A blended wing body aircraft comprising: an airfoil shaped center body; and a pair of wings extending from opposed sides of the center body; wherein the aircraft has a span direction, and a maximum half-span length defined along the span direction from the centerline of the center body to the tip of one of the wings; wherein a normalized half-span value for each profile section of the aircraft is defined by the ratio between the distance along the span direction from the centerline to the profile section and the maximum half-span length; wherein each profile section of the aircraft has: a thickness ratio (t/C) defined by the ratio between the thickness (t) of the profile section and the chord length of the profile section, and a normalized chord defined by the ratio between the chord length of the profile section and the maximum chord length (C MAX) defined longitudinally by the center body, characterised in that the thickness ratio has a nominal value within the thickness ratio range set forth in the following table, defined as Table 1 Normalized half-span value (dimensionless) Normalized chord range (%) thickness ratio range (%) From To From To 0.000 100.0 100.0 15.2 19.4 0.050 85.4 100.0 15.0 19.4 0.100 58.0 96.0 14.5 19.2 0.125 44.5 92.0 12.2 19.0 0.150 31.0 78.5 9.8 18.7 0.175 26.0 65.0 9.0 18.2 0.200 23.0 51.0 8.7 16.5 0.250 20.0 34.0 8.3 11.8 0.300 17.9 28.0 8.1 11.3 0.350 17.0 24.5 8.0 11.1 0.400 16.0 23.2 8.0 11.0 0.500 14.2 21.3 8.0 10.9 0.600 12.5 19.5 8.0 10.9 0.700 10.7 17.5 8.0 10.9 0.800 9.0 15.7 8.0 10.9 0.900 7.3 13.9 8.0 10.9 1.000 5.5 12.0 8.0 10.9 for at least each profile section corresponding to the normalized half-span values from 0 to 0.2; and the normalized chord has a nominal value within the normalized chord range set forth in Table 1 for at least each profile section corresponding to the normalized half-span values from 0.15 to 0.3. an airfoil shaped center body; and a pair of wings extending from opposed sides of the center body; wherein the aircraft has a span direction, and a maximum half-span length defined along the span direction from the centerline of the center body to the tip of one of the wings; wherein a normalized half-span value for each profile section of the aircraft is defined by the ratio between the distance along the span direction from the centerline to the profile section and the maximum half-span length; wherein each profile section of the aircraft has: a thickness ratio (t/C) defined by the ratio between the thickness (t) of the profile section and the chord length of the profile section, and a normalized chord defined by the ratio between the chord length of the profile section and the maximum chord length (C MAX) defined longitudinally by the center body, characterised in that the thickness ratio has a nominal value within the thickness ratio range set forth in the following table, defined as Table 1 Normalized half-span value (dimensionless) Normalized chord range (%) thickness ratio range (%) From To From To 0.000 100.0 100.0 15.2 19.4 0.050 85.4 100.0 15.0 19.4 0.100 58.0 96.0 14.5 19.2 0.125 44.5 92.0 12.2 19.0 0.150 31.0 78.5 9.8 18.7 0.175 26.0 65.0 9.0 18.2 0.200 23.0 51.0 8.7 16.5 0.250 20.0 34.0 8.3 11.8 0.300 17.9 28.0 8.1 11.3 0.350 17.0 24.5 8.0 11.1 0.400 16.0 23.2 8.0 11.0 0.500 14.2 21.3 8.0 10.9 0.600 12.5 19.5 8.0 10.9 0.700 10.7 17.5 8.0 10.9 0.800 9.0 15.7 8.0 10.9 0.900 7.3 13.9 8.0 10.9 1.000 5.5 12.0 8.0 10.9 for at least each profile section corresponding to the normalized half-span values from 0 to 0.2; and the normalized chord has a nominal value within the normalized chord range set forth in Table 1 for at least each profile section corresponding to the normalized half-span values from 0.15 to 0.3. a thickness ratio (t/C) defined by the ratio between the thickness (t) of the profile section and the chord length of the profile section, and a normalized chord defined by the ratio between the chord length of the profile section and the maximum chord length (C MAX) defined longitudinally by the center body, characterised in that the thickness ratio has a nominal value within the thickness ratio range set forth in the following table, defined as Table 1 Normalized half-span value (dimensionless) Normalized chord range (%) thickness ratio range (%) From To From To 0.000 100.0 100.0 15.2 19.4 0.050 85.4 100.0 15.0 19.4 0.100 58.0 96.0 14.5 19.2 0.125 44.5 92.0 12.2 19.0 0.150 31.0 78.5 9.8 18.7 0.175 26.0 65.0 9.0 18.2 0.200 23.0 51.0 8.7 16.5 0.250 20.0 34.0 8.3 11.8 0.300 17.9 28.0 8.1 11.3 0.350 17.0 24.5 8.0 11.1 0.400 16.0 23.2 8.0 11.0 0.500 14.2 21.3 8.0 10.9 0.600 12.5 19.5 8.0 10.9 0.700 10.7 17.5 8.0 10.9 0.800 9.0 15.7 8.0 10.9 0.900 7.3 13.9 8.0 10.9 1.000 5.5 12.0 8.0 10.9 for at least each profile section corresponding to the normalized half-span values from 0 to 0.2; and the normalized chord has a nominal value within the normalized chord range set forth in Table 1 for at least each profile section corresponding to the normalized half-span values from 0.15 to 0.3.