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Altitude and acceleration command altitude hold algorithm for rotorcraft with large center of gravity range

  • US 8,694,182 B2
  • Filed: 04/03/2007
  • Issued: 04/08/2014
  • Est. Priority Date: 04/03/2007
  • Status: Active Grant
First Claim
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1. A flight control system for a rotary wing rotorcraft comprising:

  • a cyclic controller; and

    a microprocessor with an attitude model, an acceleration model and an Attitude and Acceleration Command/Velocity Hold (AACVH) algorithm, said microprocessor in communication with said cyclic controller, said AACVH algorithm operable to blend an attitude command from said attitude model with an acceleration command from said acceleration model to determine a trim attitude for a given rotorcraft hover flight condition such that said collective cyclic controller returns must be returned to a neutral position to achieve said hover flight condition, said neutral position is a center detent position for said cyclic controller;

    wherein said AACVH algorithm holds constant attitude and holds constant acceleration in response to said cyclic controller being held out of said center detent position.

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