Door arrangement for an aircraft and airplane

Abstract

Door arrangement (10) for an aircraft (100), comprising a door leaf (12) which is pivotable between a closed position in which it closes a door opening (14) of the aircraft (100) and an open position in which it releases the door opening (14), a frame section (16) arranged in the area of ​​the door opening (14), and a hinge arrangement (18) connecting the door leaf (12) to the frame section (16) with several hinge arms, wherein a first (21) of the articulated arms is rotatable about a first axis (A1) on the frame section (16), a second (22) of the articulated arms is rotatable about a second axis (A2) on the frame section (16), a third (23) of the articulated arms is rotatable about a third axis (A3) on the door leaf (12) and a fourth (24) of the articulated arms is rotatable about a fourth axis (A4) on the door leaf (12), wherein the second articulated arm (22) is rotatably coupled at a first position along the second articulated arm (22) to the fourth articulated arm (24) about a fifth axis (A5) and at a second position along the second articulated arm (22) is rotatably coupled to the third articulated arm (23) about a sixth axis (A6), wherein the first position is further away from the second axis (A2) than the second position, wherein the third articulated arm (23) is rotatably coupled at a third position along the third articulated arm (23) to the first articulated arm (21) about a seventh axis (A7) and at a fourth position along the third articulated arm (23) to the second articulated arm (22) about the sixth axis (A6), the third position being further away from the third axis (A3) than the fourth position, and where the first to seventh axes (A1-A7) are essentially aligned parallel to each other.

Description

[0001] The present invention relates to a door arrangement for an aircraft and to an aircraft with the door arrangement.

[0002] Doors of modern aircraft, such as cabin doors, are typically attached to the door frame via a large hinged arm and additional joints. Viewed in a plane perpendicular to the door leaf, the hinged arm has a generally L-shaped cross-section and is rotatably mounted at its ends to the door frame and the door leaf around approximately vertical axes. When the cabin door is closed, the hinged arm extends into the aircraft interior. To open the door, it is first lifted using an opening lever to unlock it. The unlocked door is then swung outwards by the hinged arm and additional joints, with its central main plane parallel to the aircraft's outer surface. In the fully open position, the door is thus aligned parallel to the door opening and offset from it in both the longitudinal and transverse directions, positioned outside the aircraft.

[0003] Individual aspects of aircraft doors can be found in DE 197 02 085 C2, DE 10 2008 030 696 A1 or DE 602 18 365 T2.

[0004] Against this background, it is an object of the present invention to provide a lighter door assembly that requires less installation space and is nevertheless relatively easy to manufacture. Furthermore, it is an object of the invention to provide an aircraft with such a door assembly.

[0005] This problem is solved by a door arrangement having the features of claim 1 and an aircraft having the features of claim 12.

[0006] The door assembly is designed for an aircraft and comprises a door leaf that pivots between a closed position, in which it seals a door opening of the aircraft, and an open position, in which it releases the door opening; a frame section located in the area of ​​the door opening; and a hinge assembly connecting the door leaf to the frame section. The hinge assembly has several articulated arms, a first of which is rotatably mounted on the frame section about a first axis, and a second of which is rotatably mounted on the frame section about a second axis. The term "between" here is to be understood as including the endpoints of the area.

[0007] Furthermore, a third articulated arm is rotatably mounted on the door leaf about a third axis, and a fourth articulated arm is rotatably mounted on the door leaf about a fourth axis. The second articulated arm is also rotatably coupled to the fourth articulated arm about a fifth axis at a first position along its length, and to the third articulated arm about a sixth axis at a second position along its length. The first position is further from the second axis than the second position. The third articulated arm, however, is rotatably coupled to the first articulated arm about a seventh axis at a third position along its length, and to the second articulated arm about a sixth axis at a fourth position along its length. Here, the third position is further from the third axis than the fourth position.The sixth axis preferably passes through a point where the second and third hinge arms intersect, particularly where they overlap. The distance between the second and sixth axes and / or the distance between the third and sixth axes is preferably independent of the position of the door leaf. That is, these distances preferably remain unchanged when the door leaf is pivoted from its closed position to its open position.

[0008] All of the aforementioned axes, i.e., the first through seventh axes, are essentially parallel to one another. Essentially parallel to one another means that, due to manufacturing tolerances and bearing play, the axes may be aligned at small angles to each other, as long as this does not significantly impede the door leaf's movement between the closed and open positions. The first through seventh axes may be essentially vertically aligned when the aircraft is in its horizontal position.

