The invention discloses a marine boosting sail which comprises a sail body, the sail body comprises an outer skin, the outer skin is provided with an outer convex surface and an inner concave surface, the cross section of the outer skin is crescent, the inner concave surface forms a pressure surface, the outer convex surface forms a suction surface, and when wind blows from one side of a ship to the other side of the ship, the outer convex surface forms a suction surface. The pressure difference between the pressure surface and the suction surface generates thrust in the advancing direction of the ship, the wind isolation body comprises a first wind shielding structure, the first wind shielding structure is of a structure extending from the inner concave surface to the backward direction, the wind isolation body is combined to the sail body in the using process, and the wind isolation body and the sail body are combined to form a cross section. The first wind shielding structures are continuously arranged in the left-right direction of the inner concave face. By means of the arrangement, flow parallel to the sail columns can be slowed down or avoided, or the flow is slowed down or avoided from developing in the direction parallel to the sail columns, and therefore the aerodynamic efficiency of the air volume on the inner concave face (the pressure face) is improved, and the pressure difference between the two surfaces (the pressure face and the suction face) of the sail body can be increased.
本发明公开一种船用助推风帆,包括帆体,帆体包括外皮,外皮具有外凸面和内凹面,该外皮的横截面为月牙状,内凹面形成压力面、外凸面形成吸力面,风从船舶其中一侧舷吹向另一侧舷时,压力面与吸力面之间的压力差产生船舶前进方向的推力,还包括至少一隔风体,该隔风体包括第一遮风结构,第一遮风结构为由内凹面向后方向所延伸的结构,该隔风体在使用时是结合至帆体,结合后的两者所呈现的横截面中,该第一遮风结构沿内凹面的左右方向是连续布置。通过该设置,可以减缓、避免与帆柱平行的流动,或者减缓、避免流动向与帆柱平行方向发展,从而提升风量于内凹面(压力面)的气动效率,为此能够增大帆体两个表面(压力面和吸力面)的压力差。
Marine boosting sail
一种船用助推风帆
01.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
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