Aeronautics and astronautics – Aircraft control – Automatic
Reexamination Certificate
2006-09-22
2009-08-11
Mansen, Michael R (Department: 3644)
Aeronautics and astronautics
Aircraft control
Automatic
C244S00700B
Reexamination Certificate
active
07571879
ABSTRACT:
One embodiment of the present invention is a method for automatically controlling the conversion of a tiltrotor aircraft. An airspeed command for the tiltrotor aircraft is received. The airspeed command is converted to a pylon position. A difference between the airspeed command and a measured airspeed is calculated. The difference between the airspeed command and a measured airspeed is converted to a dynamic pylon position. A total pylon position is calculated from the pylon position and the dynamic pylon position. A pylon of the tiltrotor aircraft is moved to the total pylon position. Another embodiment of the present invention is a system for calculating a position of a pylon of a tiltrotor aircraft based on an airspeed command. The system includes an airspeed command module, a pylon trim position module, a dynamic pylon position module, and a pylon position module.
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“Active Control of Flight Path and Critical Loads in Tilt-Rotor Aircraft.” Daniel J Walker and Mark Kairaj Voskuijl. American Helicopter Society 63rd Annual Forum. May 1-3, 2007.
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Builta Kenneth E.
Gore Billy K.
Harris James E.
Schulte Kynn J.
Bell Helicopter Textron Inc.
Kreiner Michael
Mansen Michael R
Pillsbury Winthop Shaw Pittman LLP
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