公开(公告)号：BR8604681A

公开(公告)日：1987-06-23

申请号：BR8604681

申请日：1986-09-29

Applicant: UNITED TECHNOLOGIES CORP

Inventor： NIESSEN FRANK RICHARD ,  SCHNEIDER ROY WILFRIED

IPC: B64C11/50 ,  H02P5/52 ,  G05D13/00

Abstract: An improved slave propeller synchrophaser and mode logic for a multi-propeller aircraft is disclosed. A designated master propeller has at least one associated slave propeller which has its speed and phase controlled with respect to the master by initially controlling the speed of the slave propeller to within a selected constant number of RPM of the master so that the master and slave propellers are periodically in phase and then switching to phase control for controlling the speed of the slave propeller in the presence of a phase difference signal having an absolute magnitude less than a selected absolute magnitude. A selected phase difference relationship between the master and the slave may thus be effected with minimum transient effect on the speed of the slave propeller.