CN210734500U

CN210734500U - Large-scale amphibious aircraft flotation pontoon drainage structures

Info

Publication number: CN210734500U
Application number: CN201921651574.XU
Authority: CN
Inventors: 郝晓宁; 贾伟; 江武; 佟德喜; 刘木君
Original assignee: R&d Institute Of China Aviation Industry General Aircraft Co ltd
Current assignee: South China Aircraft Industry Co Ltd of China Aviation Industry General Aircraft Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-12
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to a large-scale amphibious aircraft flotation pontoon drainage structures belongs to aircraft design field. The existing amphibious aircraft buoy has poor drainage effect and serious corrosion inside the buoy. The utility model discloses a large-scale amphibious aircraft flotation pontoon drainage structures, including the valve that drains, install in the flotation pontoon bottom lower, vaulting pole, its upper portion is connected at the wing lower extreme, and the lower part is passed through 6 frames and 11 frames and is connected, the radome fairing with the flotation pontoon barrel, wraps up respectively in the upper end and the lower extreme of vaulting pole, and the radome fairing is not sealed with flotation pontoon upper portion covering junction. Adopt the utility model discloses the structure can effectively get rid of the upper and lower part ponding of flotation pontoon, reduces the inside corruption condition of flotation pontoon.

Description

Large-scale amphibious aircraft flotation pontoon drainage structures

Technical Field

The utility model relates to a large-scale amphibious aircraft flotation pontoon drainage structures belongs to aircraft design field.

Background

Because the amphibious aircraft can often need to take off and land, stop at the surface of water, the inside can ponding of flotation pontoon, and ponding in the flotation pontoon can produce the corruption to the flotation pontoon inner wall for the flotation pontoon faces the problem that the sea water corrodes. This not only affects the buoy life, but also increases flight weight, which is detrimental to flight performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: provides a method for solving the problem of internal corrosion of a buoy of a large amphibious aircraft.

The technical scheme of the utility model is that: the utility model provides a large-scale amphibious aircraft flotation pontoon drainage structures, the lowest department in flotation pontoon bottom is provided with the valve that drains, wherein, the valve that drains includes valve body, sealing washer, plug screw, wherein, the valve body inlays to be established in the flotation pontoon bottom, and its tip is through inlaying in establishing the covering between flotation pontoon bottom structure frame, and root surface shape is unanimous with place covering department, and the root passes through rivet riveting with the covering surface and is connected, is provided with the through-hole between root and the tip, the plug screw cup joints the sealing washer to the interference sets up in the through-hole, just it is little to be provided with the outside bore in the middle of the plug screw, the big chamber groove of.

The water drain valves are positioned on skins 30 mm-40 mm in front of the 6 th frame of the float bowl, one on the left and one on the right, and on skins 30 mm-40 mm in front of the 11 th frame and behind the 11 th frame, one on the left and one on the right.

And a drainage gap is formed between the bottom of the fairing at the stay bar above the floating drum and the skin on the upper surface of the floating drum.

The width of the drainage gap is 1.5-3 mm

The size of the water drainage gap is not more than 20% of the circumference of the bottom of the fairing.

The technical effects of the utility model: the utility model discloses large-scale amphibious aircraft flotation pontoon drainage structural design is simple, and light in weight all effectively gets rid of flotation pontoon upper portion and lower part ponding that can be convenient, can reduce the corruption of ponding to the flotation pontoon structure by a wide margin, has great practical application and worth.

Drawings

FIG. 1 is a schematic view of a large amphibious aircraft pontoon according to the present invention;

FIG. 2 is a schematic view of a brace;

FIG. 3 is a schematic view of a water drain valve;

wherein 11, 12, 13 and 14 are upper fairings;

15. 16, 17 and 18 are lower fairings;

21. 22, 23, 24 and 25 are stay bars;

6 is a skin; 51 is a front-section water drain valve; 52 is a middle section water drain valve; 53 is a rear-section water drain valve;

111 is an upper right fairing; 112 is an upper left fairing; 181 is a lower right fairing;

182 is a lower left fairing; 211 is a front fairing skin; 212 is a stay rod body; 213 is a rear fairing skin;

511 is a valve body; 512 is a seal ring; 513 is a screw plug.

