Patent ID: 7789200
Filing Date: 2010-09-07
Classification: F01D,F05D

Abstract:
1. A turbine engine comprising: a structure disposed for rotation about an axis; a lubrication system operable to direct lubricant to said structure; a sump housing at least partially encircling said structure with an inner surface spaced from said structure to define a chamber for collecting lubricant expelled from said structure during rotation, wherein said inner surface includes an out-take for lubricant scavenging extending across a chordal arc in said chamber with an upstream first portion extending about said axis and veering away from said axis such that a radial distance between said axis and said first portion gently increases in a plane perpendicular to said axis for maintaining lubricant on said inner surface, and wherein said out-take also includes a downstream second portion facing said first portion and extending about said axis and veering away from said axis such that a radial distance between said axis and said second portion steeply increases to define a blunt wall in said plane opposing said first portion, and wherein said structure is operable to generate windage in said chamber and said out-take is exposed to said windage and promotes formation of an air vortex between said first and second portions.