CN116062151A - Windshield frame for aircraft - Google Patents

Abstract

The utility model relates to a windscreen frame for an aircraft, comprising: a first window frame section defining a first windshield mounting surface and including a first side stand section protruding from the first windshield mounting surface; a second window frame section independent of the first window frame section and defining a second windshield mounting surface, and including a second jamb section protruding from the second windshield mounting surface; wherein the upper edges of the first and second window frame sections together comprise an upper edge of the windshield window frame, and the lower edges of the first and second window frame sections opposite the upper edges thereof together comprise a lower edge of the windshield window frame, and wherein the windshield window frame comprises a side pillar joined by the first and second side pillar sections, the side pillar extending from the upper edge to the lower edge of the windshield window frame. The windshield frame structure allows the obstruction to the pilot's vision to be reduced, and has the advantages of simple structure, controllable cost, light weight and high reliability, and can meet the requirement of repeated disassembly and replacement of the windshield.

Description

Windshield frame for aircraft

Technical Field

The utility model relates to the field of mechanical design and manufacture, in particular to the field of aircraft body design, and more particularly relates to a windshield window frame for an aircraft.

Background

The windshield window frame of the aircraft is positioned at the front part of the canopy and is a supporting structure of the windshield glass, and plays roles of windshield glass installation and opening reinforcement.

Typically, a windshield window frame may generally take the form of a plurality of windshield window frame sections. These windshield frame sections are typically either assembled from a plurality of individual segmented window frames or integrally machined from a single blank. The step difference exists in the butt joint of the windshield installation surfaces of the sectional window frame combination, so that the windshield is not tightly sealed, and in actual flight, the windshield is easy to leak air and even water, and the flight safety is affected. And the integrally machined windshield frame has higher machining precision and better windshield tightness.

The currently prevailing forms of windshield connection are the clamp plate and load bolt connection. Wherein. The pressing plate type windshield connection form is not tight in windshield sealing and easy to leak because the bolts do not pass through the windshield, the bearing bolt connection form is complex in the windshield transmission machine body load because of the windshield, the edge connection form and the load transmission path are complex, the windshield manufacturing difficulty is high, no mature product exists in domestic suppliers at present, the windshield rigidity matching and load transmission mechanism and other design difficulties are high, and the windshield airworthiness verification risk is high.

The windshield window frame of the airplane has been successfully practiced on civil airplanes of various types at home and abroad, but the windshield window frame of the airplane has various structural forms, and each form has respective advantages and disadvantages.

Chinese patent No. CN202686752U discloses a net-shaped skylight skeleton for aircraft. The patent provides an aircraft mesh skylight skeleton, which is also a cabin glass mounting and supporting structure. The skylight skeleton comprises more than six mouth frames, and the mouth frames are arranged in bilateral symmetry on the aircraft cabin, are provided with main windshield glass mouth frame, ventilation window glass mouth frame, side windshield glass mouth frame respectively from the centre to both sides of the aircraft cabin. Each mouth frame is formed by splicing 4 skeletons and combining the skeletons by using an angle box joint and a bolt connection, and two ends of the skeleton between the two mouth frames extend forwards and backwards towards the cabin and are connected with the fuselage beam. The patent adopts sectional type windscreen window frame, and every windscreen window frame is formed by 2 window frames concatenation, and sectional butt joint position extremely easily leads to the windscreen installation face to be uneven because of manufacturing tolerance, leads to skylight skeleton and windscreen to seal inadequately, leads to aircraft gas leakage even windscreen water inflow.

Chinese patent No. CN205931224U discloses a ventilation window glass mounting structure. This patent provides a mounting structure for a ventilation window glass. The ventilating window frame comprises an outer window frame, an inner window frame, a sealing band and a fastener. In this patent, the outer and inner window frames are connected by countersunk bolts, one side of the inner and outer window frames forms a channel for mounting the windshield glass, and the other side is provided with a sealing strip on the countersunk side of the bolts, and after the ventilation window is closed, the sealing strip is attached to the frame skeleton of the window frame, and the sealing strip is compressed to play a sealing role. The scheme is aimed at the windshield frame form that has the ventilation window, and ventilation window opening mechanism is complicated, and fault-tolerant rate is low, and at the non-pressurized state in ground, the watertight effect of sealing strip is relatively poor, leads to the rainwater infiltration easily, influences equipment safety.