[0009] In a door assembly with these features, the hinge assembly can be built comparatively compactly, thus occupying less installation space in the aircraft. Unlike door assemblies with an L-shaped hinge arm, the hinge assembly according to the present invention can be arranged entirely within an edge region of the door leaf (at the edge of the door opening). When the door is fully open, the hinge assembly according to the invention requires less space in the door opening. Advantageously, the door opening and the door leaf can also be designed to be larger than in conventional door assemblies. This allows passengers to board the aircraft more easily and reduces boarding time. Furthermore, it is possible to dimension the hinge assembly so small that it fits under the door panel, thus occupying significantly less space in the aircraft's interior.The smaller size of the door allows an airline to arrange more seats inside the cabin. Compared to door arrangements where the door leaf is attached to the frame section via a hinge that extends outwards beyond the door leaf, an aircraft with a door arrangement according to the present invention is characterized by improved aerodynamics.

[0010] When the door leaf is in its open position, it protrudes, at least partially, outwards beyond an outer surface of the aircraft in the vicinity of the door opening. In other words, the door opens outwards. The door leaf can be pivoted outwards from its closed position, in which it preferably completely closes the opening, by an opening angle into the vicinity of the aircraft. Preferably, the door leaf is pivoted about a pivot axis that is fixed relative to the frame section. The maximum opening angle can be at least 45 degrees, or at least 60 degrees, or at least 75 degrees, or at least 90 degrees, or at least 120 degrees, or at least 145 degrees, or at least 170 degrees, or at least 180 degrees. Preferably, the opening angle is between 160 and 200 degrees, most preferably between 170 and 190 degrees. It can particularly be 180 degrees. From an opening angle of approximately...At a 90-degree angle, the door leaf preferably extends completely beyond the aircraft's outer surface. If the opening angle is greater than 90 degrees, the door leaf overlaps a portion of the aircraft's outer surface adjacent to the door opening when viewed head-on from the outside. At an opening angle of 180 degrees, the door leaf swings so far out of the door opening that it no longer overlaps it when viewed head-on from the outside.

[0011] The first and / or the second axis is preferably fixed relative to the frame section. In other words, the position of the first and / or second axis preferably remains the same in the frame's reference frame, regardless of the position of the door leaf. The frame section can be a door frame that surrounds the door opening, at least partially. The frame section / door frame can be formed integrally with an outer wall of the aircraft that defines the outer surface. In particular, the door frame and the outer wall can be made of the same material. It is also conceivable that the frame section is part of a frame of the aircraft. In this case, the first and / or the second articulated arm can each be rotatably mounted on a support element extending from the frame towards the door leaf, relative to the frame section.

[0012] A first location where the first articulated arm is mounted on the frame section is preferably further from the outer surface of the aircraft than a second location where the second articulated arm is mounted on the frame section, and / or the second axis. Furthermore, the first axis can be further from the outer surface of the aircraft than the second axis. The first axis can also be positioned closer to the center of the door opening than the second axis. In particular, the first location can be positioned closer to the edge of the door opening than the second location.

[0013] The third and / or fourth axis can be arranged in a fixed position relative to the door leaf in an analogous manner. In this case, the position of the third and fourth axes, respectively, is the same in the reference system of the door leaf, particularly regardless of the door's position. The door leaf can have a door panel on its inner side facing the interior of the aircraft, which is fixed in position in the door leaf's coordinate system. In this case, the hinge assembly is preferably concealed by the door panel. A fourth location where the fourth hinge arm is mounted on the door leaf can be arranged further from the edge of the door opening than a third location where the third hinge arm is mounted on the door leaf when the door leaf is in its closed position.Furthermore, the fourth position can be located closer to an outer surface of the door leaf facing away from the interior of the aircraft than the third position when the door leaf is in its closed position.

[0014] The first and / or fourth hinge arm can be straight. In particular, one or both of these hinge arms can be designed as straight struts. The midplanes of the straight struts can be oriented essentially perpendicular to the first and fourth axes. The second and / or third hinge arm, on the other hand, are preferably curved. When the door leaf is in its closed and / or open position, the second hinge arm, in particular, can be curved away from the fourth hinge arm from the first position towards the second position. The third hinge arm can, in one or both of these cases, be curved away from the first hinge arm from the third position towards the fourth position. Advantageously, the first hinge arm is designed like the fourth hinge arm. Additionally or alternatively, the second hinge arm can be designed like the third hinge arm.In these cases, the articulated arms can be manufactured cost-effectively in large quantities. The curved design allows for a compact joint arrangement while still preventing collisions with the frame element.

