With the 3-view drawing and vertical fin detailed in the de Havilland DHC-6 Twin Otter aircraft, estimate the vertical fin values left blank in the table for a cruise condition of 250 ft/s at 10,000 ft altitude. The other table provided may help with calculations.
Select aircraft vertical fin properties: fin height, h = 11.3 ft, S = 1 ft^2, = 45 ft, CL = CLg = rad^-1, CMac = Xac = ft, Yac = ft, 00 = 0 deg, LO = d, n = 1.0. Additional details: Zcg = 0.0 ft.
Table 1: Select airplane characteristics. Wing Horizontal Tail S = 420 ft^2, S = 104 ft^2, C = 6.3 ft, C = 5 ft, iw = 2.0 deg, i = -2.0 deg, C 50'o Gi 0.0, CLg 4.2 rad, C 3.2 rad, -0.06 CMer 0.0, 1.5 rad, Xacw" 19 ft, Xac 41 ft, 1.0 deg, 0.2 = 0.9. General information
Cmoy -0.04, Cmap 0.0 rad
CHoy" 0.0, CMay" 0.0 rad.