OIL TANK FOR GEARED TURBOFAN ENGINE

An oil delivery system (200) that includes a tank (202) for a gas turbine engine (100), where the tank is positioned radially outward from a compressor section, a combustor section, and/or a turbine section of the gas turbine engine. The tank (202) is configured to store oil for the gas turbine engine. The oil delivery system further includes a primary lubrication system including a sump of a power gearbox (106), a pump, and an oil feed line (206). The oil feed line extends from the tank to the primary lubrication system. The oil feed line is configured to allow a flow of oil to pass from the tank to the pump and from the pump through the power gearbox to the sump of the power gearbox. A thermal management system and a method for supplying oil to a gearbox (106) of a gas turbine engine are also described.