FIG. 2, in another embodiment, at least one layer of UD cloth is disposed between the first fiber fabric layer 20 and the molding foam 10, between the second fiber fabric layer 30 and the molding foam 10. 50. The UD fabric layer 50 is impregnated with the first colloid 40. The UD material used in the UD fabric layer 50 is also referred to as an organic fiber composite material, and the material has a full strength in a first direction, between the first fiber fabric layer 20 and the molding foam 10, and the second fiber fabric. UD material is disposed between the layer 30 and the molded foam 10 to increase the strength of the propeller and to be light in weight, so that the overall characteristics of the propeller are better.

[0036] Further, as shown in FIG. 2, in another embodiment, the first fiber fabric layer 20 has two layers, the second fiber fabric layer 30 has two layers, the first fiber fabric layer 20 and the molding foam 10 A UD fabric layer 50 is disposed between the second fabric layer 30 and the molding foam 10, and a first UD fabric layer 510 is disposed on the bottom surface of the first fabric layer 20, and the first UD fabric is disposed. A second UD fabric layer 520 is disposed on the bottom surface of the layer 510, and a third UD fabric layer 530 is disposed on the bottom surface of the second UD fabric layer 520. The bottom surface of the third UD fabric layer 530 is adhered to the upper surface of the molding foam 10. The length of the first UD fabric layer is greater than the length of the second UD fabric layer, and the length of the second UD fabric layer is greater than the length of the third UD fabric layer. A second UD fabric layer 510 is disposed on the bottom surface of the second woven fabric layer 30, a second UD fabric layer 520 is disposed on the bottom surface of the first UD fabric layer 510, and a third UD is disposed on the bottom surface of the second UD fabric layer 520. a layer 530, the bottom surface of the third UD layer 530 is bonded to the layer The upper surface of the foam 10, the length of the first UD fabric layer is greater than the length of the second UD fabric layer, and the length of the second UD fabric layer is greater than the length of the third UD fabric layer. The center of the length of the first UD fabric layer 510, the second UD fabric layer 520, and the third UD fabric layer 530 overlaps with the center of the length of the propeller. The length of the three-layer UD fabric layer 50 gradually decreases toward the center of the propeller. Further, the length of the first UD fabric layer is 1/3 longer than the length of the second UD fabric layer, and the length of the second UD fabric layer is longer than the third UD fabric layer. The length is 1/3 longer, and the strength of the propeller is increased, which does not affect the weight of the propeller too much.

[0037] The propeller tightly bonds the first fiber fabric layer 20, the UD cloth layer 50, the molding foam 10, and the second fiber fabric layer 30 in a manner in which the crucible is formed by a stamper, and since the foam is elastic, the first The fiber fabric layer 20 and the second fiber fabric layer 30 are bonded to form an interference fit between the cavity and the molded foam 10, that is, the thickness of the molded foam 10 is larger than the thickness of the cavity, so that the propeller is molded and formed by compression molding. The foam 10 further increases the strength toughness of the paddle.

[0038] As shown in FIG. 3, the present application further provides a fuselage comprising a molding foam 10, at least one first fiber fabric layer 20 disposed on the upper surface of the molding foam 10, and a lower surface of the molding foam 10. At least one layer of the second fibrous web 30, the first fibrous web layer 20 and the second fibrous web layer 30 are each impregnated with a first colloid 40 that matches the contour of the fuselage.

[0039] Further, the first colloid 40 is an epoxy resin, and the first fabric layer 20 and the second fabric layer 30 are carbon fiber fabrics, a first colloid 40, a first fabric layer 20, and a second fabric layer. 30 can also be set to other forms according to the actual settings.

[0040] As shown in FIG. 3, the first fiber fabric layer 20 in this embodiment has two layers, the second fiber fabric layer 30 has one layer, and two layers of the first fiber fabric layer 20 are located on the outer side of the body, one layer. The second fabric layer 30 is located on the inside of the fuselage to make the fuselage more stable during operation.