European patent EP3476717B1 discloses an aircraft wind shield with integrated flange and load distribution insert. This patent provides a form of attachment to a window frame using a multi-layer laminate to secure the windshield. The laminate is formed by stacking a plurality of thin plates, and is arranged at the edge of the windshield, and at least one thin plate extends into the interlayer between the outer glass layer and the middle glass layer. When the sheet is subjected to a pressurized load, the sheet can press the interlayer and the inner glass. The laminated board is connected with the windshield glass by an adhesive layer to form a windshield whole, one side of the laminated board is provided with a bolt hole, and the laminated board is connected with a window frame framework through a bolt. The patent adopts a mode that a plurality of layers of laminated plates are combined with windshield glass to form a whole, the connecting mode between the laminated plates and the windshield glass is complex, the manufacturing difficulty of the windshield is high, and the bird strike resistance is poor.

US patent 10569855B2 discloses a windshield with support rods. This patent provides a windshield with support rods attached to the window frame. The windshield is fixed on the window frame through the pressing plate, and the bolts do not pass through the windshield to directly connect the pressing plate and the window frame. The upper and lower portions of the windshield frame are bridged by support bars that transmit the pressurized loads carried by the windshield to the axial loads in the bars. Due to the smaller diameter of the support rods, there is less obstruction to the pilot's view and may be placed anywhere in the middle or on both sides. After the support rods are arranged, the traditional 6 windshields can be changed into 4 windshields, 2 windshields or even a whole windshield, and the upright posts among the original windshield blocks are replaced by the support rods, so that the width of the view field of the barrier can be reduced, and the requirement of pilots on the view field is met. The design of the patent only considers the condition of single load, does not consider the complex working condition of the windshield and the window frame in the flying process, but the supporting rod can only transmit axial load, the application range is limited, and the real application is difficult.

U.S. patent application US20030062450A1 discloses an aircraft windshield attachment device. The patent provides a structural form for fixing the windshield glass, which adopts a pressing plate type connection, and is mainly connected with a window frame through bolts on one side of an annular integral pressing plate, and a sealing rack for pressing the edge of the windshield glass on the other side of the annular integral pressing plate plays a role in fixing the windshield. The press plate is provided with a countersunk cylindrical hole, the bolt adopts a raised head bolt, the raised head of the bolt is placed in the countersunk hole, and the outer edge of the countersunk hole is provided with a sealing cover or a metal sealing strip, so that the airtight and anti-corrosion effects are achieved. Sealing strips are arranged at the joint of the pressing plate and the window frame, the bolts penetrate through the sealing strips, and when the pressing plate is tightly attached to the window frame, the sealing strips are compressed to play an airtight role. But only the windshield is sealed by pressing the glass edge by the pressing plate, so that the sealing performance is poor, and water and air leakage are easy to occur.

In view of the foregoing, it is known that there is a need in the art of aircraft windshield design and manufacture to provide a windshield and window frame structure that has good sealing performance, a simple connection between the windshield and the window frame, and low difficulty in manufacturing the windshield.

Disclosure of Invention

Based on the technical problems in the prior art, the utility model aims to provide a mounting and supporting structure of a bolt connection type windshield. The bolt-connection windshield in the scheme does not participate in transferring the in-plane load of the canopy and only bears the pressurizing load, so that the windshield opening is required to be reinforced. The structure should strengthen windscreen opening part, realize the installation and the fixed of windscreen to guarantee windscreen seal. The structure should reduce the obstruction to pilot's visual field as far as possible, and simple structure manufacturing, cost are controllable, weight are lighter and the reliability is high, can satisfy the demand of the repeated changing of gear in the route.

