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|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B63B-003/38 B63B-041/00 B63H-025/52|
|미국특허분류(USC)||114/140 ; 114/129 ; 114/138 ; 114/141 ; 114/149|
|발명자 / 주소|
|인용정보||피인용 횟수 : 5 인용 특허 : 8|
An asymmetric wing for decreasing the leeward drift of a vessel has two different surfaces, one of which is cambered in cross-section and the other which has less camber in cross-section or flat. The asymmetric wing has a leading edge pointed toward the bow of the vessel and the trailing edge pointed toward the stern of the vessel. The surfaces of the asymmetric wing can be selectively moved to the port or starboard sides of the vessel. For centerboard and sliding keel vessels, a pair of asymmetric wings are installed in trunks, each asymmetric wing havi...
[ What is claimed is:] [1.] Method for increasing the forward movement of a tacking sailing vessel which is driven by a wind force vector in a favorable forward direction and in an unfavorable leeward drift direction and having at least one submergible appendage with a cambered surface and a less cambered surface so that said appendage generates a lift force vector when water passes thereover including the steps of selectively shaping said cambered surface on said appendage to provide a high lift/drag ratio for said appendage so that the amount of wasted...