Key Lubricant Performance Properties for Advanced Aircraft Engines
The scope of this document is limited to the lubrication system of a conceptual high performance aircraft turbine engine. This document will not present or disclose any specific design data leading to the specific formulation of an advance engine lubricant or that of an advanced engine. General trends are presented based upon current literature and observations of lubricant/engine experience.
Rationale: This report addresses the technology gaps between current AS5780 turbine oils and current trends for higher efficiency engines requiring higher temperature oils or oils with very specific properties. Identification of oil properties needs to be established very early in the engine conceptual design phase so as to influence the design itself. This is due to the long lead time to insert validated new lubricant technolgy into an engine development program cycle.