Main landing gear tire fairing for light sport aircraft and method of assembly thereof

Abstract

The application discloses a main take-off tire fairing for a light sport aircraft and an assembling method thereof, and belongs to the technical field of light sport aircrafts. The two ends of the wheel shaft of the main take-off tire are connected with one fairing connecting corner piece through connecting bolts respectively, the inner end of the wheel shaft and the fairing connecting corner piece on the same side are further fixedly connected with a main take-off plate spring through connecting bolts, and the main take-off plate spring is integrally connected with the wheel shaft and the fairing connecting corner piece through original connecting holes used for connecting the wheel shaft; a supporting plate nut is fixedly installed on each fairing connecting corner piece, and a tire fairing sleeved outside the main take-off tire is fixedly connected with the supporting plate nut through connecting bolts, so that the tire fairing is assembled outside the main take-off tire through the fairing connecting corner piece. The application solves the problem that the light sport aircraft provided with the main take-off tire fairing has the risk of fatigue fracture at the connecting position, because the fairing is directly connected with the main landing gear through punching, and the strength of the main landing gear is reduced.

Description

Technical Field

[0001] This invention relates to, but is not limited to, the field of structural configuration technology, and particularly to a main landing gear fairing for a light sport aircraft and its assembly method. Background Technology

[0002] The primary mode of use for light sport aircraft is with the landing gear not retracted. Some models do not have tire fairings, while others do.

[0003] Light sport aircraft without main landing gear tire fairings experience increased drag during flight. Furthermore, when parked at airfields, prolonged exposure to sunlight, wind, and rain accelerates tire aging. Light sport aircraft with main landing gear tire fairings use a direct drilling connection between the fairing and the main landing gear. This method reduces the local strength of the main landing gear and poses a risk of fatigue fracture at the connection point. Summary of the Invention

[0004] The purpose of this invention is to provide a main landing gear fairing for a light sport aircraft and its assembly method, so as to solve the problem that in existing light sport aircraft with main landing gear fairings, the fairing is directly connected to the main landing gear through holes, which reduces the strength of the main landing gear and poses a risk of fatigue fracture at the connection point.

[0005] The technical solution of the present invention is as follows: In a first aspect, the present invention provides a main landing tire fairing for a light sport aircraft, comprising: a main landing leaf spring 1, a tire fairing 2, a fairing connecting corner piece, a wheel axle 7, connecting bolts and a support plate nut 10; Among them, the two ends of the axle 7 of the main starter tire are respectively connected to a fairing connecting plate by connecting bolts. The inner end of the axle 7 and the fairing connecting plate on the same side are also fixedly connected to the main starter leaf spring 1 by connecting bolts. The main starter leaf spring 1 uses the original connecting hole for connecting the axle 7 to achieve the overall connection with the axle 7 and the fairing connecting plate. Each fairing connecting corner piece is fixedly installed with a support plate nut 10, and the tire fairing 2, which is sleeved on the outside of the main starter tire, is fixedly connected to the support plate nut 10 by connecting bolts, so as to realize the assembly of the tire fairing 2 on the outside of the main starter tire through the fairing connecting corner pieces.

[0006] Optionally, in the main landing gear fairing for a light sport aircraft as described above, the fairing connecting tabs include: an outer connecting tab 3 and an inner connecting tab 4. Among them, the outer end of the axle 7 of the main tire is connected to the connecting plate protruding in the middle of the outer connecting corner piece 3 by the second connecting bolt 6; The inner end of the axle 7 of the main lifting tire is provided with a plate-shaped mounting seat. The plate-shaped mounting seat of the axle 7, the original connecting hole on the main lifting leaf spring 1, and the corresponding connecting hole on the connecting plate in the middle of the inner connecting corner piece 4 are connected in sequence by the third connecting bolt 8 to fix the axle 7, the main lifting leaf spring 1 and the inner connecting corner piece 4 into an integral structure.

[0007] Optionally, as described above, for use in the main landing gear fairing of a light sport aircraft. The outer connecting corner piece 3 is configured as a U-shaped connecting structure with extended mounting plates at both ends, and the two sides of the U-shape are inclined outward to form a trapezoidal cross section. The mounting plates at both ends are respectively equipped with support plate nuts 10, and the middle connecting plate is used to fix and connect with the wheel axle 7.

