Door arrangement for an aircraft, and aircraft
An aircraft door arrangement, comprising a door pivotable between closed and open positions, a frame section in a door opening region, and an articulation arrangement connecting the door and frame section. First and second arms are mounted on the frame section, rotatable about first and second axes, respectively. Third and fourth arms are mounted on the door, rotatable about third and fourth axes, respectively. The second arm, at a first position, is rotatably coupled to the fourth arm about a fifth axis, and at a second position, closer to the second axis, is rotatably coupled to the third arm about a sixth axis. The third arm, at a third position, is rotatably coupled to the first arm about a seventh axis, and at a fourth position, closer to the third axis, is rotatably coupled to the second arm about the sixth axis. All axes are oriented substantially parallel.
1. A door arrangement for an aircraft, comprising:
a door leaf, which is pivotable between a closed position, in which the door leaf closes a door opening of the aircraft, and an open position, in which the door leaf opens up the door opening,
a frame section arranged in a region of the door opening, and
an articulation arrangement which connects the door leaf to the frame section and has a plurality of articulated arms,
wherein a first of the articulated arms is mounted on the frame section so as to be rotatable about a first axis, a second of the articulated arms is mounted on the frame section so as to be rotatable about a second axis, a third of the articulated arms is mounted on the door leaf so as to be rotatable about a third axis and a fourth of the articulated arms is mounted on the door leaf so as to be rotatable about a fourth axis,
wherein, at a first position along the second articulated aim, the second articulated arm is coupled to the fourth articulated arm so as to be rotatable about a fifth axis and, at a second position along the second articulated arm, is coupled to the third articulated arm so as to be rotatable about a sixth axis, wherein the first position is further away from the second axis than the second position,
wherein, at a third position along the third articulated aim, the third articulated arm is coupled to the first articulated arm so as to be rotatable about a seventh axis and, at a fourth position along the third articulated arm, is coupled to the second articulated arm so as to be rotatable about the sixth axis, wherein the third position is further away from the third axis than the fourth position,
wherein the first to seventh axes are oriented substantially parallel to one another, and
wherein at least one of the first articulated arm is configured identical to the fourth articulated arm, or the second articulated arm is configured identical to the third articulated arm.
2. The door arrangement according to claim 1 , wherein at least one of the first or the second axis is arranged in a positionally fixed manner relative to the frame section.
3. The door arrangement according to claim 1 , wherein at least one of the third or the fourth axis is arranged in a positionally fixed manner relative to the door leaf.
4. The door arrangement according to claim 1 , wherein, with respect to a plane of symmetry containing the sixth axis, the first axis is arranged symmetrically with respect to the fourth axis and the second axis is arranged symmetrically with respect to the third axis when the door leaf is in the closed position.
5. The door arrangement according to claim 1 , wherein at least one of the first or the fourth articulated arms is straight.
6. The door arrangement according to claim 1 , wherein at least one of the second or the third articulated arms is curved.
7. The door arrangement according to claim 1 , wherein at least one of
the second articulated arm is curved away from the fourth articulated arm starting from the first position in the direction of the second position, or
the third articulated arm is curved away from the first articulated arm starting from the third position in the direction of the fourth position when the door leaf is in the closed position.
8. The door arrangement according to claim 1 , wherein the door leaf is pivotable by at least 80 degrees about an axis of rotation which is preferably positionally fixed relative to the frame section.
9. The door arrangement according to claim 1 ,
wherein the sixth axis is arranged on a first side of a plane containing the first and the second axis when the door leaf is in the closed position, and
wherein the sixth axis is arranged on a second side of the plane opposite the first side when the door leaf is in the open position.
10. The door arrangement according to claim 1 , further comprising a spring element arranged in a pretensioned manner when the sixth axis moves in a direction of a plane containing the first and the second axis.
11. An aircraft with a door arrangement according to claim 1 .