Pratt-whitney Canada Corp

Pierre-Yves Légaré

Eugene Gekht

Thomas Francis Haslam-Jones

Eduardo David Hawie

Jason Araan Fish

Sylvain Brouillet

Alessandro Ciampa

Michel Labbé

The gas turbine engine has a bleed air aperture formed in the radially outer wall upstream from the combustor and a bearing cavity formed within the radially inner wall, at least two bearing seals enclosing at least one bearing in the bearing cavity and separating the bearing cavity from associated buffer air entry points, an oil supply system including oil paths leading to each of the bearings; a buffer air supply system including buffer air paths leading to each of the entry points and a baffle partitioning one of the entry points.

Gas turbine engine with bearing buffer air flow and method

An aircraft engine lubrication system has a vortex separator, a first pump line having a first pump, an inlet connected to a separated lubricant area at the outlet end of the separator, and an outlet connectable to the engine. A scavenge line is provided for returning lubricant from the engine to an inlet end of the separator. A lubricant tank is connected in fluid flow communication with the separator by a connection line. A second pump line having a second pump has an inlet connected to the lubricant tank and an outlet connected to the separator for pumping lubricant from the tank to the inlet end of the separator.

Lubrication system and method, and vortex flow separator for use therewith

A bearing scavenge system comprises a scavenging passage extending axially through a rotating shaft supported by the bearing assembly. Oil and air are drawn from an oil cavity of the bearing assembly and evacuated through the rotating shaft as the shaft rotates.

Rotating shaft scavenging scoop

A method and device for improved pressure balancing in a bearing chamber pressurization system for gas turbine engines employ a partition member to substantially separate first and second air-oil seals of the bearing housing.

Growing community of inventors

Chambly, Canada

Pierre-Yves Légaré