[0008] Optionally, as described above, for use in the main landing gear fairing of a light sport aircraft. The inner connecting corner piece 4 is configured as a four-corner plate connecting structure, with mounting plates formed at the four corners. The two vertical mounting plates are connected into a U-shaped support corner structure by a U-shaped connecting frame. The U-shaped protrusions of the two sets of U-shaped support corner structures are connected into a four-corner plate connecting structure by a central connecting plate.

[0009] Optionally, the main landing gear fairing for a light sport aircraft, as described above, also includes: connecting rivets 9; The mounting plate inside each fairing connecting corner piece, which is used to connect with the tire fairing 2, is fixed with a mounting plate nut 10 by connecting rivets 9.

[0010] Optionally, as described above, for use in the main landing gear fairing of a light sport aircraft. Each fairing connecting corner piece is made of metal sheet metal. Before installing the tire fairing 2, the two ends of each support plate nut 10 are fixed on the fairing connecting corner piece using connecting rivets 9.

[0011] Optionally, as described above, for use in the main landing gear fairing of a light sport aircraft. Each plate nut 10 has a connecting post with a threaded hole in the middle of its inner side, which is used to fix it to the tire fairing 2 with the first connecting bolt 5.

[0012] Secondly, the present invention also provides an assembly method for a main landing tire fairing for a light sport aircraft, the assembly method being the assembly process for a main landing tire fairing for a light sport aircraft as described in any of the preceding claims, wherein the fairing connecting tabs include an outer connecting tab 3 and an inner connecting tab 4, and the assembly method includes: Step 1: Use connecting rivets 9 to rivet the plate nut 10 to the inner side of the outer connecting corner piece 3 and the inner connecting corner piece 4; Step 2, assembling the main lifting tire and main lifting leaf spring 1: During the assembly process, the inner end of the wheel axle 7, the main lifting leaf spring 1 and the inner connecting angle plate 4 are connected into a single structure using the third connecting bolt 8, and the inner connecting angle plate 4 is installed inside the main lifting leaf spring 1; the main lifting tire is then mounted on the wheel axle 7; Step 3: Use the second connecting bolt 6 to fix the outer connecting corner piece 3 to the outer end of the wheel axle 7; Step 4: Use the first connecting bolt 5 to fix the plate nuts 10 on the outer connecting corner piece 3 and the inner connecting corner piece 4 to the corresponding positions of the tire fairing 2, thereby completing the assembly of the tire fairing 2 and the main lifting leaf spring 1.

[0013] Optionally, in the assembly method for the main landing gear fairing of a light sport aircraft as described above, the inner connecting corner piece 4 is configured as in claim 4, and in step 2, The inner connecting corner piece 4 is fixedly installed with the main leaf spring 1 and the wheel axle 7 through its central connecting plate; after the inner connecting corner piece 4 is installed, the mounting plates at its four corners form four corner support frames facing the inner wall of the tire fairing 2 through the corresponding U-shaped connecting frames.

[0014] Optionally, in the assembly method for the main landing gear fairing of a light sport aircraft as described above, the outer connecting corner piece 3 is configured as in claim 3, and in step 3, The outer connecting corner piece 3 is fixedly installed at the outer end of the wheel axle 7 through the middle connecting plate of its U-shaped connecting structure; the installed outer connecting corner piece 3 has two corner support frames facing the inner wall of the outer side of the tire fairing 2 based on its U-shaped connecting structure.

[0015] The beneficial effects of this invention are as follows: This invention provides a main landing gear fairing for a light sport aircraft and its assembly method. By designing the connection form of the transition connectors (including outer connecting corner pieces 3 and inner connecting corner pieces 4), it provides a connection structure between the main landing gear leaf spring and the tire fairing for a light sport aircraft that has good safety performance, high structural efficiency, and low manufacturing and assembly costs. The main landing gear fairing and its assembly method provided by this invention have the following beneficial effects: First, by installing tire fairings on the main landing gear tires, the drag of the aircraft landing gear tires during flight is reduced, and the tire life is extended. Secondly, in the installation structure provided by the present invention, the connection between the tire fairing 2 and the main landing spring 1 is achieved by means of the connection hole on the original structure of the wheel axle 7 and the main landing spring 1, without the need to make additional holes, thus not reducing the strength of the main landing spring 1 itself, and preserving the stability of the original structure of the main landing spring 1. Moreover, the installation structure of the main landing spring 1 in the present invention is simple, easy to disassemble and assemble, and has high safety; it significantly improves the structural safety of the aircraft during takeoff and landing. Third, compared to the existing connection structure between the main landing spring and the tire fairing of light sport aircraft, the weight is reduced by about 8%. Because the existing fairing on the main landing tire is connected by drilling holes in the main landing spring and using a connecting structure, drilling holes in the main landing spring will damage the structure of the main landing gear, causing certain structural damage and reducing the structural strength of the main landing gear. Based on this factor, the main landing gear needs to be reinforced, which will lead to an increase in structural weight. In addition, the existing connection structure used to connect the fairing also leads to an increase in structural weight. In this invention, a transition component with a simple connection structure and light weight is designed based on the connection holes on the original structure of the wheel axle 7 and the main landing spring 1.

