Title: Improved propeller synchrophaser
Application Number: 86106717 Application Date: 1986.09.30
Publication Number: 1009873 Publication Date: 1987.04.01
Approval Pub. Date: 1991.09.25 Granted Pub. Date: 1991.09.25
International Classifi-cation: B64C11/50;G05D13/62
Applicant(s) Name: United Technology Corp. Address:
Inventor(s) Name: Kermit Ivan Harner
Attorney & Agent: CAO JIHONG
Abstract:
    An improved slave propeller synchrophaser (10) includes a first control (14) responsive to a phase difference signal (28) and a phase difference reference signal (26) for providing a phase error signal (112) and for providing a propeller speed reference bias signal (40) for a speed governor (46), and also includes, according to the present invention, a second control (12) responsive to the phase error signal (112) for providing an engine power reference bias signal (80) for an engine power control for providing a very limited amount of propeller fine speed control within the dead band of the propeller speed governor while at the same time substantially maintaining engine power at the commanded power level.
Time: 6
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