[0015] Furthermore, with respect to a plane of symmetry containing the sixth axis, the first axis can be symmetrical to the fourth axis and the second axis symmetrical to the third axis when the door leaf is in its closed position. The plane of symmetry thus passes between the second and third axes. When viewed along one of the first to seventh axes, the first hinge arm, as reflected across the plane of symmetry, is congruent to the fourth hinge arm, and the second hinge arm, as reflected across the plane of symmetry, is congruent to the third hinge arm, particularly when the door leaf is in its closed position.

[0016] The sixth axis is preferably arranged on a first side of a plane containing the first and second axes when the door leaf is in its closed position. However, when the door is fully open, i.e., the opening angle of the door is approximately 180 degrees, the sixth axis is preferably positioned on a second side of the plane opposite the first side. The first side can be the side of the aforementioned plane facing the center of the door opening. The door assembly is thus designed such that the sixth axis crosses the plane containing the first and second axes when the door is opened. Starting from the closed position of the door leaf, the distance between the sixth axis and the first axis preferably increases as the door opens until the sixth axis lies within the plane containing the first and second axes.As the door is opened further, this distance decreases with increasing opening angle, with the distance between the first and sixth axes preferably decreasing with increasing distance of the sixth axis from the plane containing the first and second axes.

[0017] To utilize this fact for more convenient door operation, the door assembly can include a spring element configured to apply a force to the door leaf in the direction of its closed position when the sixth axis is located on the first side of the plane containing the first and second axes. Additionally or alternatively, the spring element can be configured to apply a force to the door leaf in the direction of its fully open position when the sixth axis is located on the second side of the plane containing the first and second axes. For this purpose, the spring element advantageously connects the second articulated arm at the second position and / or the third articulated arm at the fourth position to a point between the first axis and the seventh axis on the first articulated arm. Most preferably, the spring element connects the second articulated arm at the second position and / or the third articulated arm at the fourth position to a point between the first axis and the seventh axis on the first articulated arm.The third articulated arm is connected to the first axis at the fourth position. This allows the spring element to be pre-tensioned when the sixth axis moves in the direction of the plane containing the first and second axes. When the sixth axis lies in this plane, the door leaf is at its dead center, from which it cannot be moved by the spring force. If the sixth axis lies on the first side of the plane, the spring force of the spring element preferably opposes the opening of the door. With a sufficiently large spring force, the spring element can then hold the door leaf in its closed position. If, however, the sixth axis lies on the second side of the plane, the spring force preferably assists the opening of the door. Advantageously, the spring element is then configured to hold the door in its open, and in particular, fully open position.When the door leaf is in its closed position, the spring element can be either tensioned or relaxed. Similarly, the spring element can be tensioned or relaxed when the door leaf is in its open position at an opening angle of approximately 180 degrees.

[0018] In a further development, the spring element is designed as a spring-damper element, which enables damped opening and closing of the door. The spring-damper element can have one or more of the features of the spring element described above. The damping effectively prevents the door from striking the frame section or the outer surface of the aircraft during opening or closing due to spring force, which could otherwise damage it. The spring element or spring-damper element can, for example, comprise a steel spring, a gas spring, and / or a damping element that preferably counteracts the movement of the sixth axis.

[0019] An aircraft proposed here comprises a door arrangement described in detail above. Preferably, the door opening is formed in an outer wall of the aircraft. In particular, it can be provided that the door opening is arranged between two adjacent frames and / or stringers of the aircraft. The frame section can be formed integrally with the outer wall, a frame, and / or a stringer.