[0016] In summary, this invention provides a structurally efficient and cost-effective assembly structure for the main landing spring and tire fairing of a light sport aircraft. Compared to other light sport aircraft, it can significantly reduce tire drag during flight, improve the structural safety of the main landing gear, reduce the weight of the main landing fairing assembly structure, and greatly improve the safety of the aircraft. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of a main landing gear fairing for a light sport aircraft, provided by an embodiment of the present invention. Figure 2 for Figure 1 A schematic diagram from another perspective of the main landing gear fairing for a light sport aircraft provided in the illustrated embodiment; Figure 3 for Figure 1 The illustrated embodiment provides a structural schematic diagram of the main landing tire fairing for a light sport aircraft before the tire fairing is installed. Figure 4 for Figure 1 The illustrated embodiment provides a structural schematic diagram of the outer connecting corner piece in the main landing gear fairing for a light sport aircraft. Figure 5 for Figure 1 The illustrated embodiment provides a structural schematic diagram of the inner connecting corner piece in the main landing gear fairing for a light sport aircraft. Figure 6 This is a schematic diagram illustrating the installation of the main landing gear tire using the main landing gear fairing for a light sport aircraft provided in an embodiment of the present invention. Figure 6 Figure a shows the installation structure of the outer connecting corner piece, and Figure b shows the installation structure of the inner connecting corner piece and the main leaf spring.

[0019] Explanation of reference numerals in the attached figures: 1. Main leaf spring, 2. Tire fairing, 3. Outer connecting angle plate, 4. Inner connecting angle plate, 5. First connecting bolt, 6. Second connecting bolt, 7. Wheel axle, 8. Third connecting bolt, 9. Connecting rivet, 10. Support plate nut. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0021] As explained in the background section, the main landing gear (MLT) fairing in light sport aircraft serves to reduce tire drag during flight and protect against tire aging during parking. However, current structures that install fairings on the MLTs suffer from reduced MLT strength and a risk of fatigue fracture at the connection point due to the direct connection between the fairing and the main landing gear via perforations. Specifically, existing MLT fairings are constructed by drilling holes in the MLT leaf springs and using a connecting structure to connect the fairing. Drilling these holes in the leaf springs damages the main landing gear structure, reducing its structural strength. This necessitates reinforcement of the main landing gear, leading to increased structural weight. Furthermore, the connecting structure used to attach the fairing also contributes to the increased structural weight.

[0022] To address the issues of high tire drag, tire aging, and the risk of main landing gear breakage during takeoff and landing associated with the leaf spring-type main landing gear structure of light sport aircraft, this invention provides a main landing gear fairing for light sport aircraft and a redesigned connection structure between the main landing gear leaf spring and the fairing. Currently, no prior published examples of this design for the connection structure between the main landing gear leaf spring and the main landing gear fairing for light sport aircraft have been found.

[0023] The present invention provides the following specific embodiments, which can be combined with each other. For the same or similar concepts or processes, they may not be described again in some embodiments.

[0024] Figure 1 This invention provides a structural schematic diagram of a main landing gear fairing for a light sport aircraft. (See diagram below.) Figure 1 As shown, the main landing tire fairing for a light sport aircraft provided by the present invention comprises: a main landing leaf spring 1, a tire fairing 2, a fairing connecting corner piece, a wheel axle 7, connecting bolts, and a support plate nut 10.

