MINIS1’RY OF AVlAiloN

Errata The following corrections should be made to the text: 8, Page is defined as the lift coefficient acting on the complete system but due solely to the rotation of the fla u/?and This is given as the difference between the CL at a given value of the CL with flap fixed (P = 45O). However, this value of C LR still includes the effect of the flap acting as an ordinary flap on the wing through all its angles of rotation, This effect is eliminated by interpolating for the value of CL at '/v = 0, from Fig.9. At low angles of incidence, the lift coefficient at u/V = 0 is close to that for a fixed flap angle, p = 45O.