Machine back satellite communication antenna installation platform

Abstract

The invention belongs to the technical field of aviation, and relates to an aircraft back satellite communication antenna installation platform. The mounting platform comprises an antenna mounting seat for mounting a satellite communication antenna, a reinforcing opening frame and an airtight box; the antenna mounting seats are arranged on the outer surfaces of skins of long trusses 53 on the left and right sides of the upper parts of 37-38 frames of the fuselage; the reinforcing opening frame is arranged between the antenna mounting seat and the airtight box and is used for bearing the weight load of the airtight box and the satellite communication antenna; the airtight box is installed on the inner surface of the skin through the reinforcing opening frame to achieve air tightness in the fuselage.

Description

Technical Field

[0001] The invention belongs to the field of aviation technology and relates to an aircraft back satellite communication antenna installation platform. Background Art

[0002] The installation platform of large airborne equipment on the aircraft usually uses the aircraft frame and long stringers to form an installation platform through reinforcing pads and reinforcing ribs. It is only used to install the equipment in airtight areas or non-airtight areas. Under the action of aerodynamic external loads, it is easy to cause vibration to the fixed installation structure at the root. According to the installation requirements of the satellite communication antenna on the back of a certain type of aircraft, an integrated design of the installation platform combined with the sky cover, satellite communication components, etc. is adopted, and a new type of satellite communication antenna installation platform is set up. The installation platform is provided with a reinforced mouth frame outside the fuselage to bear the weight load of the airtight box and the satellite communication antenna, and install the satellite communication antenna; the airtight box is installed on the inner surface of the skin through the reinforced mouth frame to achieve airtightness inside the fuselage, and is divided into upper and lower sections. The upper section is a cylindrical structure to facilitate the rotation of the satellite communication antenna, and the lower section is a square structure to facilitate the installation of satellite component equipment. This structure has the characteristics of high installation strength and light weight. A radome is set above the reinforced mouth frame, which effectively reduces the occurrence of vibration of the fixed installation structure at the root of the optoelectronic turret. Summary of the invention

[0003] Purpose of the invention: The present invention provides a mounting platform for mounting large airborne equipment such as satellite communication antennas on the back of an aircraft, thereby ensuring the installation of satellite communication antennas, while reducing aerodynamic drag, improving the aerodynamic flow field at the back installation position, and optimizing the appearance of the satellite communication antenna cover.

[0004] Technical solution:

[0005] Provided is a back-mounted satellite communication antenna installation platform, comprising: an antenna installation seat for installing the satellite communication antenna, a reinforced opening frame, and an airtight box;

[0006] The antenna mounting seat is arranged on the outer surface of the skin of the long stringer 53 on the left and right sides of the upper part of the fuselage 37~38 frame; the reinforced opening frame is arranged between the antenna mounting seat and the airtight box, which is used to bear the weight load of the airtight box and the satellite communication antenna; the airtight box is installed on the inner surface of the skin through the reinforced opening frame to achieve airtightness inside the fuselage.

[0007] Furthermore, the airtight box is divided into two sections, the upper section is a cylindrical structure, and the lower section is a square structure. The upper section is fixedly connected to the reinforced opening frame.

[0008] Furthermore, the upper and lower sections of the airtight box and the bottom plate of the lower section and the surrounding side walls are designed to be detachably sealed to meet the maintenance requirements.

[0009] Furthermore, compensation sheets are added to strengthen the frame edges 37 and 38 at the front and rear of the airtight box connection area.

[0010] Furthermore, a reinforcing long stringer 53a is added between the long stringers 53 and 54 on the left and right sides, and the front and rear frame reinforcing frame edges 37 and 38 and the reinforcing long stringers 53a on the left and right sides form a tic-tac-toe structure reinforcement layout.

[0011] Furthermore, the diameter of the satellite communication antenna mounting surface of the antenna mounting base is 400 mm.

[0012] Furthermore, the thickness of the antenna mounting base is 1.2 mm.

[0013] Furthermore, the antenna mounting base is an aluminum alloy annular reinforcement pad.

[0014] Beneficial effects:

[0015] 1) It provides a mounting platform for installing large airborne equipment such as satellite communication antennas on the back of the aircraft.

[0016] 2) The airtight box is divided into two sections, the upper section is cylindrical and the lower section is a square structure. The upper section is fixedly connected to the fuselage reinforcement frame. The upper and lower sections and the bottom plate of the lower section and the surrounding side walls are designed to be detachable and sealed to meet the maintenance requirements, which solves the contradiction between airtight and non-airtight installation of satellite communication antennas.

[0017] 3) The integrated design of the installation platform, radome, and satellite communication components ensures the installation of the satellite communication antenna, while reducing aerodynamic resistance, improving the aerodynamic flow field at the back installation position, and optimizing the appearance of the satellite communication radome. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a satellite communication antenna installation platform on the back of an aircraft.

[0019] Among them: 1-antenna mounting base, 2-reinforced mouth frame, 3-upper section of airtight box, 4-lower section of airtight box.

