[특허]Methods and apparatus for aerodynamic and hydrodynamic drag reduction and attitude control for high speed boats

Flow Works Inc.

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Methods and apparatus for aerodynamic and hydrodynamic drag reduction and attitude control for high speed boats

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B63B-001/16
미국특허분류(USC)	114/273; 114/288; 114/289
출원번호	UP-0899543 (2007-09-05)
등록번호	US-7543544 (2009-07-01)
발명자 / 주소	Yap, Loo T.
출원인 / 주소	Flow Works Inc.
대리인 / 주소	Lipsitz & McAllister, LLC
인용정보	피인용 횟수 : 25 인용 특허 : 15

초록
▼

The present invention provides methods and apparatus for reducing sinkage and wetted surface, and thus hydrodynamic drag of a high-speed boat through the generation of aerodynamic lift while decreasing overall aerodynamic drag. At least one lift-generating front wing proximate a bow section of the boat with at least one corresponding front air channel may be provided. At least one lift-generating rear wing proximate a transom section of the boat with at least one corresponding rear air channel may also be provided. At least one of the wings may be adjustable to generate aerodynamic lift with one of: (1) a neutral; (2) a transom-lifting; and (3) a bow-lifting pitching moment about a center of inertia of the boat. At least one wing proximate the leading edge of the tunnel of a multi-hull boat may be provided to increase the operational envelope.