[0025] like Figures 1 to 3As shown, in this embodiment of the invention, the two ends of the axle 7 of the main starter tire are respectively connected to a fairing connecting plate by connecting bolts. The inner end of the axle 7 and the fairing connecting plate on the same side are also fixedly connected by connecting bolts to the main starter leaf spring 1. The main starter leaf spring 1 uses the original connecting hole for connecting the axle 7 to achieve an overall connection with the axle 7 and the fairing connecting plate.

[0026] In this embodiment of the invention, each fairing connecting corner piece is fixedly installed with a support plate nut 10, and the tire fairing 2, which is sleeved on the outside of the main starter tire, is fixedly connected to the support plate nut 10 by connecting bolts, so as to realize the assembly of the tire fairing 2 on the outside of the main starter tire through the fairing connecting corner piece.

[0027] In one implementation of this invention, the fairing connecting corner piece includes: an outer connecting corner piece 3 and an inner connecting corner piece 4.

[0028] In this implementation, a plate-shaped mounting seat is provided on the inner end of the axle 7 of the main lifting tire. The plate-shaped mounting seat of the axle 7, the original connecting hole on the main lifting leaf spring 1, and the corresponding connecting hole on the connecting plate in the middle of the inner connecting corner piece 4 are connected in sequence by the third connecting bolt 8 to fix the axle 7, the main lifting leaf spring 1 and the inner connecting corner piece 4 into an integral structure.

[0029] Based on the connection form between the main lifting leaf spring 1 and the inner connecting corner piece 4 in this implementation method, the existing openings in the wheel axle 7 and the main lifting leaf spring 1 are used, eliminating the need to re-drill holes and ensuring the stability of the original structure of the main lifting leaf spring 1 without causing additional structural damage; therefore, there is no need to reinforce the main lifting leaf spring 1.

[0030] In one implementation of this invention, a structural form for the outer connecting corner piece 3 is provided, such as... Figure 4 As shown, the outer connecting corner piece 3 is configured as a U-shaped connecting structure with extended mounting plates at both ends, and the two sides of the U-shape are inclined outward to form a trapezoidal cross section. The mounting plates at both ends are respectively equipped with support plate nuts 10, and the middle connecting plate is used to fix and connect with the wheel axle 7.

[0031] In one implementation of this invention, a structural form for the inner connecting corner piece 4 is provided, such as... Figure 5 As shown, the inner connecting corner piece 4 is set as a four-corner plate connecting structure, with mounting plates formed at the four corners. The two vertical mounting plates are connected into a U-shaped support corner structure by a U-shaped connecting frame. The U-shaped protrusions of the two sets of U-shaped support corner structures are connected into a four-corner plate connecting structure by a middle connecting plate.

[0032] In one implementation of this invention, such as Figures 1 to 3As shown, the main tire fairing also includes a connecting rivet 9. In this implementation, the inner side of the mounting plate in each fairing connecting corner piece, which is used to connect with the tire fairing 2, is specifically fixed with a mounting plate nut 10 using the connecting rivet 9.

[0033] In the specific implementation plan, each fairing connecting corner piece is set as a metal sheet metal part. Before installing the tire fairing 2, the two ends of each support plate nut 10 are fixed on the fairing connecting corner piece by connecting rivets 9.

[0034] In the specific implementation plan, each pallet nut 10 has a connecting post with a threaded hole in the middle of its inner side, which is used to fix it to the tire fairing 2 with the first connecting bolt 5.

[0035] Based on the main landing gear fairing for a light sport aircraft provided in the embodiments of the present invention, the embodiments of the present invention also provide an assembly process for the main landing gear fairing provided in the above embodiments, referring to... Figures 1 to 6 As shown, the assembly method provided in this embodiment of the invention includes: Step 1: Use connecting rivets 9 to rivet the plate nut 10 to the inside of the outer connecting corner piece 3 and the inner connecting corner piece 4; that is, complete the preparation work before installing the outer connecting corner piece 3 and the inner connecting corner piece 4. Step 2, assembling the main lifting tire and main lifting leaf spring 1: During the assembly process, the inner end of the wheel axle 7, the main lifting leaf spring 1 and the inner connecting angle plate 4 are connected into a single structure using the third connecting bolt 8, and the inner connecting angle plate 4 is installed inside the main lifting leaf spring 1; the main lifting tire is then mounted on the wheel axle 7; Step 3: Use the second connecting bolt 6 to fix the outer connecting corner piece 3 to the outer end of the wheel axle 7; Step 4: Use the first connecting bolt 5 to fix the plate nuts 10 on the outer connecting corner piece 3 and the inner connecting corner piece 4 to the corresponding positions of the tire fairing 2, thereby completing the assembly of the tire fairing 2 and the main lifting leaf spring 1.

