Measurements of the direct pitching oscillation derivative coefficients on three cropped delta and three arrowhead planforms have been made at subsonic and transonic speeds in the N.P.L. 9½ in. High-Speed Tunnel. The cropped ...

Summary.--In this report the results are given of an investigation, without the application of suction, into the lift, drag and pitching moment of an aerofoil of 31.5 per cent thickness/chord ratio designed specifically ...