GAS TURBINE ENGINE WITH SPLIT LUBRICATION SYSTEM

摘要

A lubrication system for use in a gas turbine engine is comprised of a first pump driven by a first shaft at a first speed and a second pump driven by a second shaft at a second speed that is faster than the first speed. The first and second pumps provide lubricant to an engine operating system. The pumps are optimized based on differential speed changes between the two drive speeds for the respective shafts to provide an optimized oil flow for the engine as a whole. A gas turbine engine and a method of operating a gas turbine engine are also disclosed.