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Flight control surface authority question.

  1. May 31, 2013 #1
    Hey everyone,

    I'm trying to figure out what formula I would use to find the authority a flight control surface (not a wing) would have when deflected. I've been searching and searching for information, but if anyone has done some similar calculations, the help would be greatly appreciated!
  2. jcsd
  3. May 31, 2013 #2


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    Gold Member

    Not a simple question, as the industry still encounters problems here, even in fairly mature aircraft.
    For instance, the prototype C130J was lost because of inadequate control authority in a flight test.
    Plus the authority can vary depending on the air flow around the control surfaces.
    So the basic calculations are just a beginning.
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