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Evaluation of Gas Turbine Engine Lubricant Compatibility with Elastomer Slabs - Long Duration Test
- Aerospace Standard
- ARP6917
- Issued
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This test method provides procedures for exposing specimens of elastomer material (slab form) representative to those used in gas turbine engines to aviation lubricants under extended duration and engine relevant thermal conditions. For AS5780 requirements the time is at least 1800 hours and temperatures are 100 °C to 160 °C. Positive volume change is an indication of specimen swell and subsequent negative volume change is an indication of specimen deterioration, both properties are important in the evaluation of the compatibility of the lubricant with elastomers used in the construction of the gas turbine.
Rationale
This SAE Aerospace Recommended Practice is intended to determine the compatibility of aviation propulsion system grade elastomers with the aviation lubricants that they may be exposed to during service, such as AS5780 Gas Turbine Engine Lubricants. Properties of such elastomeric materials may deteriorate during exposure to aviation lubricants, thereby affecting their performance capabilities and potentially result in part failure. This test was initially developed as a Safran Aircraft Engine test used to approve new synthetic turbine oils.
Recommended Content
Topic
Data Sets - Support Documents
Title | Description | Download |
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Table 1 | Schedule of mass measurements and lubricant refreshes necessary to provide elastomer compatibility, fluorocarbon, 1800 hours data required in AS5780 table A2 |
Issuing Committee
E-34 Propulsion Lubricants Committee
This committee encompasses lubricants for gas turbine engines, as well as aircraft gear boxes and accessories. In addition, the work of the committee encompasses lubricants for privately owned jet or turbo propeller engines that operate on synthetic lubricants.
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