GAS TURBINE AND JET ENGINE FUELS
Abstract
Twelve-hour metal loss tests on the combined effects of fuel sulfur and ingested sea water (so-called 'black plague' corrosion conditions) on turbine inlet guide vanes have been completed. Five typical superalloys including Udimet 500, Waspalloy, Haynes Alloy 25, Hastelloy R-234 and Rene' 41 were evaluated. An essentially sulfur free base fuel consisting of 75 wt-% JP-5 boiling range isoparaffins plus 25 wt-% cumene was contaminated with 1 wt-% sulfur (as ditertiary butyl disulfide). Time was available for only a single comparative test (Udimet 500) on the isoparaffinic fuel with 1 per cent sulfur but no aromatic added. The results obtained show that (1) from the single set of comparative test results available the presence of 25% (max. specification limit) aromatics in the base fuel had no detrimental effect on metal durability at 2000 F; (2) ingestion of sea salt at the level of 15 ppm of the total mass throughput to the combustor (a rate realistic, for example, for helicopters hovering just above the ocean surface) dramatically increased metal loss rates for all the alloys above the rates observed during operation on a 1% sulfur fuel without sea salt ingestion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 05, 1963
- Accession Number
- AD0413833
Entities
People
- W. L. Streets