Force and moment measurements on a conical body and a rectangular wing, separately and in combination, at Mach number 1.94

Abstract

Results are given of wind-tunnel measurements at M = 1.94 of lift, drag and pitching moment at small angles of incidence on two cones, three rectangular wings and on the six derived cone-wing combinations. A description of the tests and a comparison with theory are also included. The agreement between theory and experiment for the lift of the isolated cones and wings is good; however, for the drag and centre of pressure, agreement is a little less satisfactory. The measured lift of the cone-wing combinations exceeded that estimated, whereas the measured centre-of-pressure position agreed remarkably well with the estimated position. Agreement between measurement and theory for the lowest aspect ratio wing was improved when a correction was applied for the influence on the cone of the downwash generated by the wings. An unsuccessful attempt was made to measure the forces and moments on each component of the cone-wing combination independently, whilst under the influence of the flow field of the other.