The capabilities of the Lubricant System Interaction Simulator (LSIS) are demonstrated by presenting the results from a 1,000-h thermal oxidative degradation test of an MIL-PRF- 23699F lubricant. These results are compared with data from two in-service gas turbine engines using the same oil but under different conditions so that a range of operating regimes can be represented. The results showed that the viscosity changed, in accordance with the two engines, from 26.5 to 28.3 mm2/s. The change in total acid number was higher than expected, identifying areas for improvement. The antioxidant level reached 30%, which is between the 25 and 45% levels observed from the two engines. The antiwear and metal deactivator additives reached steady-state concentration levels of 95 and 20%, respectively. The results obtained from this test verified the significant potential of this facility as a reliable means of testing lubricants in an environment that is closely related to gas turbine lubrication system operating conditions.
|Number of pages||9|
|Publication status||Published - 2013|
Copyright 2013 Elsevier B.V., All rights reserved.
- Aviation Lubricants
- Gas Turbines
- Thermal Oxidative Degradation
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Surfaces and Interfaces
- Surfaces, Coatings and Films