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    • 4. 发明公开
    • 난기류에 견디는 날개 형상
    • 刀刃形状,以保持湍流
    • KR1020030050840A
    • 2003-06-25
    • KR1020010081374
    • 2001-12-19
    • 한국항공우주연구원
    • 구삼옥
    • B64C3/10
    • B64C3/14B64C2003/145Y02T50/16
    • PURPOSE: A blade shape is provided to improve the structural stability of a blade by partially transforming the shape of a trailing-edge. CONSTITUTION: A blade comprises a strong blade structure(1) to take a structural load and a soft trailing-edge(2). In blowing sudden strong blast from below, the shape of the trailing-edge is transformed to change the flowing angle in the end of the blade. Thereby, the sudden increase of a load against the blade is prevented by preventing the sudden increase of a circulation against the blade structure. In the downward air flow through the strong blast or the turbulence, the trailing-edge is transformed to prevent the sudden change of the load against the blade. Thereby, the structural strength of the blade is improved.
    • 目的:提供叶片形状以通过部分地改变后缘的形状来改善叶片的结构稳定性。 构成:叶片包括强叶片结构(1)以承受结构载荷和柔软的后缘(2)。 在从下方吹出强烈的突然爆炸的情况下,后缘的形状被改变以改变叶片末端的流动角度。 因此,通过防止对叶片结构的循环的突然增加来防止对叶片的负载的突然增加。 在通过强风或湍流的向下空气流中,后缘被变换以防止负载突然变化。 由此,能够提高叶片的结构强度。
    • 6. 发明公开
    • 날개구조 및 그의 제조방법
    • 其结构及其制造方法
    • KR1020000001523A
    • 2000-01-15
    • KR1019980021826
    • 1998-06-12
    • 데이비드 에스 에이치 황
    • 피안시스제이매카베
    • B64C3/50
    • B64C3/14
    • PURPOSE: A wing structure and a manufacturing method thereof are provided to collect air instead of passing through for obtaining a large amount of energy, preventing loosing control caused by a quick-turn, obtaining quietness and safety, and lowering abrasion and break-down. CONSTITUTION: A wing structure comprises:a leading edge(a) and a trailing edge(c) extended continually from both ends of a middle unit to the opposite direction and the middle unit forming a wing shape; a section face having a structure of a pan shape having basically a convex surface and a concave surface; the leading edge directly facing air; the trailing edge including a flange unit(d); the flange unit extended toward the leading edge unit of the concave side having an angle of approximate 90 degrees from the rear unit of the trailing edge.
    • 目的:提供翼结构及其制造方法,以收集空气而不是通过以获得大量的能量,防止由快速转弯引起的松动控制,获得安静和安全,并降低磨损和分解。 构成:翼结构包括:前缘(a)和后缘(c),其从中间单元的两端连续延伸到相反方向,中间单元形成翼形; 具有基本上具有凸面和凹面的盘状结构的截面; 前缘直接面向空气; 所述后缘包括凸缘单元(d); 所述凸缘单元朝向所述凹侧的前缘单元延伸,与所述后缘的后单元成大约90度的角度。
    • 9. 发明公开
    • 양항비가 향상되는 블레이드
    • 刀刃与良好的提升力比
    • KR1020140092040A
    • 2014-07-23
    • KR1020130004246
    • 2013-01-15
    • 부산대학교 산학협력단
    • 서성호한정영홍철현
    • B64C3/10F03D1/06B64C11/18F03D3/06
    • Y02E10/721Y02E10/74B64C3/14F03D1/0641F03D3/061Y02E10/70
    • The present invention relates to a technology in relation to a blade for attaining enhancement of lift to drag ratio by increasing lift coefficient and decreasing drag coefficient. Concretely, the present invention provides the blade where the thickness (delta) of a boundary layer at a separation point is assumed to be 1.38 mm, longitudinally forming a continuous groove on its upper surface, wherein the value of ″l″ is positive when the rear end of the groove is positioned ahead of the separation point, the value of ″l″ is negative when the rear end of the groove is positioned in the rear of the separation point where a distance between the rear end of the grooves and the separation point is ″l″, and ″A″, ″B″ and ″C″ are designed to be 1, 0.12 and -0.5 to 0.5, respectively where a width of the groove is ″d″, a maximum depth of the groove is ″h″, depth ratio (h/delta) is defined to be ″A″, width ratio (h/delta) is defined to be ″B″, and ratio of a length to the separation point (1/delta) is defined to be ″C″, thereby attaining enhancement of the lift to drag ratio (CL/CD).
    • 本发明涉及一种与刀片相关的技术,该技术通过提高升力系数和减小阻力系数来提高提升阻力比。 具体地说,本发明提供了一种叶片,其中在分离点处的边界层的厚度(delta)假设为1.38mm,在其上表面上纵向形成连续的凹槽,其中当“ 槽的后端位于分离点的前方,当凹槽的后端位于分离点的后部时,“l”的值为负,其中凹槽的后端和分离点之间的距离 点为“l”,“A”,“B”和“C”分别设计为1,0.12和-0.5至0.5,其中槽的宽度为“d”,槽的最大深度为 “h”,深度比(h / delta)被定义为“A”,宽度比(h / delta)被定义为“B”,并且定义长度与分离点(1 / delta)的比率 为“C”,从而提高提升阻力比(CL / CD)。