公开(公告)号：CA1284682C

公开(公告)日：1991-06-04

申请号：CA516645

申请日：1986-08-22

Applicant: UNITED TECHNOLOGIES CORP

Inventor： HARNER KERMIT I ,  SCHNEIDER ROY W ,  HARRIS MARK L

IPC: B64C11/50 ,  H02P5/52 ,  G05D13/62 ,  B64C11/46

Abstract: Improved Propeller Synchrophaser 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.

公开(公告)号：BR9001708A

公开(公告)日：1991-05-21

申请号：BR9001708

申请日：1990-04-10

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHNEIDER ROY W ,  DIVALENTIN EUGENIO

IPC: B64D31/06 ,  B64C11/30 ,  F02C9/58 ,  G05B11/42 ,  B64C19/02

Abstract: A propeller speed governor having a derivative feedback of propeller speed and having a means such as a switch to open the derivative feed back loop when airspeed exceeds a predetermined amount is shown and described. This derivative inhibit is used to provide improved dynamic compensation at high and low speeds.

公开(公告)号：BR9001706A

公开(公告)日：1991-05-21

申请号：BR9001706

申请日：1990-04-10

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHNEIDER ROY W ,  DIVALENTIN EUGENIO

IPC: B64D31/06 ,  B64C11/30 ,  F02C9/58 ,  B64C19/02

公开(公告)号：BR9001664A

公开(公告)日：1991-05-14

申请号：BR9001664

申请日：1990-04-09

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHNEIDER ROY W ,  LEENHOUTS DAVID E

IPC: B64C11/30 ,  F02C9/58 ,  G05D1/06 ,  B64C19/02

公开(公告)号：CA2014181A1

公开(公告)日：1990-10-11

申请号：CA2014181

申请日：1990-04-09

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHNEIDER ROY W ,  DIVALENTIN EUGENIO

IPC: B64D31/06 ,  B64C11/30 ,  F02C9/58 ,  G05D1/08

Abstract: A ground mode pitch position logic and control is shown and described in this invention. A method for scheduling and limiting the pitch actuator reference signal in accordance with the actuator commanded schedule, propeller overspeed and propeller underspeed.