Permeable Membrane Wings
摘要
ThisThin wing sectionwith permeable aft part chapter extends the thin airfoil theory that was formulated in Chap. 3 to the case where the surface of the wing is permeable to the fluid, and, specifically, where the seepage velocity is proportional to the pressure jump across the wing. It shows a diminutive effect of seepage on the aerodynamic forces when the permeable part is limited to the aft half of the wing.