[0036] It should be noted that the main starter tire fairing and its assembly method provided by the present invention do not directly install the main starter leaf spring 1 to the tire fairing 2, thus avoiding the addition of connecting holes on the main starter leaf spring 1. Instead, existing holes are used to fix the connection with the transition piece (fairing connecting corner piece).

[0037] In one implementation of this invention, the inner connecting corner piece 4 is configured as follows: Figure 5 The structural form shown above, in step 2, The inner connecting corner piece 4 is fixedly installed with the main leaf spring 1 and the wheel axle 7 through its central connecting plate; after the inner connecting corner piece 4 is installed, the mounting plates at its four corners form four corner support frames facing the inner wall of the tire fairing 2 through the corresponding U-shaped connecting frames.

[0038] It should be noted that the following is adopted: Figure 4 The inner connecting corner piece 4 shown in the diagram, after the upper plate nut 10 and the tire fairing 2 are fixedly connected by the first connecting bolt 5, provides a certain elastic deformation space through the U-shaped connecting frame structure of the inner connecting corner piece 4.

[0039] In one implementation of this invention, the outer connecting corner piece 3 is configured as follows: Figure 4 The structural form shown above, in step 3, The outer connecting corner piece 3 is fixedly installed at the outer end of the wheel axle 7 through the middle connecting plate of its U-shaped connecting structure; the installed outer connecting corner piece 3 has two corner support frames facing the inner wall of the outer side of the tire fairing 2 based on its U-shaped connecting structure.

[0040] It should be noted that the following is adopted: Figure 5 The outer connecting corner piece 3 of the structure shown is fixedly connected to the upper plate nut 10 and the tire fairing 2 by the first connecting bolt 5, and then a certain elastic deformation space is provided by the U-shaped connecting structure of the outer connecting corner piece 3.

[0041] The main landing gear fairing and its assembly method for a light sport aircraft provided in this invention, through the design of a transition connector (including an outer connecting plate 3 and an inner connecting plate 4), provides a connection structure between the main landing gear leaf spring and the tire fairing for a light sport aircraft that offers good safety performance, high structural efficiency, and low manufacturing and assembly costs. The main landing gear fairing and its assembly method provided by this invention have the following beneficial effects: First, by installing tire fairings on the main landing gear tires, the drag of the aircraft landing gear tires during flight is reduced, and the tire life is extended. Secondly, in the installation structure provided by the present invention, the connection between the tire fairing 2 and the main landing spring 1 is achieved by means of the connection hole on the original structure of the wheel axle 7 and the main landing spring 1, without the need to make additional holes, thus not reducing the strength of the main landing spring 1 itself, and preserving the stability of the original structure of the main landing spring 1. Moreover, the installation structure of the main landing spring 1 in the present invention is simple, easy to disassemble and assemble, and has high safety; it significantly improves the structural safety of the aircraft during takeoff and landing. Third, compared to the existing connection structure between the main landing spring and the tire fairing of light sport aircraft, the weight is reduced by about 8%. Because the existing fairing on the main landing tire is connected by drilling holes in the main landing spring and using a connecting structure, drilling holes in the main landing spring will damage the structure of the main landing gear, causing certain structural damage and reducing the structural strength of the main landing gear. Based on this factor, the main landing gear needs to be reinforced, which will lead to an increase in structural weight. In addition, the existing connection structure used to connect the fairing also leads to an increase in structural weight. In this invention, a transition component with a simple connection structure and light weight is designed based on the connection holes on the original structure of the wheel axle 7 and the main landing spring 1.

[0042] In summary, this invention provides a structurally efficient and cost-effective assembly structure for the main landing spring and tire fairing of a light sport aircraft. Compared to other light sport aircraft, it can significantly reduce tire drag during flight, improve the structural safety of the main landing gear, reduce the weight of the main landing fairing assembly structure, and greatly improve the safety of the aircraft.

[0043] The following examples illustrate the implementation of the main landing gear fairing for a light sport aircraft and its assembly method provided by the present invention.

