A comparison of APT aerodynamic drag estimation procedure with the results from wind tunnel tests on a scale model APT (IM-AERO-054)

From time to time it is intended to update the APT drag estimates, given in Reference 1, as more information becomes available. Preliminary results from a programme of wind tunnel tests undertaken on a B.R. contract by Hawker Siddeley Aviation at Brough enable a review of these estimates to be...