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Operating empty weight is \( 48 \) t of a \( 90 \) t maximum. The empty weight fraction is

  • A.0.42
  • B.0.53
  • C.0.48
  • D.0.90

Answer: B

Correct answer: 0.53

\[ \frac{48}{90} = 0.533. \] The empty weight fraction is one of the two numbers a Class I estimate turns on, and for a transport it usually lies between about 0.45 and 0.55. A value far outside that range is a signal that the estimate is wrong rather than that the design is remarkable.

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