To this end, the utility model provides a windshield window frame for an aircraft, comprising:

a first window frame section defining a first windshield mounting surface, the first window frame section including a first side pillar section protruding from the first windshield mounting surface;

a second window frame section independent of the first window frame section, the second window frame section defining a second windshield mounting surface, the second window frame section including a second jamb section protruding from the second windshield mounting surface;

wherein the upper edges of the first and second window frame sections together comprise an upper edge of the windshield window frame, the lower edges of the first and second window frame sections opposite the upper edges thereof together comprise a lower edge of the windshield window frame, and wherein the windshield window frame comprises side uprights joined by the first and second side upright sections, the side uprights extending from the upper edge to the lower edge of the windshield window frame.

According to a preferred embodiment of the windscreen frame of the utility model, said first and second side pillar sections are web sections extending away from said first and second windscreen mounting surfaces from adjacent side edges of said first and second frame sections extending from an upper edge to a lower edge thereof, respectively, and said first and second side pillar sections are joined to each other by mutually facing surfaces.

According to a preferred embodiment of the windscreen frame of the utility model said first and second side pillar sections are provided with a first and a second pillar flange, respectively, facing away from each other at the ends facing away from said first and second windscreen mounting surfaces.

The lack of an inner edge strip at the 6# upright position of the windshield frame may result in insufficient fatigue strength, and thus may be ameliorated by the addition of an inner edge strip. The added inner flange still allows compliance with the requirements regarding obstacle visibility.

According to a preferred embodiment of the windscreen frame of the utility model, said windscreen frame is provided with threaded fasteners penetrating said first side pillar section and said second side pillar section for fixing the shape of the resulting side pillar.

According to a preferred embodiment of the windscreen frame according to the utility model said threaded fastener comprises a high locking bolt and a high locking nut.

According to a preferred embodiment of the windscreen frame according to the utility model said first and second side pillar sections extend from said first and second windscreen mounting surfaces, respectively, towards an inner central direction of said windscreen frame.

According to a preferred embodiment of the windscreen frame according to the utility model said windscreen frame is a symmetrical assembly with a plane of symmetry.

According to a preferred embodiment of the windscreen frame of the utility model, said windscreen frame is constituted by two centrally located and adjacent main windscreen frame sections and side windscreen frame sections respectively located adjacent outside two said main windscreen frame sections, and said first and second frame sections are adjacent main and side windscreen frame sections respectively.

According to a preferred embodiment of the windshield frame of the present utility model, said first side pillar section and said second side pillar section are configured such that the width of the barrier formed by the windshield and said side pillar when the pilot views said windshield frame in the design eye is within the view boundary meeting the AC25.773 and SAE ARP4101/2 requirements.

According to a preferred embodiment of the windscreen frame according to the utility model said first frame section and/or said second frame section are each a single piece integrally machined from a single blank.

Each window frame is integrally machined by a single forging blank, and no butt joint surface exists, so that the flatness of a windshield installation surface can be ensured, no step difference exists, and the air leakage of the windshield can be avoided.

In summary, the utility model is characterized in that a civil aircraft window frame structure suitable for 4 hyperbolic windshields is designed. The scheme forms a structural section at the position of a 6# upright post, namely a side upright post, of the main and side wind shielding window frames. The main side windshield window frame webs are connected back to back through the high locking bolts and the high locking nuts, the section of the window frame is L-shaped, the outer edge strips are wider, the inner edge strips are narrower, and the webs incline to one side of the symmetry plane of the windshield window frame. The design is to ensure that the view of the obstacle at the 6# upright post meets the requirements of AC25.773 and SAE ARP4101/2, and ensure that the width of the obstacle formed by the windshield and the 6# upright post is within the view boundary range when a pilot observes the windshield window frame at the designed eye position.

In addition, the device can meet the reinforcement effect of the fixed windshield glass and the large opening of the canopy, can be used for installing the large-area hyperbolic conformal windshield glass and provides clear vision for pilots. The hyperbolic conformal windshield has lower aerodynamic drag compared to a planar windshield. The utility model consists of a window frame formed by integrally machining 4 aluminum alloy forgings, 1 # 0 upright post and an outer pressing plate, wherein the outer pressing plate, a windshield and the window frame are sequentially connected by bolts and airtight supporting plate nuts. After the bolts are screwed, the sealing rubber strips at the joint surfaces of the windshields and the window frames are compressed, and the airtight effect is good. The airtight supporting plate nut is arranged in the region with the open space inside the cockpit, and can be accessed from the inside of the cockpit without dismantling the windshield, thereby completing detection and maintenance. The windshield can be disassembled and replaced from the outer side, the disassembly and replacement space is open, and the air route replacement is convenient.

