IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0376026
(2010-06-03)
|
등록번호 |
US-8707880
(2014-04-29)
|
우선권정보 |
AU-2009902549 (2009-06-03) |
국제출원번호 |
PCT/AU2010/000687
(2010-06-03)
|
§371/§102 date |
20120220
(20120220)
|
국제공개번호 |
WO2010/139016
(2010-12-09)
|
발명자
/ 주소 |
- Armstrong, Neville Anthony
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
3 |
초록
▼
A multi-hulled vessel (10) configured as a trimaran. The multi-hulled vessel (10) comprises a main hull (15) and at least one outer hull (17) to each side of the main hull. The multi-hulled vessel (10) is provided with motion control means (40) for providing damping to wave-induced motion, thereby o
A multi-hulled vessel (10) configured as a trimaran. The multi-hulled vessel (10) comprises a main hull (15) and at least one outer hull (17) to each side of the main hull. The multi-hulled vessel (10) is provided with motion control means (40) for providing damping to wave-induced motion, thereby offering ride control. The motion control means (40) comprises a forward motion damping device (41) disposed adjacent the bow (25) of the main hull (15), and two aft dampening devices (43) disposed one adjacent the stern (33) of each side hull (17). With this arrangement, one of the motion damping devices (41, 43) is located at or near each apex of a notional triangular envelope (44) of the vessel (10). Each motion damping device (41, 43) is configured to resist wave-induced motion of the multi-hulled vessel (10) and thereby provide a damping effect. Each motion damping device (41, 43) may comprise an underwater hydrofoil (45), although other damping arrangements are possible.
대표청구항
▼
1. A multi-hulled vessel comprising a main hull and at least one side hull to each side of the main hull, each hull having a bow and a stern, and motion control means for providing damping to wave-induced motion, the motion control means comprising a forward motion damping device disposed adjacent t
1. A multi-hulled vessel comprising a main hull and at least one side hull to each side of the main hull, each hull having a bow and a stern, and motion control means for providing damping to wave-induced motion, the motion control means comprising a forward motion damping device disposed adjacent the bow of one of the hulls, and an aft motion damping device disposed adjacent the stern of at least one other of the hulls, wherein the second moment of area of the forward motion damping device, in plan view, about the center of flotation of the multi-hulled vessel is between 5% and 15% of the second moment of area of the waterplane of the multi-hulled vessel, and wherein the second moment of area of each of the aft motion damping devices, in plan view, about the centerline of the multi-hulled vessel is between 2% and 6% of the transverse second moment of area of the waterplane of the multi-hulled vessel. 2. The multi-hulled vessel according to claim 1 wherein each damping device is configured to resist wave-induced motion and thereby provide a damping effect. 3. The multi-hulled vessel according to claim 1 wherein the forward motion damping device is disposed adjacent the bow of the main hull and the aft motion damping device is disposed adjacent the stern of at least one of the side hulls. 4. The multi-hulled vessel according to claim 3 wherein there are two aft motion damping devices, each aft motion damping device being disposed adjacent the stern of a respective one of two side hulls on opposite sides of the main hull. 5. The multi-hulled vessel according to claim 1 wherein each damping device comprises an underwater hydrofoil. 6. The multi-hulled vessel according to claim 5 wherein each underwater hydrofoil comprises a T-foil involving a horizontally disposed wing foil mounted on the lower end of a strut attached to the respective hull. 7. The multi-hulled vessel according to claim 5 wherein each hydrofoil presents a nominally zero angle of attack to the oncoming flow direction in order to reduce drag and is also of a streamlined configuration for drag reduction. 8. The multi-hulled vessel according to claim 5, wherein each hydrofoil is located in relation to the respective hull to be accessible for maintenance or repair while the multi-hulled vessel is afloat. 9. The multi-hulled vessel according to claim 8 wherein each hydrofoil is readily detachable from the hull. 10. The multi-hulled vessel according to claim 8 wherein the hydrofoil at the stern of each side hull is adapted to selectively move upwardly into a position where it is readily accessible to personnel operating from the hull. 11. A multi-hulled vessel according to claim 1 of aluminum construction. 12. A multi-hulled vessel comprising a main hull and at least one side hull to each side of the main hull, each hull having a bow and a stern, and motion control means for providing damping to wave-induced motion, the motion control means comprising a forward motion damping device disposed adjacent the bow of the main hull, and an aft motion damping device disposed adjacent the stern of at least one side hull on each side of the main hull, wherein the second moment of area of the forward motion damping device, in plan view, about the center of floatation of the multi-hulled vessel is between 5% and 15% of the second moment of area of the waterplane of the multi-hulled vessel, and wherein the second moment of area of each of the aft motion damping devices, in plan view, about the centerline of the multi-hulled vessel is between 2% and 6% of the transverse second moment of area of the waterplane of the multi-hulled vessel. 13. A trimaran comprising a main hull and two side hulls each having a bow and a stern, and motion control means for providing damping to wave-induced motion, the motion control means comprising a forward motion damping device disposed adjacent the bow of the main hull, and two aft motion damping devices disposed one adjacent the stern of each side hull, wherein the second moment of area of the forward motion damping device, in plan view, about the center of floatation of the trimaran is between 5% and 15% of the second moment of area of the waterplane of the trimaran, and wherein the second moment of area of each of the aft motion damping devices, in plan view, about the centerline of the trimaran is between 2% and 6% of the transverse second moment of area of the waterplane of the trimaran.
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