Showing papers on "Tip clearance published in 1970"

On the Characteristics of Wing with Tip Clearance : Part 2, the Case in which the Tip Clearance is Contained within a Uniform Flow

Abstract: The aerodynamic characteristics of a wing with tip clearance are studied. A theoretical investigation of wings of semi-infinite or finite span is made on the lifting-line theory. The author tried to introduce as many as possible images of the wing in order to satisfy the boundary condition at the wall facing the wing tip. Experimental results obtained on a 70mm chord wing (aspect ratio 4.15) with tip clrarance are also reported. Chordwise pressure distribution measured as a function of the angle of incidence is obtained at various spanwise positions and for various tip clearances. The experimental and calculated characteristics of the wing are compared and their discrepancies are explained quantitatively. The effect of the flow pattern of the main stream in the neighborhood of the wing tip on the wing characteristics is also investigated by experiment.