[0020] Preferred embodiments of a door arrangement for an aircraft and an aircraft are now explained in more detail with reference to the attached schematic drawings, wherein Fig. 1A shows a first embodiment of a door arrangement in a schematic view, wherein the door leaf is shown in its closed position and in a first open position at an opening angle of approximately 45°; Fig. 1B the door arrangement from Fig. Figure 1A shows a schematic view, with the door leaf depicted in its closed position and in a second open position at an opening angle of approximately 135°; Fig. 1C the door arrangement from Fig. Figure 1A shows a schematic horizontal view, with the door leaf shown in its closed position and in a third open position at an opening angle of approximately 180°; Fig. 2A shows a second embodiment of a door arrangement in a schematic view, wherein the door leaf is shown in its closed position and in a first open position at an opening angle of approximately 45°; Fig. 2B the door arrangement from Fig. 2A shows a schematic view, with the door leaf shown in its closed position and in a second open position at an opening angle of approximately 135°; Fig. 2C the door arrangement from Fig. 2A shows a schematic view, with the door leaf shown in its closed position and in a third open position at an opening angle of approximately 180°; Fig. 3A-3G a door opening sequence of the door arrangement Fig. 2A shows a top view with a viewing direction along one of the first to seventh axes; Fig. 4 shows an embodiment of an aircraft in a perspective partial view from inside the aircraft looking outwards, with the door leaf in its open position; Fig. 5 a detailed view of the aircraft's door arrangement Fig. Figure 4 shows a side view from inside the aircraft, with the door in its closed position; and Fig. 6 the plane out Fig. Figure 4 shows a schematic side view.

[0021] The Fig. Figures 1A-1C show a first embodiment of a door assembly 10 for an aircraft 100 in a schematic top view not to scale. The door assembly 10 comprises a door leaf 12 (shown only partially in the figures), a frame section 16 arranged in the area of ​​a door opening 14, and a hinge assembly 18 connecting the door leaf 12 to the frame section 16 with several hinge arms 21-24. In this embodiment, a first hinge arm 21, a second hinge arm 22, a third hinge arm 23, and a fourth hinge arm 24 are provided in particular. The door leaf 12 is connected between a frame section 12 and a frame section 16. Fig. 1A-1C is pivotable, with solid lines indicating a closed position in which it closes the door opening 14 of aircraft 100, and with dashed lines indicating an open position in which it releases the door opening 14.

[0022] For example, in Fig. As illustrated in Figure 1A, the first articulated arm 21 is rotatable about a first axis A1 on the frame section 16, the second articulated arm 22 is rotatable about a second axis A2 on the frame section 16, the third articulated arm 23 is rotatable about a third axis A3 on the door leaf 12, and the fourth articulated arm 24 is rotatable about a fourth axis A4 on the door leaf 12. The first and second axes A1, A2 are fixed relative to the frame section 16, and the third and fourth axes A3, A4 are fixed relative to the door leaf 12. Each articulated arm 21-24 can therefore rotate at its connection point to the frame section 16 or the door leaf 12 relative to the frame section 16 or the door leaf 12, respectively, but cannot move translationally relative to the frame section 16 or the door leaf 12.

[0023] The second articulated arm 22 intersects the third articulated arm 23 at an intersection point X, where the second and third articulated arms 22 are rotatably coupled to each other about a common sixth axis A6. Specifically, the second articulated arm 22 is rotatably coupled to the fourth articulated arm 24 about a fifth axis A5 at a first position along the second articulated arm 22, and at a second position (at intersection point X) it is rotatably coupled to the third articulated arm 23 about the sixth axis A6 along the second articulated arm 22. The sixth axis A6 can therefore pass through intersection point X. The first position is further away from the second axis A2 than the second position. In other words, intersection point X lies between the second axis A2 and the fifth axis A5. The first through seventh axes A1-A7 are essentially parallel to each other.

[0024] Preferably, the intersection point X is located in a projection plane containing the intersection point X, which is perpendicular to the axes A1 to A7, at the same distance from the first axis A1 as from the fourth axis A4 when the door leaf 12 is in its closed position. In this state and along this projection plane, the intersection point X can also be at the same distance from the second axis A2 as from the third axis A3 and / or from the fifth axis A5 as from the seventh axis A7. Since the axes A1-A7 are essentially parallel to each other, the aforementioned distance relationships apply analogously with respect to the sixth axis A6 instead of the intersection point X.Relative to a plane of symmetry E1 containing the sixth axis A6, the first axis A1 is symmetrical to the fourth axis A4 and the second axis A2 is symmetrical to the third axis A3 when the door leaf 12 is in its closed position (cf. . Fig. 3A regarding the second embodiment).