[0041] Further, the edges of the first fiber fabric layer 20, the molding foam 10, and the second fiber fabric layer 30 are bonded with a mold clamping glue 60, and the adhesion of the edge is improved by the film glue, which facilitates the screw clamping. . In the present embodiment, the mold clamping compound 60 contains epoxy resin and carbon powder, and the adhesion is improved by the carbon powder.

[0042] As shown in FIG. 4, in other embodiments, at least one UD layer 50 is disposed between the first fibrous web layer 20 and the molded foam 10, between the second fibrous web layer 30 and the molded foam 10. The UD fabric layer 50 is impregnated with the first colloid 40. The UD material used in the UD fabric layer 50 is also referred to as an organic fiber composite material, and the material has a full strength in a first direction, between the first fiber fabric layer 20 and the molding foam 10, and second. The UD material is disposed between the fiber fabric layer 30 and the molding foam 10, which increases the strength of the body and is light in weight, so that the overall characteristics of the body are better.

As shown in FIG. 4, a three-layer UD fabric layer 50 is disposed between the first fabric layer 20 and the molding foam 10, between the second fabric layer 30, and the molding foam 10. A first UD fabric layer 510 is disposed on the bottom surface of the first woven fabric layer 20, a second UD fabric layer 520 is disposed on the bottom surface of the first UD fabric layer 510, and a third surface is disposed on the bottom surface of the second UD fabric layer 52 0. a UD fabric layer 530, a bottom surface of the third UD fabric layer 530 is adhered to the upper surface of the molding foam 10, a length of the first UD fabric layer is greater than a length of the second UD fabric layer, and the second UD The length of the layer is greater than the length of the third UD layer. The bottom surface of the second woven fabric layer 510 is provided with a first DF fabric layer 510, and a second UD fabric layer 520 is disposed on the bottom surface of the first UD fabric layer 510. a bottom layer 530, the bottom surface of the third UD fabric layer 530 is adhered to the upper surface of the molding foam 10, the length of the first UD fabric layer is greater than the length of the second UD fabric layer, and the second UD fabric The length of the layer is greater than the length of the third UD fabric layer. The length of the three-layer UD fabric layer 50 gradually decreases toward the center of the fuselage, increasing the strength of the fuselage, and does not affect the weight of the propeller too much.

[0044] The fuselage is fabricated, and the first fiber fabric layer 20, the UD cloth layer 50, the molding foam 10, and the second fiber fabric layer 30 are bonded by the first colloid 40, and the first fiber is vacuumed. The fabric layer 20, the UD fabric layer 50, the molded foam 10, and the second fabric layer 30 are bonded.

[0045] The utility model has the beneficial effects that the propeller and the molded foam 10 of the fuselage are made of foam material, and the foam is light, which can greatly reduce the weight of the propeller and the fuselage, and the endurance of the drone is stronger, and the elastic property of the foam is further improved. The strength and toughness of the paddle may be increased; and the first fiber fabric layer 20 and the second fiber fabric layer 30 are both impregnated with the first colloid 40, and the first colloid 40 solidifies and hardens the first fiber fabric layer 20 and the second fiber fabric layer 30. More easily formed; plus a three-layer UD fabric layer 50 is provided between the first fiber fabric layer 20 and the molding foam 10, between the second fiber fabric layer 30 and the molding foam 10, and the entire strength of the UD fabric layer 50 is In the first direction, the strength of the propeller and the fuselage is increased, and the length of the UD fabric layer 50 bonded to the fiber fabric layer is the longest, and the length of the UD fabric layer 50 bonded to the molded foam 10 is the shortest, and the propeller and the fuselage are increased. The strength of the peers will not affect the weight of the propeller and the fuselage too much, making the overall characteristics of the propeller and the fuselage better.

[0046] The technical features of the above-described embodiments may be combined in any combination. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of these technical features is not There are contradictions and should be considered as the scope of this manual. The above-mentioned embodiments are merely illustrative of several embodiments of the present application, and the description thereof is not to be construed as limiting the scope of the application. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the scope of the present application, which are all within the scope of the present application. Therefore, the scope of the invention should be determined by the appended claims. .

