Dual independent tank and oil system with single port filling

A lubrication system for separately supplying lubricant to first and second set of components, comprising first and second lubricant circulating circuits for separately feeding lubricant to the first and second sets of components, said first and second lubricant circulating circuit being fed by a common supply tank having first and second separate chambers respectively connected in fluid flow communication with said first and second lubricant circulating circuits, a filler port defined in said supply tank for allowing said first chamber to be filled with lubricant, a pump for withdrawing lubricant from said first chamber, wherein a first portion of the lubricant pumped from said first chamber is directed to the first set of components via said first lubricant circulating circuit before being returned back to said first chamber, whereas a second portion of the lubricant fluid pumped from the first chamber is directed into said second chamber through a filling and level maintaining circuit connected to receive a flow of lubricant from said first chamber to initially permit filling of said second chamber and to subsequently maintain a predetermined volume of lubricant in said second chamber.

A dual supply tank for independently supplying lubricant to a gas turbine engine lubricating circuit and an accessory lubricating circuit, comprising first and second separate chambers adapted to separately feed the gas turbine engine lubricating circuit and the accessory lubricating circuit, a single filler port for filling said first chamber, a nozzle for directing a flow of lubricant from said first chamber to a scupper, said scupper being connected in flow communication with said second chamber for allowing filling of said second chamber up to a predetermined level and thereafter redirect the excess lubricant flowing out of the nozzle away from said second chamber.