Back to results
US 2015/0089918 A1Published application
Gas turbine lubrication systems
AssigneeUnited Technologies Corporation
InventorsChristopher M. Valva, Todd M. Lapierre
Life of this patent
Estimating the term…
Abstract
A casing for a fan drive gear system includes a cast body with an upper and a lower portion. The cast body defines an oil inlet and an oil outlet arranged below the oil outlet. An integrally cast oil channel extends between the inlet and outlet for conveying oil from the upper portion of the cast body portion to the lower portion of the cast body for providing a supply of lubrication to the gear system when oil pools in an upper portion of an auxiliary oil reservoir during negative-G flight events.
Claims20
A casing for a fan drive gear system, comprising:
- a cast body having upper and lower portions, defining:
- an oil inlet;
- an oil outlet arranged below the oil inlet;
- and
- an integrally cast oil channel extending between the oil inlet and oil outlet;
- wherein the oil channel is configured to covey oil from the cast body upper portion to the cast body lower portion for lubricating a fan drive gear system of a geared turbofan engine when oil pools in an upper portion of an auxiliary oil reservoir during negative-G flight events.
3 more elements
Dependencies are inferred from the claim text.