Compared with other prior art schemes, the windshield window frame structure for the aircraft has at least the following advantages:

1) The main and side wind-blocking window frames form a structural section at the 6# upright post position. The main side windshield window frame webs are connected back to back through the high locking bolts and the high locking nuts, the section of the window frame is L-shaped, the outer edge strips are wider, the inner edge strips are narrower, and the webs incline to one side of the symmetry plane of the windshield window frame. The design is to ensure that the view of the obstacle at the 6# upright post meets the requirements of AC25.773 and SAE ARP4101/2, and ensure that the width of the obstacle formed by the windshield and the 6# upright post is within the view boundary range when a pilot observes the windshield window frame at the designed eye position.

2) The double-curved-surface type windshield is formed by combining 4 windshield window frames, and the windshield installation surface is a curved surface and is suitable for installing the double-curved-surface conformal windshield. The profile aerodynamic drag of the hyperbolic conformal windshield and window frame structure is lower compared to the planar windshield solution. The single windshield has large area and large pilot visual field range, and only one side upright post is arranged on one side of the scheme, so that the obstacle to the visual field is small;

3) The window frame has simple section form and open space, and can be integrally machined by a single blank, so that the surface of the windshield joint surface is smooth, no butt joint step exists, and the sealing effect of the windshield is good;

4) The bolts are connected, the bolts directly penetrate through the windshield to be connected with the window frame and the pressing plate, and after the bolts are screwed, the compression effect of the sealing strip is good, and the sealing effect of the windshield is good;

5) The supporting plate airtight nut of the windshield window frame is arranged in an area with an open window frame space, can be accessed from the inner side of the cockpit, and is convenient to assemble, disassemble, detect and maintain;

6) The windshield can be detached and replaced from the outer side by adopting a sectional type outer pressing plate, and the detaching and replacing space is opened.

7) The windshield window frame adopts non-bearing bolt connection type, the windshield does not participate in the integral bearing of the nose, the connection interface between the windshield and the window frame is simple, and the manufacturing difficulty of the windshield is low. And the bolts penetrate through the binding, the binding is connected with the glass through the adhesive layer, the edge connection is simple, and the bird strike resistance is good.

Drawings

This document includes drawings to provide a further understanding of various embodiments. The accompanying drawings are incorporated in and constitute a part of this specification.

The drawings illustrate various embodiments described herein and, together with the description, serve to explain the principles and operation of the claimed subject matter.

Technical features of the present utility model will be clearly described hereinafter with reference to the above objects, and advantages thereof will be apparent from the following detailed description with reference to the accompanying drawings, which illustrate preferred embodiments of the present utility model by way of example, and not by way of limitation of the scope of the present utility model.

In the accompanying drawings:

fig. 1 is an exploded isometric view of an aircraft windshield assembly including a preferred embodiment of a windshield window frame for an aircraft in accordance with the utility model.

Fig. 2 is a partial cross-sectional view of an aircraft windshield assembly including a preferred embodiment of a windshield window frame for an aircraft in accordance with the utility model, taken along a horizontal plane at one side pillar.

Fig. 3 is a partial cross-sectional view of an aircraft windshield assembly including another preferred embodiment of a windshield window frame for an aircraft in accordance with the utility model, taken along a horizontal plane at one side pillar.

List of reference numerals

10. Window frame of windscreen

100. First window frame section

110. First side column section

200. Second window frame section

210. Second side column section

310. High lock bolt

320. High lock nut

400. Pressing plate

500. Windshield for vehicle

600. Sealing rubber strip

700. Sealing agent

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings and described below.

While the utility model will be described in conjunction with the exemplary embodiments, it will be understood that this description is not intended to limit the utility model to those illustrated.