[0020] Figure 2 This is the satellite communication antenna cover on the back of the aircraft. DETAILED DESCRIPTION

[0021] The present invention provides a back-mounted satellite communication antenna installation platform, such as Figure 1 As shown, it is composed of an antenna mounting base 1, an upper section of an airtight box 2 and a lower section of an airtight box 3. It adopts a combined integrated design of an installation platform, an antenna cover, and a satellite communication component. An airtight box is set at the lower part of the reinforced mouth frame. The airtight box is divided into two sections, the upper section is cylindrical, and the lower section is a square structure. The upper section is fixedly connected to the reinforced mouth frame of the fuselage. The upper and lower sections and the bottom plate of the lower section and the surrounding side walls are designed to be detachable and sealed to meet the maintenance requirements. The installation platform ensures the installation of the satellite communication antenna, while reducing aerodynamic resistance, improving the aerodynamic flow field at the back installation position, and optimizing the appearance of the satellite communication antenna cover.

[0022] An airtight box is set at the bottom of the reinforced mouth frame. The airtight box is divided into two sections, the upper section is cylindrical and the lower section is square. The upper section is fixedly connected to the fuselage reinforced mouth frame. The upper and lower sections and the bottom plate of the lower section and the surrounding side walls are designed to be detachable and sealed to meet the maintenance requirements. The installation platform ensures the installation of the satellite antenna, while reducing aerodynamic resistance, improving the aerodynamic flow field at the back installation position, and optimizing the appearance of the satellite antenna cover.

[0023] A Φ400mm satellite communication antenna installation surface is designed between the 53 long stringers on the left and right sides of the upper part of the fuselage 37-38 frames, and a δ1.2mm aluminum alloy annular reinforcement pad is added to the corresponding position on the fuselage skin.

[0024] An airtight box is arranged at the lower part of the reinforced mouth frame. The airtight box is divided into two sections, the upper section is cylindrical and the lower section is a square structure. The upper section is fixedly connected to the reinforced mouth frame of the fuselage. The upper and lower sections and the bottom plate of the lower section and the surrounding side walls are designed to be detachable and sealed to meet the maintenance requirements.

[0025] Compensation plates are added to the front and rear 37 and 38 frame edges of the airtight box connection area for reinforcement, and 53a reinforcing long stringers are added on the left and right sides. The front and rear 37 and 38 frame reinforced frame edges and the 53a reinforcing long stringers on the left and right sides form a tic-tac-toe structure to strengthen the layout.

[0026] The satellite communication antenna cover is in the shape of a teardrop, with maximum dimensions of: 1720mm long, 1200mm wide, and 700mm high.

[0027] Taking into account the requirements of stiffness, strength and electrical performance, the satellite communication antenna cover adopts a C sandwich structure with a design weight of 21.876kg.

[0028] The height of the C sandwich structure is 6.5mm, of which the thickness of the inner, middle and outer skins are all 0.55mm. A quartz fiber / modified hydroester resin composite material is selected. The height of the two core layers is 2.45mm. Aramid paper honeycomb g with a cell side length of 2mm is selected.

[0029] In order to ensure the connection strength of the fuselage skin, when the satellite communication antenna cover is connected to the fuselage skin, a δ1.2mm aluminum alloy annular reinforcement pad is added to the corresponding area outside the skin for reinforcement.

[0030] To facilitate maintenance, the satellite communication antenna cover is connected to the fuselage skin and reinforcement pad using 42 quick-release locks (16A2-1285) and 4 φ8 tapered pins.

Claims

1. A satellite communication antenna mounting platform on the back of an aircraft, characterized in that: include: Antenna mounting base, reinforced frame, and airtight box for installing satellite communication antennas; The antenna mounting base is arranged on the outer surface of the skin of the long stringer 53 on the left and right sides of the upper part of the fuselage 37-38 frame; The reinforced opening frame is arranged between the antenna mounting seat and the airtight box, and is used to bear the weight load of the airtight box and the satellite communication antenna; The airtight box is installed on the inner surface of the skin through a reinforced frame to achieve airtightness inside the fuselage.

2. The installation platform according to claim 1, characterized in that: The airtight box is divided into two sections, the upper section is a cylindrical structure, the lower section is a square structure, and the upper section is fixedly connected to the reinforced opening frame.

3. The installation platform according to claim 2, characterized in that: The upper and lower sections of the airtight box and the bottom plate of the lower section and the surrounding side walls are designed to be detachably sealed to meet the maintenance requirements.

4. The installation platform according to claim 2, characterized in that: Compensation sheets are added to strengthen the frame edges 37 and 38 at the front and rear of the airtight box connection area.

5. The installation platform according to claim 2, characterized in that: A reinforcing long girder 53a is added between the long girder 53 and 54 on the left and right sides, and the front and rear frame reinforcing frame edges 37 and 38 and the 53a reinforcing long girder on the left and right sides form a tic-tac-toe structure reinforcement layout.

6. The installation platform according to claim 1, characterized in that: The diameter of the satellite communication antenna mounting surface of the antenna mounting base is 400mm.

7. The installation platform according to claim 6, characterized in that: The thickness of the antenna mount is 1.2mm.

8. The installation platform according to claim 1, characterized in that: The antenna mounting base is an aluminum alloy annular reinforcement pad.

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