[0025] The third articulated arm 23 is rotatably mounted at a third position along the first articulated arm 21 about a seventh axis A7 and at a fourth position, at the intersection point X, along the second articulated arm 22 about a sixth axis A6. The third position is further away from the third axis A3 than the fourth position. For example, the third position can be located at an end of the first articulated arm 21 opposite the frame section 16 and / or at an end of the third articulated arm 23 opposite the door leaf 12. Furthermore, the first position can be located at an end of the second articulated arm 22 opposite the frame section 16 and / or at an end of the fourth articulated arm 24 opposite the door leaf 12.

[0026] The four articulated arms 21, 22, 23, 24 of the door assembly 10 according to the first embodiment are also in the Fig. Figures 3A-3G, 4, and 5 are shown in the context of other embodiments. The first and fourth articulated arms 21 and 24 are straight, in particular, in a plane perpendicular to axes A1 to A7, for example, the projection plane. They can, for example, be designed as (flat) struts. The first articulated arm 21 preferably extends substantially linearly from the point where it is attached to the frame section 16 to the third position. The fourth articulated arm 24 preferably extends substantially linearly from the point where it is attached to the door leaf 12 to the first position. The second and third articulated arms 22 and 23 are curved, in particular, in a plane perpendicular to axes A1 to A7.

[0027] The second articulated arm 22 is curved away from the fourth articulated arm 24 from the first position towards the second position, and the third articulated arm 23 is curved away from the first articulated arm 21 from the third position towards the fourth position when the door leaf 12 is in its closed position. In other words, when the second and third articulated arms 22, 23 are projected onto the projection plane when the door is closed, these arms together follow a circle and a semicircle, with the circle intersecting the semicircle at point X. The circle further intersects the second, third, and sixth axes A2, A3, A6, and the semicircle intersects the fifth, sixth, and seventh axes A5, A6, A7. Overall, the first articulated arm 21 is shaped like the fourth articulated arm 24, and the second articulated arm 22 like the third articulated arm 23.

[0028] As already mentioned, in the Fig. Figures 1A-1C show the hinge arms 21 to 24 of the hinge assembly 18 in the closed position of the door leaf 12 with solid lines and in the open position of the door leaf 12 with dashed lines. When the door leaf 12 is opened from its in Fig. When the door leaf 12 is opened from the closed position shown in Figure 1A, the third articulated arm 23 takes the first articulated arm 21 coupled to it with it, whereby the first articulated arm 21 rotates about the first axis A1, so that the seventh axis A7 is displaced along a first circular path K1, the center of which is the first axis A1. Similarly, the fourth articulated arm 24 takes the second articulated arm 22 coupled to it with it, so that the fifth axis A5 is displaced along a second circular path K2, the center of which is the second axis A2. Due to the coupling between the second articulated arm 22 and the third articulated arm 23, the intersection point X cannot move along the second or third articulated arm 22, 23 when the door leaf 12 is moved.Since the articulated arms 21 and 22 are hinged to the frame section 16 as described, and the articulated arms 23 and 24 are hinged to the door leaf 12 as described, and since the distance between the first axis A1 and the second axis A2, as well as the distance between the third axis A3 and the fourth axis A4, is constant, it follows, assuming the articulated arms 21 to 24 have a constant length, that the door leaf 12 is guided along a predefined opening path by means of the hinge arrangement 18. In both cases... Fig. In the door positions shown in 1A, i.e. in the closed position of the door leaf 12 and in the open position, in which the door leaf 12 is opened by an opening angle W of approximately 45 degrees compared to its closed position, the sixth axis A6 is located on a first side of a plane E2 containing the first and the second axis A1, A2.

[0029] As the door is opened further, the door leaf 12, guided by the hinge assembly 18, rotates further in such a way that it is in its Fig. In the open position shown in Figure 1B, where the opening angle is approximately 135°, the door opening 14 is essentially completely clear. In this state, the sixth axis A6 lies in the plane E2. That is, up to this opening angle W, the distance between the sixth axis A6, or the intersection point X, and the first axis A1 increases. At larger opening angles W, the distance between the sixth axis A6, or the intersection point X, and the first axis A1 decreases with increasing opening angle W. When the door leaf 12 is opened, for example, completely, particularly by an opening angle W of approximately 180° (see Figure 1B), the distance between the sixth axis A6, or the intersection point X, and the first axis A1 decreases with increasing opening angle W. Fig. 1C), the sixth axis A6 is located on the second side of plane E2, opposite the first side. As can be seen from the Fig. As can be seen in 1A to 1C, the size of the door leaf 12 is not directly limited by the size of the hinge arrangement 18, since the door leaf 12 swings outwards.

