Pitch control capacitance coupling

Patent · Tue Jul 12 04:00:00 EDT 1988

OSTI ID:7048778

Wyrostek, A J; Mayo, M G

A variable pitch propeller system is described having a stationary side and a rotating side, the rotating side including a plurality of variable pitch propeller blades, as characterized by: first means mounted upon the stationary side for sending control signals to set blade pitch and for receiving position signals relative to the blade pitch; second means mounted upon the rotating side for receiving the control signals and for sending the position signals; and a communications link for carrying the signals between the first and second means, the link having; a high side capacitor having a first plate mounted to the stationary side and electrically attaching to the first means; a low side capacitor having a first plate mounted to the stationary side and attaching electrically to the first means and a second plate mounted to the rotating side and electrically attaching to the second means such that the low side capacitor provides a differential, low potential return path for the control signals from the second means to the first means and the position signals from the first means to the second means.

• Assignee: United Technologies Corp., Hartford, CT
• Patent Number(s): US 4756667
• OSTI ID: 7048778
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
CAPACITORS
CONTROL EQUIPMENT
CONTROL SYSTEMS
COUPLINGS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EQUIPMENT
INSTALLATION
MACHINERY
ORIENTATION
TURBINE BLADES
TURBOMACHINERY
VARIATIONS