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The main structural consequence of a highly swept wing is

  • A.A lighter wing
  • B.No change in structural weight
  • C.A shorter structural span
  • D.A longer structural span, and more weight

Answer: D

The spar runs along the sweep rather than straight out, so the structural span exceeds the aerodynamic one and the bending moment is carried over a greater length. Sweep therefore costs weight as well as low-speed lift.

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