公开(公告)号：US5322246A

公开(公告)日：1994-06-21

申请号：US743667

申请日：1991-08-12

申请人： Preston A. Henne ,  Walter S. Boronow ,  Samuel L. Wong ,  Willard D. Himebaugh

发明人： Preston A. Henne ,  Walter S. Boronow ,  Samuel L. Wong ,  Willard D. Himebaugh

IPC分类号： B64D15/00

CPC分类号： B64D15/00

摘要： An aft facing step situated across the span of an airfoil. A chemical or thermal deicing or running wet anti-icing device is located in or on the airfoil upstream of the step, and causes water to run back towards the step. The step suddenly reduces the thickness of the airfoil chord section, which causes a disturbance in the boundary layer across the span of the airfoil downstream of the step. The aforementioned disturbance causes runback water to form droplets and be blown clear of the airfoil surface downstream of the step, thereby preventing ice from being formed on the airfoil surface downstream of the step.

摘要翻译： 位于翼型跨度跨过的后方朝向台阶。 化学或热除冰或运行的湿式防冰装置位于台阶上游的翼型件中或其上，并使水回向台阶。 该步骤突然减小翼型弦部分的厚度，这导致跨越台阶下游的翼型跨度的边界层的扰动。 上述扰动导致回流水形成液滴，并且在步骤下游从翼型表面吹出，从而防止在台阶下游的翼型表面上形成冰。