A helicopter tail folding system
AssigneeTusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi
InventorFurkan YILMAZ
Life of this patent
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Abstract
A tail located on a helicopter has a front area located on the tail, a rear area connected to the front area in a foldable manner around the axis, and a first shaft at the front area and a second shaft at the rear area allows power transfer to the tail rotor throughout the flight movement of the helicopter. A first coupling and a second coupling are located on the first shaft in a gear form. A first hub on the first shaft surrounds the first coupling and is form-compatible with the first coupling to allow the first coupling to perform at least partially a spherical rotational movement, and a second hub form-compatible with the second coupling located on the second shaft opposite the second coupling.
Claims15
A helicopter tail folding system (1) comprising:
- a tail (2) located on a helicopter;
- a front area (201) located on the tail (2);
- a rear area (202) connected to the front area (201) in a foldable manner around an axis on which it is supported;
- a first shaft (3) at the front area (201) and a second shaft (4) at the rear area (202) that allow power transfer to a tail rotor throughout a flight movement of the helicopter;
- a first coupling (5) and a second coupling (6) that are located on the first shaft (3) in a gear form;
- a first hub (7) on the first shaft (3), which surrounds the first coupling (5) and is form-compatible with the first coupling (5) so as to allow the first coupling (5) to perform at least partially a spherical rotational movement;
- a second hub (8) form-compatible with the second coupling (6) and located on the second shaft (4) opposite the second coupling (6);
- an active mode (A) in which power transfer from the first shaft (3) to the second shaft (4) is provided when the second coupling (6) is placed into the second hub (8);
- a passive mode (P) in which power transfer from the first shaft (3) to the second shaft (4) is prevented when the rear area (202) is folded to disconnect the second coupling (6) from the second hub (8),
- a support piece (9) located on an inner wall of the first shaft (3);
- a pin (10) that extends from the support piece (9) for mounting the second coupling (6) to the first coupling (5), and centers the first coupling (5) and the second coupling (6);
- and
- at least one nut (11) which is attached removably to the pin (10) for assembly/maintenance of the first coupling (5) and located on the second coupling (6) so as to be directly accessible by a user in passive mode (P).
Dependencies are inferred from the claim text.