Manned Spacecraft Design Principles

Figure 7.50 Some simple planforms for tail fins: (a) delta, (b) cropped delta, and (c) rectangular wing. The dashed lines illustrate how fin planforms are joined to form wings used in the lift calculations while the dotted lines denote the mid-chord line.

The aspect ratio A of the wing is the ratio of the area of a square whose side is the span b to the actual planform area of the wing, denoted by S:

$\mathrm{{\rm A}}=\frac{b^2}{S}$ (7.128)

(7.128)

The Mach number enters Eqn (7.127) through the subsonic form of the Prandtl–Glauert factor

$\beta =\sqrt{1-M^2}$ (7.129)

(7.129)

If the ...