CN-121990151-A - Window frame for a windshield of a civil aircraft and civil aircraft comprising such a window frame

CN121990151ACN 121990151 ACN121990151 ACN 121990151ACN-121990151-A

Abstract

A window frame for a windshield of a civil aircraft and a civil aircraft including the window frame can reduce the number of fasteners or connectors used, and simultaneously can make a force transmission path more continuous, thereby improving the overall load bearing performance. The window frame comprises a first port frame and a second port frame which are used for installing and fixing the windshield, wherein the first port frame and the second port frame are adjacently arranged in the transverse direction of the civil aircraft.

Inventors

WANG ZHILONG
HAN YU
CAO RUIZHI
XU LINA

Assignees

中国商用飞机有限责任公司
中国商用飞机有限责任公司上海飞机设计研究院

Dates

Publication Date: 20260508
Application Date: 20260403

Claims (8)

1. A window frame for a windscreen of a civil aircraft, said window frame comprising a first and a second aperture frame for mounting and securing said windscreen, said first and second aperture frames being arranged adjacent in a transverse direction of said civil aircraft, characterized in that said first and second aperture frames are integrally formed.
2. The window frame of claim 1, wherein the window frame, The first bezel includes a first upper side rail member at an upper edge of the windshield, a first lower side rail member at a lower edge of the windshield, and a first side pillar member at a side of the windshield laterally remote from the second bezel, The second aperture frame includes a second upper side rail member located at an upper edge of the windshield, a second lower side rail member located at a lower edge of the windshield, and a second side pillar member located at a side of the windshield laterally remote from the first aperture frame, and The first and second aperture frames include a common central post member located at a central location in a lateral direction of the windshield.
3. The window frame of claim 2, wherein the window frame, The center pillar is configured to have an I-shaped cross section and includes an upper flange, a lower flange, and a web plate positioned between the upper flange and the lower flange.
4. The window frame of claim 3, wherein the window frame, The center pillar is disposed so that a cross section thereof further includes a protruding portion protruding upward from the upper flange.
5. The window frame of claim 2, wherein the window frame, The first and second upper side members include: A first flange extending toward the first and second lower side members; A first web having one end connected to one end of the first flange and extending in a direction intersecting an extending direction of the first flange; A second flange connected to the other end of the first web and extending toward the first and second lower side members; a third flange connected to one end of the first web and extending in a direction opposite to the extending direction of the first flange, and And the fourth flange is connected with a part between one end and the other end of the first web and extends towards the direction opposite to the extending direction of the first flange.
6. The window frame of claim 2, wherein the window frame, The first and second lower side members include: A fifth flange extending in a direction away from the first and second upper side members; a second web having one end connected to one end of the fifth flange and extending in a direction intersecting an extending direction of the fifth flange; a sixth flange connected to the other end of the second web and extending in a direction away from the first and second upper side members; A seventh flange connected to one end of the second web and extending toward the first and second upper side members, and And an eighth flange connected to a portion between one end and the other end of the second web and extending toward the first and second upper side members.
7. The window frame of claim 2, wherein the window frame, The first side column member and the second side column member include: a ninth flange extending toward the center column member; A third web having one end connected to the ninth flange and extending in a direction intersecting an extending direction of the ninth flange; a tenth flange connected to the other end of the third web and extending toward the center pillar member, and And an eleventh flange connected to a portion between one end and the other end of the third web and extending toward the center pillar member.
8. A civil aircraft comprising a window frame as claimed in any one of claims 1 to 7 and a windshield mounted and secured to the window frame.

Description

Window frame for a windshield of a civil aircraft and civil aircraft comprising such a window frame Technical Field The application relates to the field of civil aviation, in particular to a window frame for a windshield of a civil aircraft and the civil aircraft comprising the window frame. Background It is known that the frame of the windshield frame of a civil aircraft is located in the area of the aircraft cabin cover, directly in front of the pilot, and is the most important structural component of the whole area of the cabin cover and the part to be positioned first in assembly. Currently, the main current civil aircraft mainly adopts a plane pressure plate type windshield, a curved surface pressure plate type windshield and a plane non-bearing screw type windshield. In the case of a flat-panel windshield, the corresponding window frame is a pair of flat-panel frames adjacent to each other in the left-right direction and adopts a involution mode, and the windshield is fixed between the pressing plate and the window frame through a connecting piece, and usually adopts a mounting mode of one-sided insertion of a three-sided pressing plate or a four-sided pressing plate. Since the mouth frame employed is planar, the pilot's view is easily limited. On the other hand, the above-mentioned pile of plane mouth frames usually adopts a butt joint design, which involves more joint parts, discontinuous force transmission paths and adverse effect on air tightness caused by the existence of joints. On the other hand, in the case of adopting a curved surface pressing plate type windshield, the corresponding window frames are a pair of curved surface opening frames which are adjacent left and right and adopt a involution mode, and the windshield is fixed between the pressing plate and the skylight skeleton through a connecting piece and adopts a square pressing plate installation mode. The window frame of this type likewise involves a large number of joint parts, a discontinuous force transmission path and the presence of joints can have a detrimental effect on the air tightness. In addition, in the case of a planar non-load bearing bolted windshield, the corresponding window frame is planar in form and the windshield is secured directly to the window frame by fasteners. The device has the defects that compared with a pressing plate, the device is inconvenient to install and detach, has shorter service life and is easy to limit the visual field. Disclosure of Invention The present application has been made in view of the above circumstances, and an object thereof is to provide a window frame for a windshield of a civil aircraft, which can reduce the number of fasteners or connectors used, and at the same time can make a force transmission path more continuous, thereby improving the overall load bearing performance. One aspect of the present application provides a window frame for a windshield of a civil aircraft, the window frame comprising a first and a second aperture frame to which the windshield is mounted and secured, the first and second aperture frames being arranged adjacent in a transverse direction of the civil aircraft, characterised in that the first and second aperture frames are integrally formed. According to the window frame for the windshield of the civil aircraft, the first port frame and the second port frame are integrally formed, so that butt joints (the butt joints are the sources of gas leakage during cabin pressurization, howling noise during high-speed flight, rainwater infiltration and corrosion) cannot be generated between the first port frame and the second port frame. Thus, the problems of air tightness, squeaking, corrosion and the like caused by the sealing failure due to the existence of the butt joint can be fundamentally eliminated. On the other hand, since the first and second aperture frames are integrally formed, the entire window frame is continuous rather than discontinuous, and there is no "hard spot" or "break point" of joints, bolts or connectors. The integrally formed continuous structure can thereby allow aerodynamic loads, cabin pressurization loads, and installation stresses, etc., transmitted from the windshield to be continuously and smoothly transmitted to the skylight frame or airframe structure through the window frame. Therefore, the number of mounting members can be reduced, and the mounting and the dismounting are easier. Drawings Fig. 1 is a schematic view showing connection of a window frame of an embodiment of the present application to other parts of a civil aircraft. Fig. 2 is a schematic view showing a window frame for a windshield of a civil aircraft according to an embodiment of the present application. Fig. 3 is a schematic view showing a cross section of each main member of the window frame shown in fig. 1. Fig. 4 is a schematic view showing a specific structure of the lower side sill member of the window frame shown in fig. 1. Symbol description S windo