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Undercarriage weight is typically about

  • A.Fifteen to twenty per cent
  • B.Under one per cent
  • C.Thirty per cent
  • D.Three to five per cent of take-off weight

Answer: D

It is a small but stubborn fraction, and it scales with landing weight and with the sink rate the gear must absorb. Because the gear is carried throughout every flight for use in only a few seconds, it is a persistent target for weight reduction.

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