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Roll helix angle describes

  • A.The bank angle achieved
  • B.The sweep angle of the wing
  • C.Tip helix relative to forward speed
  • D.The angle of the wing tips to the fuselage

Answer: C

It is defined as the roll rate times the semi-span divided by the true airspeed and is the standard non-dimensional measure of roll capability. Certification requirements are written in terms of it rather than of roll rate alone.

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