On the contrary, the utility model is intended to cover not only these exemplary embodiments but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit and scope of the utility model.

For convenience in explanation and accurate definition in the subject matter of the present utility model, the terms "upper", "lower", "inner" and "outer" are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures.

Various preferred but non-limiting embodiments of the envelope of the present utility model are described in detail below with reference to the accompanying drawings.

Referring to fig. 1-3, a windshield window frame 10 for an aircraft is shown in accordance with a preferred embodiment of the utility model. The windshield window frame 10 includes: a first sash section 100 and a second sash section 200. It is noted that other components of the windshield assembly (in addition to the windshield frame 10, as described in detail below) are schematically illustrated in the drawings for the sake of completeness, but this does not mean that the windshield frame 10 of the present utility model must cooperate with these other components to function.

The first window frame section 100 defines a first windshield mounting surface, and the first window frame section 100 includes a first side stand section 110 protruding from the first windshield mounting surface.

The second sash section 200 is independent from the first sash section 100. In other words, the second window frame section 200 is a separate component from the first window frame section 100. The second window frame section 200 defines a second windshield mounting surface, and the second window frame section 200 includes a second side pillar section 210 protruding from the second windshield mounting surface.

It is noted that neither the first nor the second windshield mounting surfaces herein need be planar, but may also be curved, such as for a curved windshield mounting.

Wherein the upper edges of the first and second frame sections 100, 200 together comprise the upper edge of the windshield frame 10, the lower edges of the first and second frame sections 100, 200 opposite the upper edges thereof together comprise the lower edge of the windshield frame 10, and wherein the windshield frame 10 comprises a side pillar, also known as a 6# pillar, joined by the first and second side pillar sections 110, 210, extending from the upper edge to the lower edge of the windshield frame 10. It will be appreciated by those skilled in the art that in general the side uprights will be arranged to extend up and down generally along the vertical direction when the aircraft is parked, but that a slight deflection may be provided to deviate from the vertical direction as required.

Preferably, the first and second side pillar sections 110 and 210 may be web sections extending away from the first and second windshield mounting surfaces from adjacent side edges of the first and second window frame sections 100 and 200, respectively, extending from the upper edge to the lower edge thereof, and the first and second side pillar sections 110 and 210 are joined to each other by mutually facing surfaces. More preferably, as shown in fig. 2 and 3, the web sections described above may be generally flat plate sections.

The first and second side column sections 110 and 210 are provided with first and second column flanges 111 and 211, respectively, facing away from each other at ends facing away from the first and second windshield mounting surfaces.

According to the inventive concept, the first and/or second sash sections 100, 200, respectively, may preferably be one piece integrally machined from a single blank.

The windshield window frame 10 is provided with threaded fasteners extending through the first side pillar section 110 and the second side pillar section 210 to secure the shape of the resulting side pillar. Preferably, the threaded fasteners may include a high lock bolt 310 and a high lock nut 320, as shown in fig. 2 and 3.

The first and second side pillar sections 110, 210 may extend from the first and second windshield mounting surfaces, respectively, toward the inboard center direction of the windshield window frame 10.

Preferably, the windshield frame 10 is a symmetrical assembly having a plane of symmetry. More preferably, the windshield frame 10 is composed of two main windshield frame sections located in the center and adjacent to each other and side windshield frame sections located outside the two main windshield frame sections respectively adjacent, and the first and second frame sections 100 and 200 are adjacent main and side windshield frame sections respectively.

More specifically, referring to fig. 1, the support structure for the bolt-on windshield (i.e., the windshield window frame) provided may mainly include a left main windshield window frame, a right main windshield window frame, a left side windshield window frame, a right side windshield window frame, a center pillar (i.e., a # 0 pillar), a pressing plate 400 (including a center pillar pressing plate, a left main windshield upper pressing plate, a right main windshield upper pressing plate, a left main windshield lower pressing plate, a right main windshield lower pressing plate, a left side pillar pressing plate, a right side pillar pressing plate, a left side window frame pressing plate, and a right side window frame pressing plate), the connection structure including bolts, airtight pallet nuts (see fig. 2 and 3), and the windshield 500 may include a left main windshield, a right main windshield, a left side windshield, and a right side windshield, for 4 pieces in total.

