Discussion
Air already at \( M = 2 \), where \( \nu = 26.38 \) degrees, negotiates a convex corner of \( 23.38 \) degrees. What Mach number does it reach?
Answer: D
Adding the turn gives \( \nu_2 = 26.38 + 23.38 = 49.76 \) degrees, which corresponds to \( M = 3.0 \). Note how much turning the second unit of Mach number costs compared with the first: the function flattens as the Mach number rises.
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