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A blended wing body is difficult to size using conventional methods because

  • A.It falls outside the regression population
  • B.It has no wing
  • C.It cannot carry payload
  • D.Its aerodynamics are not understood

Answer: A

Empty weight fraction, cabin volume and structural arrangement all differ so much from a tube and wing that the correlations offer no guidance. Physics-based estimation is required, which is slower and carries more uncertainty.

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