Preliminary Results of Low Speed Wind Tunnel Tests on a Gothic Wing of Aspect Ratio 1.0

Abstract

This note gives preliminary results of low speed balance measurements and flow visualisation tests, on a wing of aspect ratio 1.0. The wing had a convex parabolic leading-edge shape in plan view, and an unswept trailing edge - such wings are now termed "Gothic". All edges were sharp, the centre section was 12% biconvex, and transverse sections were diamond-shaped. Results of tests on a strictly comparable delta wing are not yet available, but where possible the results are compared with tests on other wings of aspect ratio 1.0 with unswept trailing edges.