Tests in the Royal Aircraft Establish¬ment Io-ft x 7-ft High-Speed Tunnel on 50-deg Swept-back Wings PartⅠThree of 7.5 per cent Thickness PartⅡOne of 7.5 per cent Thickness with Stall Fences and Leading-Edge Chord Extension

摘要

Tests have been made in the Royal Aircraft Establishment 10-ft X 7-ft High-Speed Tunnel on three half-wings having a sweepback of about 50 deg on ,the quarter-chord line and 7 . 5 per cent thick sections. Two of the wings had sections of the RAE 101 shape (maximum thickness at 0-31c) and differed principally in aspect ratio (3-1 and 3 • 5). The third wing had an aspect ratio of about 3 • 1 but a different section shape with its maximum thickness further aft at 0-4c and, as shown by the results of the tests, an effectively sharper nose than for the RAE 101 shape.nLift, drag, pitching moment and root bending moment were measured on all three wings over a range of Mach numbers from 0 .50 to about 0 .95 at a Reynolds number of about 2 x 106, and also for the two wings of smaller aspect ratio for three Reynolds numbers up to about 6 X 106 at a Mach number near 0-2.