대표
청구항
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What is claimed is: 1. A method for reducing aerodynamic and hydrodynamic drag of a high-speed boat, comprising: providing at least one lift-generating front wing proximate a bow section of a high-speed boat, said at least one front wing having a corresponding at least one front air channel in said bow section; and providing at least one lift-generating rear wing proximate a transom section of said high-speed boat, said at least one rear wing having a corresponding at least one rear air channel in said transom section; at least one of said at least one forward wing and said at least one rear wing being adjustable to generate aerodynamic lift with one of: (1) a neutral; (2) a transom-lifting; (3) a bow-lifting pitching moment about a center of inertia of said boat; wherein: said at least one rear air channel comprises at least one elongated depression carved from said transom section; and the at least one rear wing is positioned within the corresponding at least one rear air channel such that the at least one rear wing does not protrude substantially from a continuous shape of said transom section. 2. A method in accordance with claim 1, further comprising: at least one lift-generating central wing proximate a central section of said boat. 3. A method in accordance with claim 1, wherein: said at least one front air channel comprises at least one elongated depression carved from said bow section; and the at least one front wing is positioned within the corresponding at least one front air channel such that the at least one front wing does not protrude substantially from a continuous shape of said bow section. 4. A method in accordance with claim 3, further comprising: identifying at least one high-stagnation pressure area in the bow section of said boat; wherein said at least one front air channel is carved from a bow section corresponding to the at least one high stagnation-pressure area and is positioned substantially parallel with a direction of forward motion of the boat. 5. A method in accordance with claim 1 further comprising: at least one of positioning and shaping said at least one rear wing to direct downwash from said at least one rear wing to decrease a recirculation zone proximate the transom section such that overall aerodynamic drag of the boat is reduced. 6. A method in accordance with claim 1, wherein: both of said at least one forward wing and said at least one rear wing are adjustable. 7. A method in accordance with claim 1, wherein: at least one of said at least one forward wing and said at least one rear wing are automatically adjustable to restore a neutral pitching moment about the center of inertia based on one or more of a sensed orientation, a sensed rotational acceleration about the center of inertia, and a speed of said boat as said boat travels over water. 8. A method in accordance with claim 1, wherein: said at least one front wing having a corresponding at least one front air channel comprises a starboard front wing having a starboard front air channel and a port front wing having a port front air channel; and said at least one rear wing having a corresponding at least one rear air channel comprises at least one starboard rear wing having a starboard rear air channel and at least one port rear wing having a port rear air channel. 9. A method in accordance with claim 8, wherein: said starboard front wing, said port front wing, said at least one starboard rear wing and said at least one port rear wing are one of manually and automatically adjustable to control pitch, trim, roll, heel, and yaw of said boat. 10. A method in accordance with claim 1, wherein support structure and control equipment for said wings are substantially aerodynamically concealed in a profile of a corresponding section of said boat. 11. A method in accordance with claim 1, wherein at least one of said wings is fitted with one of end plates and winglets. 12. A method in accordance with claim 1, wherein at least one of said wings has a leading edge with multiple contours. 13. A method in accordance with claim 1, wherein: the high speed boat comprises a catamaran; said at least one front air channel comprises an air tunnel formed between sponsons of the catamaran; said at least one front wing is positioned proximate a leading edge of the air tunnel; said at least one front wing is adjustable for controlling said aerodynamic lift. 14. A method in accordance with claim 13, wherein: said at least one front wing positioned proximate the leading edge of the roof of the tunnel formed between the sponsons of the catamaran comprises a starboard front wing positioned on a starboard side proximate said leading edge and a port front wing positioned on a port side proximate said leading edge. 15. A method in accordance with claim 1, wherein: the high speed boat comprises a multi-hull boat; the at least one air front channel comprises one or more air tunnels formed between hull portions; at least one of said at least one front wing is positioned proximate a leading edge of a roof of at least one of said air tunnels; and said at least one front wing is adjustable for controlling at least one of said aerodynamic lift and inlet airflow to said tunnel in order to control at least one of tunnel lift and pitch. 16. A method in accordance with claim 1, wherein: at least a portion of a roof of said front airflow channel is formed by a pressure side of the said at least one forward wing. 17. A method in accordance with claim 1, wherein: a position and angle of attack of at least one of said wings is actively adjustable via mechanical devices. 18. A method in accordance with claim 1, further comprising: instantaneously measuring at least one of an absolute attitude, speed, and rotational acceleration of the boat; and adjusting a position and angle of attack of each of said wings in response to at least one of said measured attitude, speed, and rotational acceleration in order to achieve a desired attitude. 19. A method in accordance with claim 18, wherein: input for said instantaneous adjustment is obtained via at least one of a gyro, a global positioning system, and an accelerometer. 