In the bolted windshield frame structure, the left and right main windshield frames are installed symmetrically and are connected with the web of the center pillar at the symmetry plane by the high lock bolts 310 and the high lock nuts 320. The left side windshield frame and the right side windshield frame are symmetrically arranged and are adjacent to the left main windshield frame and the right main windshield frame respectively. The side uprights of the side windshield are directly connected with the side uprights of the adjacent main windshield by high locking bolts 310 and high locking nuts 320.

The left main windshield, the right main windshield, the left side windshield and the right side windshield can be respectively placed in the corresponding window frames, the hole sites are aligned, the pins penetrate through the windshields and the window frames to temporarily fix the windshields, and then the pressing plates are installed.

The mounting steps of the pressing plate are as follows: firstly, sequentially installing a left main windshield upper pressing plate, a right main windshield lower pressing plate, a left main windshield lower pressing plate, a right main windshield lower pressing plate, a left air baffle pressing plate and a right air baffle pressing plate, pulling out pins at corresponding positions, and installing the pressing plates; finally, a central upright post, a left upright post pressing plate and a right upright post pressing plate are installed.

The hole sites on the windshield and the hole sites on the pressing plate are in one-to-one correspondence with the hole sites on the window frame. After the press plate, the windshield and the window frame hole are aligned, the press plate, the windshield and the window frame are connected by bolts and airtight supporting plate nuts, and the bolts sequentially penetrate through the press plate, the windshield and the window frame. The airtight supporting plate nut is arranged on the inner surface of the window frame, one countersunk head side of the countersunk head bolt is arranged in the countersunk head hole on the outer surface of the pressing plate, one side of the thread is screwed into the airtight supporting plate nut, and the bolt plays a role in fixing the windshield after being screwed for many times. The utility model adopts a bolt connection mode, and bolts directly pass through the pressing plate, the windshield and the window frame. After the bolts are screwed, the sealing racks at the joint of the windshield and the window frame are compressed, so that the airtight effect is achieved, and a better sealing effect is achieved.

The windshield can be equipped with joint strip 600 with window frame laminating one side, and after the bolt was screwed up, joint strip 600 compressed plays the sealed effect. The gap between the pressing plate and the windshield is sealed by the sealing agent 700, and can play a role of waterproofing and airtight.

When the windshield is required to be disassembled in the use process, the bolts can be unscrewed from the outer side, the pressing plate is disassembled, the windshield is replaced, and the installation process is repeated. The outside operation space is open, the replacement is simple and convenient, and the maintainability is better.

The first side pillar section 110 and the second side pillar section 210 are configured such that when a pilot views the windshield frame 10 in a design eye, the width of the barrier formed by the windshield and the side pillars is within the FOV boundary that meets the AC25.773 and SAE ARP4101/2 requirements. The extent of the FOV boundary when this embodiment is employed is schematically illustrated in FIG. 2 by dashed lines and arrows.

Section 4.e. (1) of AC25.773-1 requires that there should be no obstacle in the field of view between 20 degrees right and 20 degrees left in the field of view limit, and that obstacle fields outside this 40 ° range should be kept to a minimum, ideally no more than 3. The pilot should be able to accept a situation where the vision is blocked by another pilot in the range of 80 deg. to the right from the design eye position, and preferably the obstacle can be eliminated by binocular viewing with an average eye size of 63.5mm (2.5 in). This requires that the projected size of the obstruction be no greater than the interocular size. The pilot should right possibly remove the obstacle by binocular viewing with the head moving 13mm (0.5 in) to the left or right. Sunshades may be used to prevent irritation of the pilot's eyes by sunlight, but sunshades do not affect the pilot's vision.

Wherein section 2.2 of SAE ARP4101/2 (PILOT VISIBILITY FROM THE FLIGHT DECK) specifies that the eyepoint of the human eye is located at 31.8mm (1.25 in) on both sides of the design eye position, respectively; the eye can rotate in the horizontal plane with a vertical axis at 84mm (3.3125 in) behind the design eye, which section 3.3 specifies that no obstacle should be present in the pilot's left/right 20 range, and the pilot can use binocular vision to eliminate any obstacle view by moving the head 32mm (1.25 in) left/right.