Claims

Claim

A propeller, comprising: a molding foam, at least one first fiber fabric layer disposed on an upper surface of the molding foam, and at least one second fiber fabric layer disposed on a lower surface of the molding foam, The first fibrous fabric layer and the second fibrous fabric layer are both impregnated with a first colloid.

The propeller according to claim 1, wherein a cavity is formed between the first fiber fabric layer and the second fiber fabric layer, and the molding foam is disposed in the cavity according to claim 2. The propeller is characterized in that the thickness of the molding foam is greater than the thickness of the cavity, and the molding foam has an interference fit with the cavity.

The propeller according to claim 3, wherein the propeller includes a UD fabric layer, at least one UD fabric layer is disposed between the first fiber fabric layer and the molding foam, and/or the At least one UD fabric layer is disposed between the two fiber fabric layers and the molding foam, wherein the UD fabric layer is impregnated with the first colloid.

The propeller according to claim 4, wherein the propeller comprises two layers of the first fabric layer, or/and the propeller comprises two layers of the second fabric layer according to claim 4 or 5. The propeller is characterized in that the propeller comprises three layers of the UD fabric layer, and the first fiber fabric layer and the molding foam are provided with three layers of the UD fabric layer, and/or the second fiber. Three layers of the UD fabric layer are provided between the fabric layer and the shaped foam.

The propeller according to claim 6, wherein a first UD fabric layer is disposed on a bottom surface of the first fabric layer, and a second UD fabric layer is disposed on a bottom surface of the first UD fabric layer, the second UD a bottom surface of the fabric layer is provided with a third UD fabric layer, and a bottom surface of the third UD fabric layer is adhered to the upper surface of the molding foam, and a length of the first UD fabric layer is greater than a length of the second UD fabric layer. The length of the second UD fabric layer is greater than the length of the third UD fabric layer. The propeller according to claim 7, wherein a center of a length of the first UD fabric layer, the second UD fabric layer, and the third UD fabric layer overlaps with a center of a length of the propeller. The propeller according to any one of claims 1 to 8, wherein the first fabric layer and the second fabric layer are carbon fiber fabrics.

The propeller according to any one of claims 1 to 9, wherein the first colloid is an epoxy resin.

A fuselage, comprising: a molding foam, at least one first fiber fabric layer disposed on an upper surface of the molding foam, and at least one second fiber fabric layer disposed on a lower surface of the molding foam The first fabric layer and the second fabric layer are both impregnated with a first colloid.

The body according to claim 11, wherein the body comprises two layers of said first fiber fabric layer, and/or the body comprises two layers of said second fiber fabric layer.

The airframe according to claim 12, wherein the body comprises a UD fabric layer, and at least one UD fabric layer is disposed between the first fiber fabric layer and the molding foam, and/or At least one UD fabric layer is disposed between the second fiber fabric layer and the molding foam, wherein the UD fabric layer is impregnated with the first colloid.

The airframe according to claim 13, wherein the fuselage comprises three layers of the UD fabric layer, and the first woven fabric layer and the molding foam are provided with three layers of the UD fabric layer. There are three layers of the UD fabric layer between the second fiber fabric layer and the forming foam.

The fuselage according to claim 14, wherein a first UD fabric layer is disposed on a bottom surface of the first fabric layer, a second UD fabric layer is disposed on a bottom surface of the first UD fabric layer, and the second a bottom surface of the UD fabric layer is provided with a third UD fabric layer, and a bottom surface of the third UD fabric layer is adhered to the upper surface of the molding foam, and a length of the first UD fabric layer is greater than a length of the second UD fabric layer. The length of the second UD fabric layer is greater than the length of the third UD fabric layer. The airframe according to any one of claims 11 to 15, wherein the fiber fabric layer and the second fiber fabric layer are carbon fiber fabrics.

The body according to any one of claims 11 to 16, wherein the first colloid is an epoxy resin.

The body according to any one of claims 11 to 17, wherein the first fiber Bonding the fabric layer, the UD fabric layer, the molding foam, and the second fiber fabric layer, and vacuuming the first fiber fabric layer, the UD fabric layer, the molding foam, And bonding between the second fibrous fabric layers.