20. A method for reducing aerodynamic and hydrodynamic drag of a high-speed boat, comprising: providing at least one lift-generating front wing proximate a bow section of a high-speed boat, said at least one front wing having a corresponding at least one front air channel in said bow section; and providing at least one lift-generating rear wing proximate a transom section of said high-speed boat, said at least one rear wing having a corresponding at least one rear air channel in said transom section; at least one of said at least one forward wing and said at least one rear wing being adjustable to generate aerodynamic lift with one of: (1) a neutral; (2) a transom-lifting; (3) a bow-lifting pitching moment about a center of inertia of said boat wherein: said at least one front wing having a corresponding at least one front air channel comprises a starboard front wing having a starboard front air channel and a port front wing having a port front air channel; said at least one rear wing having a corresponding at least one rear air channel comprises at least one starboard rear wing having a starboard rear air channel and at least one port rear wing having a port rear air channel; said at least one starboard rear wing comprises a first starboard rear wing and a second starboard rear wing, said first starboard rear wing being arranged in front of said second starboard rear wing; and said at least one port rear wing comprises a first port rear wing and a second port rear wing, said first port rear wing being arranged in front of said second port rear wing. 21. A method in accordance with claim 20, wherein: airflow from a trailing edge of the first starboard rear wing is directed over a suction side of the second starboard rear wing; and airflow from a trailing edge of the first port rear wing is directed over a suction side of the second port rear wing. 22. A method in accordance with claim 21, wherein: said second port and starboard rear wings have a larger angle of attack with respect to the airflow than an angle of attack of the first port and starboard rear wings. 23. A method in for reducing aerodynamic and hydrodynamic drag of a high-speed boat, comprising: providing at least one lift-generating front wing proximate a bow section of a high-speed boat, said at least one front wing having a corresponding at least one front air channel in said bow section; providing at least one lift-generating rear wing proximate a transom section of said high-speed boat, said at least one rear wing having a corresponding at least one rear air channel in said transom section; providing a port freeboard wing proximate a port side of the transom section, said port freeboard wing having a corresponding port freeboard air channel; and providing a starboard freeboard wing proximate a starboard side of the transom section, said starboard freeboard wing having a corresponding starboard freeboard air channel; at least one of said at least one forward wing and said at least one rear wing being adjustable to generate aerodynamic lift with one of: (1) a neutral; (2) a transom-lifting; (3) a bow-lifting pitching moment about a center of inertia of said boat. 24. A method in accordance with claim 23 wherein: said air channels comprise passageways for airflow under the wings; and a profile of the wings is substantially maintained within a profile of a corresponding section of said boat. 25. A method in accordance with claim 23, further comprising: at least one of positioning and shaping said port freeboard wing and said starboard freeboard wing to direct downwash therefrom to decrease a recirculation zone proximate the transom section such that overall aerodynamic drag of the boat is reduced. 26. A method in accordance with claim 23, wherein: said port freeboard wing and said starboard freeboard wing are independently adjustable for one of pulling the bow to port side, pulling the bow to starboard, and assisting in aligning the boat in the direction of travel. 27. A method for reducing aerodynamic and hydrodynamic drag of a catamaran, comprising: providing at least one lift-generating front wing positioned proximate a leading edge of an air tunnel formed between sponsons of the catamaran in a bow section of the catamaran; and providing at least one lift-generating rear wing proximate a transom section of said catamaran, said at least one rear wing having a corresponding at least one rear air channel in said transom section; at least one of said at least one forward wing and said at least one rear wing being adjustable to control aerodynamic lift with one of: (1) a neutral; (2) a transom-lifting; (3) a bow-lifting pitching moment about a center of inertia of said catamaran; and said at least one front wing being further adjustable for controlling inlet airflow to said tunnel in order to control at least one of tunnel lift and pitch. 28. A method for reducing aerodynamic and hydrodynamic drag of a high-speed boat, comprising: providing at least one lift-generating front wing proximate a bow section of a high-speed boat, said at least one front wing having a corresponding at least one front air channel in said bow section; and providing at least one lift-generating rear wing proximate a transom section of said high-speed boat, said at least one rear wing having a corresponding at least one rear air channel in said transom section; at least one of said at least one forward wing and said at least one rear wing being adjustable to generate aerodynamic lift with one of: (1) a neutral; (2) a transom-lifting; (3) a bow-lifting pitching moment about a center of inertia of said boat; and at least one of said wings comprising multiple airfoils arranged in series such that airflow leaving a pressure side of an upstream airfoil energizes a boundary layer of a suction side of a downstream airfoil directly adjacent said upstream airfoil. 29. A method in accordance with claim 28, wherein: said at least one rear air channel comprises at least one elongated depression carved from said transom section; and the at least one rear wing is positioned within the corresponding at least one rear air channel such that the at least one rear wing does not protrude substantially from a continuous shape of said transom section. 30. Apparatus for reducing aerodynamic and hydrodynamic drag of a high-speed boat, comprising: at least one lift-generating front wing proximate a bow section of a high-speed boat, said at least one front wing having a corresponding at least one front air channel in said bow section; at least one lift-generating rear wing proximate a transom section of said high-speed boat, said at least one rear wing having a corresponding at least one rear air channel in said transom section; and adjustment means for adjusting at least one of said at least one forward wing and said at least one rear wing to generate aerodynamic lift with one of: (1) a neutral; (2) a transom-lifting; and (3)a bow-lifting pitching moment about a center of inertia of said boat; wherein: said at least one rear air channel comprises at least one elongated depression carved from said transom section; and the at least one rear wing is positioned within the corresponding at least one rear air channel such that the at least one rear wing does not protrude substantially from a continuous shape of said transom section.

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Methods and apparatus for aerodynamic and hydrodynamic drag reduction and attitude control for high speed boats

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Methods and apparatus for aerodynamic and hydrodynamic drag reduction and attitude control for high speed boats

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