Systems and methods for heating a gearbox prior to fan rotation

Abstract

A turbine engine operable in a cold start condition to prevent wear on components of a gearbox assembly of the turbine engine. The turbine engine includes a gearbox assembly, a pump for directing lubricant to the gearbox assembly, a supply line heating path comprising a heat exchanger, a recirculation bypass path, a valve being positionable between a first position to direct the flow of the lubricant into the supply line heating path and a second position to direct the flow of the lubricant into the recirculation bypass path, and an electronic control unit configured to position the valve between the first position and the second position based on a temperature of the lubricant.

Dependencies are inferred from the claim text.