[0030] One in the Fig. The door arrangement 10 shown in Figures 2A-2C and 3A-3G according to a second embodiment differs from that shown in the Fig. The door arrangement 10 shown in Figures 1A-1C is modified by the addition of a spring element 40. In the embodiment shown here, this spring element 40 connects the first articulated arm 21, preferably in the region of the first axis A1, to the second and third articulated arms 22, 23 at the second and fourth positions, respectively (i.e., at the intersection point). Alternatively, the spring element 40 may engage, on the one hand, the first articulated arm 21 between the first axis A1 and the seventh axis A7, and on the other hand, the second articulated arm 22 between the second axis A2 and the fifth axis A5. If the spring element 40 connects the first axis A1 to the intersection point X as described above and shown in the figures, it is pre-tensioned when the door leaf 12 moves from its closed position into the position shown in the figures. Fig. The open position shown in Figure 2A is pivoted. The spring element 40 is thus configured to pull the sixth axis A6 in the direction of the first axis A1. If the door leaf 12 is tilted relative to the vertical, i.e., if the door is pivoted diagonally downwards, the spring force of the filter element 40 counteracts the force of gravity acting on the door leaf, so that the door leaf 12 does not fall open on its own.

[0031] If the door leaf 12 is pivoted further outwards, the sixth axis A6 crosses the plane E2, for example, at an opening angle W of approximately 135 degrees (see Fig. 2B and Fig. 3F). In this state, the spring element 40 is maximally pre-tensioned, and the door leaf 12 is at its dead center, where it is neither closed nor further opened by the spring element 40. After the door leaf 12 has been swung past its dead center, where the sixth axis A6 lies in the second plane E2, the sixth axis A6 is located on the other side of the second plane E2. In this case as well, the spring element 40 pulls the sixth axis A6 in the direction of the first axis A1. Since the distance between the sixth axis A6 and the first axis A1 decreases with increasing opening angle W in this case, the pre-tensioned spring element 40 exerts a force on the door leaf 12 in the opening direction of the door.If the door leaf 12 is tilted relative to the vertical, i.e., the door is swung diagonally downwards, the spring force of the spring element 40 counteracts the force of gravity acting on the door leaf 12, so that the door leaf 12 does not leave its fully open position on its own.

[0032] If the spring element 40 comprises a steel spring, this spring is stretched during pre-tensioning. The spring element 40 can additionally include a damping element, which exerts a damping force on the door leaf 12 in the opposite direction to its movement. Alternatively, the spring element 40 can be designed as a spring-damper element, for example, as a gas spring.

[0033] Furthermore, the door arrangement shows 10 of the Fig. 2A-2C and 3A-3G all features of the door arrangement 10 from the Fig. 1A-1C.

[0034] One in the Fig. 4, Fig. 5 to Fig. The aircraft shown in section 6 comprises the 100 shown in the Fig. The door arrangement 10 is shown in Figures 2A-2C and 3A-3G. The aircraft 100 comprises several frames 102, 104 and stringers 106-116. The door opening 14 is arranged between two adjacent frames 102, 104, each of which has parallel stringers 106-116 extending on the side opposite the door opening 14. Two stringers (for example, stringers 106 and 112) arranged on opposite sides of the door opening 14 extend collinearly to each other. Preferably, all stringers 106-116 run in the longitudinal direction of the aircraft 100. The frames 102, 104 run in transverse planes of the aircraft 100, which are oriented substantially perpendicular to the longitudinal direction. Frame section 16 is formed integrally with an outer wall 118 arranged on frames 102, 104 and stringers 106-116. Alternatively, frame section 16 is conceivable as part of a frame 102, 104 and / or stringer 106-116. The door assembly 10 from the Fig. 4 and Fig. Section 5 has two substantially identical hinge arrangements 18, which are spaced apart from each other along the frame section 16 on the same side of the door leaf 12. These hinge arrangements 18 can each have any features of the hinge arrangement 18 described above.

