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A heavily loaded aircraft experiences a smaller gust load factor increment than a lightly loaded one because

  • A.The lift curve slope falls with weight
  • B.The increment varies inversely with wing loading
  • C.The gust is weaker at higher weight
  • D.The wing area increases with weight

Answer: B

The gust produces a lift increment that is divided by the weight to give the load factor, so a higher wing loading dilutes it. This is why a transport is most vulnerable to gust loads when it is light, and why the gust envelope must be checked at several weights.

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