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Applying the area rule to an aircraft typically involves

  • A.Waisting the fuselage where the wing is attached
  • B.Increasing the wing thickness at the root
  • C.Adding a sharp leading edge to the fin
  • D.Reducing the wing span

Answer: A

The wing adds cross-sectional area over its own length, so the fuselage is narrowed there to keep the total distribution smooth. The F-102 is the classic case: it could not exceed Mach one until its fuselage was waisted, after which it could.

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