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

Referring to fig. 1, the buoy drainage structure of a large amphibious aircraft of the present invention comprises a fairing, a stay bar and a drain valve. Wherein, the fairing is divided into an upper part and a lower part, and in the figure, 11, 12, 13 and 14 are upper fairings; 18. 16, 17, and 15 are lower fairings, and are respectively provided at upper and lower ends of the

struts

21, 22, 23, 24, and 25, wherein the

struts

21 and 22 share the upper fairing 11, and the

struts

22 and 23 share the lower fairing 16.

And a drainage gap is formed between the bottom of the fairing at the stay bar above the floating drum and the skin on the upper surface of the floating drum. The width of the drainage gap is 1.5-3 m, and the size of the drainage gap is not more than 20% of the perimeter of the bottom of the fairing so as to conveniently drain accumulated water in the fairing and the support rod.

Please refer to fig. 2, which is a schematic diagram of an internal structure of the stay bar 21. The strut 21 comprises a strut body 212, on the outside of which a front fairing skin 211 and a rear fairing skin 213 are arranged, the upper fairing 11 at each end of the strut being divided into an upper right fairing 111 and an upper left fairing 112, and the lower fairing 18 being divided into a lower right fairing 181 and a lower left fairing 182. Other stay bar structures are similar and the description is not repeated.

The water drain valve is arranged at the lowest position of the bottom of the float bowl, please refer to fig. 3, and comprises a valve body, a sealing ring and a plug screw, wherein the valve body is embedded at the bottom of the float bowl, the end part of the valve body is embedded in a skin arranged between structural frames at the bottom of the float bowl, the surface shape of the root part is consistent with that of the skin, the surface of the root part is riveted and connected with the surface of the skin through a rivet, a through hole is arranged between the root part and the end part, the plug screw is sleeved with the sealing ring and is arranged in the through hole in an interference manner, and a cavity groove with a small external caliber and.

The utility model discloses large-scale amphibious aircraft flotation pontoon drainage structures upper portion fluid gets into vaulting

pole

21, 22, 23, 24, 25 from upper

portion radome fairing

11, 12, 13, 14, and the flotation pontoon outside is discharged from the gap of lower

part radome fairing

15, 16, 17, 18 and skin 6 junction.

The front-section fluid of the buoy is collected at the front-section water drain valve 5), the middle-section fluid of the buoy is collected at the middle-section water drain valve 52, the rear-section fluid is collected at the rear-section water drain valve 53, and the screw plug 513 is opened to discharge the fluid out of the buoy.

The above description is only the specific embodiment of the present invention, and the detailed description is made on the present invention, and the detailed part is the conventional technology. However, the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides an amphibious aircraft flotation pontoon drainage structures, its characterized in that, the lowest department in flotation pontoon bottom is provided with the valve that drains, wherein, the valve that drains includes valve body, sealing washer, plug screw, wherein, the valve body inlays to be established in the flotation pontoon bottom, and its tip inlays to be established in the covering between flotation pontoon bottom structure frame, and root surface shape is unanimous with place covering department, and the root passes through rivet riveting with the covering surface and is connected, is provided with the through-hole between root and the tip, the plug screw cup joints the sealing washer to the interference sets up in the through-hole, just it is little to be provided with the outside bore in the middle of the plug screw, the big chamber groove of inner chamber.

2. An amphibious aircraft pontoon drainage structure according to claim 1, wherein the drain valves are located at the skins 30mm to 40mm in front of the frame of the pontoon 6 th frame bottom, two on the left and right, and at the skins 30mm to 40mm in front of and behind the frame of the 11 th frame bottom, two on the left and right.

3. An amphibious aircraft pontoon drainage structure according to claim 2, wherein a drainage gap is provided between the fairing base at the pontoon upper stay and the pontoon upper surface skin.

4. An amphibious aircraft pontoon drainage structure according to claim 3, wherein the drainage gap width is 1.5-3 mm.

5. An amphibious aircraft pontoon drainage structure according to claim 4, wherein the drainage slot dimension does not exceed 20% of the perimeter of the fairing base.

6. An amphibious aircraft pontoon drainage structure according to claim 4, wherein the drainage slot dimension does not exceed 20% of the perimeter of the fairing base.