[0035] As especially from Fig. As can be seen in Figure 5, the articulated arms 21 to 24 of all the joint arrangements described above can extend in three planes perpendicular to at least one of the first to seventh axes A1-A7. For example, the first and fourth articulated arms 21, 24 can extend in a third plane perpendicular to the first and fourth axes A1, A4. The second articulated arm 22 can extend in a fourth plane parallel to the third plane, arranged on a first side of the third plane, and the third articulated arm 23 can extend in a fifth plane parallel to the third plane on a side of the third plane opposite the fourth plane. Furthermore, any two interconnected articulated arms 21-24 can be connected to each other by bolts or pins arranged along the respective connecting axis A1-A7.

[0036] Fig.Figure 6 shows that the door leaf 12 is the aircraft door to the passenger cabin. Alternatively, the door leaf 12 can be an aircraft door to the cargo hold or any other aircraft door, in particular a door opening 14 in an outer wall 118 of the aircraft 100.

Claims

[1] Door arrangement (10) for an aircraft (100), comprising a door leaf (12) which is pivotable between a closed position in which it closes a door opening (14) of the aircraft (100) and an open position in which it releases the door opening (14), a frame section (16) arranged in the area of ​​the door opening (14), and a hinge arrangement (18) connecting the door leaf (12) to the frame section (16) with several hinge arms, wherein a first (21) of the articulated arms is rotatable about a first axis (A1) on the frame section (16), a second (22) of the articulated arms is rotatable about a second axis (A2) on the frame section (16), a third (23) of the articulated arms is rotatable about a third axis (A3) on the door leaf (12) and a fourth (24) of the articulated arms is rotatable about a fourth axis (A4) on the door leaf (12), wherein the second articulated arm (22) is rotatably coupled at a first position along the second articulated arm (22) to the fourth articulated arm (24) about a fifth axis (A5) and at a second position along the second articulated arm (22) is rotatably coupled to the third articulated arm (23) about a sixth axis (A6), wherein the first position is further away from the second axis (A2) than the second position, wherein the third articulated arm (23) is rotatably coupled at a third position along the third articulated arm (23) to the first articulated arm (21) about a seventh axis (A7) and at a fourth position along the third articulated arm (23) to the second articulated arm (22) about the sixth axis (A6), the third position being further away from the third axis (A3) than the fourth position, and where the first to seventh axes (A1-A7) are essentially aligned parallel to each other. [2] Door arrangement according to claim 1, wherein the first and / or the second axis (A1, A2) is arranged in a fixed position relative to the frame section (16). [3] Door arrangement according to claim 1 or 2, wherein the third and / or the fourth axis (A3, A4) is fixed relative to the door leaf (12). [4] Door arrangement according to one of the preceding claims, wherein with respect to a plane of symmetry (E1) containing the sixth axis (A6) the first axis (A1) is arranged symmetrically to the fourth axis (A4) and the second axis (A2) is arranged symmetrically to the third axis (A3) when the door leaf (12) is in its closed position. [5] Door arrangement according to one of the preceding claims, wherein the first and / or the fourth articulated arm (21, 24) is straight. [6] Door arrangement according to one of the preceding claims, wherein the second and / or the third articulated arm (22, 23) is curved. [7] Door arrangement according to one of the preceding claims, wherein the first articulated arm (21) is designed like the fourth articulated arm (24) and / or the second articulated arm (22) is designed like the third articulated arm (23). [8] Door arrangement according to one of the preceding claims, wherein the second articulated arm (22) is curved away from the fourth articulated arm (24) from the first position towards the second position and / or wherein the third articulated arm (23) is curved away from the first articulated arm (21) from the third position towards the fourth position when the door leaf (12) is in its closed position. [9] Door arrangement according to one of the preceding claims, wherein the door leaf (12) is pivotable by at least 80 degrees about a pivot axis which is fixed relative to the frame section (16). [10] Door arrangement according to one of the preceding claims, wherein the sixth axis (A6) is arranged on a first side of a plane (E2) containing the first and second axes (A1, A2) when the door leaf (12) is in its closed position, and wherein the sixth axis (A6) is arranged on a second side of the plane (E2) opposite the first side when the door leaf (12) is in its open position. [11] Door arrangement according to one of the preceding claims, further comprising a spring element (40) arranged such that it is pre-tensioned when the sixth axis (A6) moves in the direction of the plane (E2) containing the first and second axes (A1, A2). [12] Aircraft (100) with a door arrangement (10) according to any one of claims 1 to 11.

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