In general, the integral windshield window frame structure for civil aircraft bolting is preferably suitable for 4 windshield hyperbolic conformal glass schemes, has high structural efficiency, good windshield tightness, lower manufacturing difficulty, easy disassembly and replacement and overhaul, simple and convenient route maintenance and is suitable for forming serialized products.

While the preferred embodiments of the present utility model have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other variations upon the embodiments described herein can be made in view of the detailed description above.

In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

Claims (10)

1. A windshield window frame (10) for an aircraft,

it is characterized in that the method comprises the steps of,

comprising the following steps:

a first window frame section (100), the first window frame section (100) defining a first windshield mounting surface, the first window frame section (100) including a first side pillar section (110) protruding from the first windshield mounting surface;

-a second window frame section (200), the second window frame section (200) being independent with respect to the first window frame section (100), the second window frame section (200) defining a second windshield mounting surface, the second window frame section (200) comprising a second side pillar section (210) protruding from the second windshield mounting surface;

wherein the upper edges of the first and second window frame sections (100, 200) together constitute an upper edge of the windshield window frame (10), the lower edges of the first and second window frame sections (100, 200) opposite to the upper edges thereof together constitute a lower edge of the windshield window frame (10), and wherein the windshield window frame (10) comprises a side pillar formed by joining the first and second side pillar sections (110, 210), the side pillar extending from the upper edge to the lower edge of the windshield window frame (10).

2. The windshield window frame (10) according to claim 1,

it is characterized in that the method comprises the steps of,

the first side pillar section (110) and the second side pillar section (210) are web sections extending away from the first and second windshield mounting surfaces from adjacent side edges of the first and second window frame sections (100, 200) extending from an upper edge to a lower edge thereof, respectively, and the first and second side pillar sections (110, 210) are joined to each other by mutually facing surfaces.

3. The windshield window frame (10) according to claim 2,

it is characterized in that the method comprises the steps of,

the first side column section (110) and the second side column section (210) are provided with a first column flange (111) and a second column flange (211), respectively, facing away from each other at the ends facing away from the first and second windshield mounting surfaces.

4. The windshield window frame (10) according to claim 1,

it is characterized in that the method comprises the steps of,

the windshield window frame (10) is provided with threaded fasteners passing through the first side pillar section (110) and the second side pillar section (210) to fix the shape of the resulting side pillar.

5. The windshield window frame (10) according to claim 4,

it is characterized in that the method comprises the steps of,

the threaded fastener includes a high lock bolt (310) and a high lock nut (320).

6. The windshield window frame (10) according to claim 1,

it is characterized in that the method comprises the steps of,

the first side pillar section (110) and the second side pillar section (210) extend from the first windshield mounting surface and the second windshield mounting surface, respectively, toward an inboard center direction of the windshield window frame (10).

7. The windshield window frame (10) according to claim 6,

it is characterized in that the method comprises the steps of,

the windshield frame (10) is a symmetrical assembly having a plane of symmetry.

8. The windshield window frame (10) according to claim 7,

it is characterized in that the method comprises the steps of,

the windscreen frame (10) is constituted by two centrally located and adjacent main windscreen frame sections and by side windscreen frame sections respectively located adjacent outside the two main windscreen frame sections, and the first (100) and second (200) frame sections are respectively adjacent main and side windscreen frame sections.

9. The windshield window frame (10) according to claim 6,

it is characterized in that the method comprises the steps of,

the first side pillar section (110) and the second side pillar section (210) are configured such that a pilot, when viewing the windshield frame (10) in a design eye, forms a windshield with the side pillar having an obstacle width within a FOV boundary that meets AC25.773 and SAE ARP4101/2 requirements.

10. The windshield window frame (10) according to claim 1,

it is characterized in that the method comprises the steps of,

the first window frame section (100) and/or the second window frame section (200) are each a single piece integrally machined from a single blank.

Images