Gearbox assembly

A gearbox assembly comprising:

• a plurality of planet gears secured by a planet carrier, the plurality of planet gears and the planet carrier rotating about a longitudinal centerline axis of the gearbox assembly;
• a planet pin disposed in each planet gear of the plurality of planet gears;
• one or more journal bearings defined by the planet pin and the planet gear of the plurality of planet gears, each planet gear of the plurality of planet gears rotating about the one or more journal bearings;
• an auxiliary lubrication system that stores lubricant therein, the auxiliary lubrication system including one or more lubricant lines that provide fluid communication between the auxiliary lubrication system and the one or more journal bearings, wherein rotation of the planet carrier and the one or more journal bearings generates a suction effect that causes the lubricant in the auxiliary lubrication system to flow through the one or more lubricant lines to the one or more journal bearings during windmilling conditions and during zero gravity conditions or negative gravity conditions;
• and
• a lubricant transfer device for transferring the lubricant from the one or more lubricant lines to the one or more journal bearings, wherein the lubricant transfer device includes a lubricant transfer device radius measured from the longitudinal centerline axis of the gearbox assembly, the one or more journal bearings include a journal bearing outlet radius measured from the longitudinal centerline axis of the gearbox assembly, and the journal bearing outlet radius is greater than the lubricant transfer device radius.