Patent ID: 8833086
Filing Date: 2014-09-16
Classification: F01D,F02C,F02K,F05D,F16H,F16N

Abstract:
1. A method of supplying lubricant to a geared architecture in a gas turbine engine, the method comprising: providing a fan including a plurality of fan blades rotatable about an axis; situating a geared architecture for rotating the fan about the axis; providing a lubrication arrangement for supplying lubricant to the geared architecture, the lubrication arrangement including a source of lubricant, having a selectively controllable valve and a bypass associated with the valve; selectively directing lubricant from the source to the geared architecture through the selectively controllable valve; and always directing lubricant to the geared architecture through the bypass associated with the valve independent of an amount of the lubricant directed through the selectively controllable valve; wherein the bypass includes a restrictor, and the method comprises controlling the restrictor to alter an amount of lubricant directed through the bypass to the geared architecture.