[0044] Implementation Example This embodiment provides a main landing gear fairing for a light sport aircraft, the structure of which is as follows: Figures 1 to 6 As shown, this main landing tire fairing is applied to a light sport aircraft with a main landing leaf spring structure. By designing transition connecting parts, a main landing leaf spring and fairing assembly structure for a light sport aircraft with good safety performance, high structural efficiency, and low manufacturing and assembly costs is formed. The components of this structure include: main landing leaf spring 1, tire fairing 2, outer connecting corner piece 3, inner connecting corner piece 4, first connecting bolt 5 for connecting tire fairing 2 to each fairing connecting corner piece, second connecting bolt 6 for connecting outer connecting corner piece 3 to wheel axle 7, wheel axle 7, third connecting bolt 8 for connecting wheel axle 7 to main landing leaf spring 1 and inner connecting corner piece 2, connecting rivet 9 for connecting support plate nut 10 to each fairing connecting corner piece, and support plate nut 10.

[0045] The mounting structure of each component described above in this embodiment has been detailed in the previous embodiments. The assembly method of the main starter tire fairing described above in this embodiment includes the following steps: Step 1: Use connecting rivets 9 to rivet the plate nut 10 to the inside of the outer connecting corner piece 3 and the inner connecting corner piece 4; complete the preparation work before installing the outer connecting corner piece 3 and the inner connecting corner piece 4.

[0046] Step 2, assembling the main lifting tire and main lifting leaf spring 1: During the assembly process, the inner end of the wheel axle 7, the main lifting leaf spring 1 and the inner connecting angle plate 4 are connected into a single structure using the third connecting bolt 8, and the inner connecting angle plate 4 is installed inside the main lifting leaf spring 1; the main lifting tire is then mounted on the wheel axle 7; In this step, the inner connecting corner piece 4 is fixedly installed with the main leaf spring 1 and the wheel axle 7 through its central connecting plate; after the inner connecting corner piece 4 is installed, the mounting plates at its four corners form four corner support frames facing the inner wall of the tire fairing 2 through the corresponding U-shaped connecting frames.

[0047] Step 3: Use the second connecting bolt 6 to fix the outer connecting corner piece 3 to the outer end of the wheel axle 7; In this step, the outer connecting corner piece 3 is fixedly installed at the outer end of the wheel axle 7 of the middle connecting plate of its U-shaped connecting structure; the outer connecting corner piece 3 after installation has two corner support frames facing the inner wall of the outer side of the tire fairing 2 based on its U-shaped connecting structure.

[0048] Step 4: Use the first connecting bolt 5 to fix the plate nuts 10 on the outer connecting corner piece 3 and the inner connecting corner piece 4 to the corresponding positions of the tire fairing 2, thereby completing the assembly of the tire fairing 2 and the main lifting leaf spring 1.

[0049] While the embodiments disclosed in this invention are as described above, they are merely illustrative of the embodiments to facilitate understanding of the invention and are not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and variations in the form and details of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection for this invention shall still be determined by the scope defined in the appended claims.

Claims

1. A main landing gear fairing for a light sport aircraft, characterized in that, include: Main lifting leaf spring (1), tire fairing (2), fairing connecting corner plate, wheel axle (7), connecting bolt and support plate nut (10); Among them, the two ends of the axle (7) of the main starter tire are respectively connected to a fairing connecting plate by connecting bolts. The inner end of the axle (7) and the fairing connecting plate on the same side are also fixedly connected by connecting bolts to the main starter leaf spring (1). The main starter leaf spring (1) uses the original connecting hole used to connect the axle (7) to achieve the overall connection with the axle (7) and the fairing connecting plate. Each fairing connecting corner piece is fixedly installed with a support plate nut (10), and the tire fairing (2) sleeved on the outside of the main starter tire is fixedly connected with the support plate nut (10) by connecting bolts, so as to realize the assembly of the tire fairing (2) on the outside of the main starter tire through the fairing connecting corner piece.

