Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tomasz J. Stanecki0
Jeffrey S. Mattice0
Mihir C. Desai0
Date of Patent
January 17, 2006
0Patent Application Number
106143640
Date Filed
July 7, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A power turbine speed control system for a helicopter is disclosed which includes components for generating a power turbine speed signal based upon a demanded rotor speed, a high-order filter for filtering the power turbine speed signal by effectuating a rapid attenuation of main and tail rotor torsional frequencies in the power turbine speed signal without compromising phase at low frequencies, and a governor for providing isochronous power turbine speed and rotor speed control based upon the filtered power turbine speed signal.
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