IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0508650
(2009-07-24)
|
등록번호 |
US-8387912
(2013-03-05)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
20 |
초록
A lifting foil having a lower trailing course having a margins and an upper leading course margins connected in a manner to enhance lift of the foil.
대표청구항
▼
1. In a lifting foil wherein a coordinate system has its origin at the center-of-gravity of foil and employs 3-axis, X, Y, Z Cartesian coordinate designations wherein +Y is starboard, −Y is port, +X is fore, −X is aft, +Z is up and −Z is down relative to gravity and is subject to a −X freestream, th
1. In a lifting foil wherein a coordinate system has its origin at the center-of-gravity of foil and employs 3-axis, X, Y, Z Cartesian coordinate designations wherein +Y is starboard, −Y is port, +X is fore, −X is aft, +Z is up and −Z is down relative to gravity and is subject to a −X freestream, the combination of (a) a lower configuration having a lower trailing course with a positive camber having a lower starboard margin and a lower port margin, said lower course extending sideward between said lower starboard margin and said lower port margin and being responsive to fluid flow in a direction −X, for generating a first fluid reaction force having a first lifting component in a direction +Z, (b) an upper configuration having an upper leading course with a positive camber having an upper starboard margin and an upper port margin, said upper course being positioned above said lower trailing course and extending sideward between said upper starboard margin and said upper port margin for generating a second fluid reaction force having a second lifting component in said direction +Z, parallel and additive to said first reaction force, (c) a starboard flow guide extending vertically between said lower starboard margin and said upper starboard margin, having a progressively adjusted camber for suppressing spanwise fluid flow in a direction +Y, perpendicular to X and Z, and (d) a port flow guide extending vertically between said lower port margin and said upper port margin, having a progressively adjusted camber for suppressing spanwise fluid flow in a direction −Y, opposite to +Y, wherein a proportionally higher downwash angle is gained in said upper leading course of said upper configuration by virtue of sufficient positive stagger relative to said lower trailing course in said lower configuration and as stagger increases between said upper leading course said lower course creates overall increased lift. 2. A lifting foil according to claim 1, wherein said flow guides are secured to said courses by smooth, continuous connections which blend into said courses at said margins. 3. A lifting foil according to claim 1 wherein said lifting foil has a vertical cross-section which is generally elliptical. 4. A lifting foil according to claim 1 wherein said fuselage is situated midway between said flow guides with a cargo compartment between said margins. 5. A lifting foil according to claim 1 wherein said fuselage is situated midway between said flow guides, said lifting foil being provided with a large starboard passage situated between said fuselage and said starboard flow guide, and a large port passage situated between said fuselage and said port flow guide. 6. A lifting foil according to claim 1 further having three surfaces comprising a first surface defining said port passage, a second surface defining said starboard passage and a third surface defining the exterior shape of said lifting foil. 7. A lifting foil according to claim 6, said fuselage being enclosed by cooperative coverage from said first, second and third surfaces. 8. A lifting foil wherein a coordinate system has its origin at the center-of-gravity of foil and employs conventional 3-axis, X, Y, Z Cartesian coordinate designations wherein +Y is starboard, −Y is port, +X is fore, −X is aft, +Z is up and −Z is down relative to gravity and is subject to a −X freestream, comprising: (a) a lower configuration having a lower trailing course with a positive camber having a lower starboard margin and a lower port margin, said lower course extending sideward between said lower starboard margin and said lower port margin for generating a first fluid reaction force having an upwardly directed lifting component, (b) an upper configuration having an upper leading course with a positive camber having an upper starboard margin and an upper port margin, said upper course being positioned above said lower course and extending sideward between said upper starboard margin and said upper port margin for generating a second fluid reaction force having an upwardly directed lifting component, (c) A starboard flow guide extending vertically between said lower starboard margin and said upper starboard margin, said starboard flow guide comprising: (i) a first upper section secured to said upper starboard margin, (ii) a first lower section secured to said lower starboard margin, and (iv) a first mid-section positioned between said first upper section and said first lower section, (d) A port flow guide extending vertically between said lower poll margin and said upper port margin, said port flow guide comprising: (i) a second upper section secured to said upper port margin, (ii) a second lower section severed to said lower port margin, and (iv) a second mid-section positioned between said second upper section and said second lower section, said starboard flow guide and said port flow guide having cambered cross-sections characterized by a camber which is substantially zero at an associated flow guide mid-point and which increases progressively to maximum values at opposite ends of associated flow guides, wherein a proportionally higher downwash angle is gained in said upper leading course by said upper configuration relative to said lower trailing course in said lower configuration as stagger increases between said upper leading course said lower course thereby creating overall increased lift. 9. A lifting foil wherein a coordinate system has its origin at the center-of-gravity of foil and employs conventional 3-axis, X, Y, Z Cartesian coordinate designations wherein +Y is starboard, −Y is port, +X is fore, −X is aft, +Z is up and −Z is down relative to gravity and is subject to a −X freestream, comprising: (a) an upper configuration having an upper leading course with a positive camber including an upper starboard end and an upper port end, (b) a lower configuration having a lower trailing course with a positive camber including a lower starboard end and a lower port end, said lower course being generally parallel to said upper course with said lower starboard end facing said upper starboard end and said lower port end facing said upper port end, (c) a starboard flow guide having an upper starboard guide section connected to said upper starboard end, a lower starboard guide section connected to said lower starboard end, and a starboard mid-section connecting said upper starboard guide section to said lower starboard guide section, and (d) a port flow guide having an upper port guide section joined to said upper port end, a lower port guide section joined to said lower port end and a port mid-section connecting said upper port guide section to said lower port guide section; said starboard flow guide having a camber which increases progressively from a minimum camber at a mid-point of said starboard flow guide to a maximum camber at said upper starboard end and also being cambered progressively from said mid-point to said lower starboard end said port flow guide having a camber which increases progressively from a minimum camber at a mid-point of said port flow guide to a maximum camber at said upper port end and also being cambered progressively from said mid-point to said lower port end, wherein a proportionally higher downwash angle is gained in said upper leading course by said upper configuration relative to said lower trailing course in said lower configuration as stagger increases between said upper leading course said lower course thereby creating overall increased lift.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.