Aeronautics and astronautics – Aircraft – steering propulsion
Reexamination Certificate
2008-05-20
2008-05-20
Swiatek, Rob (Department: 3643)
Aeronautics and astronautics
Aircraft, steering propulsion
C416S098000
Reexamination Certificate
active
07374130
ABSTRACT:
An integrated propulsion and guidance system for an aircraft or other vehicle includes an engine coupled to a propeller via a driveshaft to produce propulsive force. One or more of the propeller blades are pivotably mounted with respect to the hub of the propeller. A control signal is provided to adjust the blade pitch of the pivotable blades as the blades rotate about the hub. The change in blade pitch as the blade rotates produces a torque imbalance that can be used to control the heading of the vehicle. By varying the magnitude and phase of the control signal provided to the propeller, the torque can be applied in a multitude of distinct reference planes, thereby allowing the orientation of the vehicle to be adjusted through action of the pivotable propeller blade(s).
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Ingrassia Fisher & Lorenz P.C.
Swiatek Rob
The Boeing Company
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