2. The main landing gear fairing for a light sport aircraft according to claim 1, characterized in that, The fairing connecting corner pieces include: an outer connecting corner piece (3) and an inner connecting corner piece (4). Among them, the outer end of the axle (7) of the main tire is connected to the connecting plate protruding in the middle of the outer connecting corner piece (3) by the second connecting bolt (6); The inner end of the axle (7) of the main lifting tire is provided with a plate-shaped mounting seat. The plate-shaped mounting seat of the axle (7), the original connecting hole on the main lifting leaf spring (1), and the corresponding connecting hole on the connecting plate in the middle of the inner connecting corner piece (4) are connected in sequence by the third connecting bolt (8) to fix the axle (7), the main lifting leaf spring (1) and the inner connecting corner piece (4) into an integral structure.

3. The main landing gear fairing for a light sport aircraft according to claim 2, characterized in that, The outer connecting corner piece (3) is configured as a U-shaped connecting structure with extended mounting plates at both ends, and the two sides of the U-shape are inclined outward to form a trapezoidal cross section. The mounting plates at both ends are respectively equipped with support plate nuts (10), and the middle connecting plate is used to fix and connect with the wheel axle (7).

4. The main landing gear fairing for a light sport aircraft according to claim 2, characterized in that, The inner connecting corner piece (4) is set as a four-corner plate connecting structure, with mounting plates formed at the four corners. The two vertical mounting plates are connected into a U-shaped support corner structure by a U-shaped connecting frame. The U-shaped protrusions of the two sets of U-shaped support corner structures are connected into a four-corner plate connecting structure by a middle connecting plate.

5. The main landing gear fairing for a light sport aircraft according to any one of claims 1 to 4, characterized in that, Also includes: Connecting rivets (9); The mounting plate inside each fairing connecting corner piece, which is used to connect with the tire fairing (2), is fixed with a mounting plate nut (10) by connecting rivets (9).

6. The main landing gear fairing for a light sport aircraft according to claim 5, characterized in that, Each fairing connecting corner piece is made of metal sheet metal. Before installing the tire fairing (2), the two ends of each support plate nut (10) are fixed on the fairing connecting corner piece by connecting rivets (9).

7. The main landing gear fairing for a light sport aircraft according to claim 5, characterized in that, Each plate nut (10) has a connecting post with a threaded hole in the middle of its inner side, which is used to fix it to the tire fairing (2) with the first connecting bolt (5).

8. A method for assembling the main landing gear fairing for a light sport aircraft, characterized in that, The assembly method is the assembly process for the main landing gear fairing of a light sport aircraft as described in any one of claims 1 to 7, wherein the fairing connecting plates include an outer connecting plate (3) and an inner connecting plate (4), and the assembly method includes: Step 1: Use connecting rivets (9) to rivet the plate nut (10) to the inside of the outer connecting corner piece (3) and the inner connecting corner piece (4); Step 2, assemble the main lifting tire and main lifting leaf spring (1): During the assembly process, the inner end of the wheel axle (7), the main lifting leaf spring (1) and the inner connecting angle plate (4) are connected into a whole structure using the third connecting bolt (8). The inner connecting angle plate (4) is installed on the inner side of the main lifting leaf spring (1); the main lifting tire is mounted on the wheel axle (7); Step 3: Use the second connecting bolt (6) to fix the outer connecting corner piece (3) to the outer end of the wheel axle (7); Step 4: Use the first connecting bolt (5) to fix the plate nuts (10) on the outer connecting corner piece (3) and the inner connecting corner piece (4) to the corresponding positions of the tire fairing (2) to complete the assembly of the tire fairing (2) and the main lifting leaf spring (1).

9. The assembly method for the main landing gear fairing of a light sport aircraft according to claim 8, characterized in that, The inner connecting corner piece (4) is configured as described in claim 4, and in step 2, The inner connecting corner piece (4) is fixedly installed with the main leaf spring (1) and the wheel axle (7) through its middle connecting plate; the inner connecting corner piece (4) after installation, the mounting plates at its four corners form a four-corner support frame facing the inner wall of the tire fairing (2) through the corresponding U-shaped connecting frame.

10. The assembly method for the main landing gear fairing of a light sport aircraft according to claim 8, characterized in that, The outer connecting corner piece (3) is configured as described in claim 3, and in step 3, The outer connecting corner piece (3) is fixedly installed at the outer end of the wheel axle (7) of the middle connecting plate of its U-shaped connecting structure; the outer connecting corner piece (3) after installation has two corner support frames facing the inner wall of the outer side of the tire fairing (2) based on its U-shaped connecting structure.

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