Alliedsignal Inc.

The Garrett Corporation

John D Sullivan

James P Wojciehowski

Lloyd L Clevenger

An oil scavenge assembly for small gas turbine engine. The assembly includes a rolling element bearing, for supporting a rotating shaft, slip fit within a bearing liner. The bearing liner has a plurality of helical grooves along its surface. A plurality of circumferentially spaced scoops extend inward from the liner and direct the oil expelled from the bearing into the helical grooves.

Dynamic oil scavenge system

An improved variable geometry diffuser assembly is provided. This assembly includes a variety of features that reduce the leakage and improve the precision within the assembly. These features include: sealing disks mounted to the vane; cantilevered vanes mounted for rotation to coolside diffuser wall only, thereby reducing the effects of thermal growth on the assembly; and self lubricating, non-metallic bushings for supporting the various components in the assembly thereby reducing friction and any need for lubrication. Each vane is coupled to a single unison ring through an arm member also employing non-metallic bushings.

Variable geometry diffuser assembly

An aircraft spraying system and method drives a turbine motor by pressurized bleed airflow from the working cycle of a turbomachinery-type propulsion engine driving the aircraft, and a control system regulates the pressure of bleed air flow to the motor to vary the rate of liquid distributed from the aircraft.

Growing community of inventors

Phoenix, AZ, United States of America

John D Sullivan