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Elimination of Turbine Erosion in the T56 Turboprop Engine FREE

[+] Author Affiliations
J. G. Tomlinson, L. N. Montgomery

General Motors Corporation, Indianapolis, IN

Paper No. 65-WA/GTP-9, pp. V001T01A003; 7 pages
doi:10.1115/65-WA/GTP-9
From:
  • ASME 1965 Winter Annual Meeting: GT Papers
  • ASME 1965 Winter Annual Meeting: GT Papers
  • Chicago, Illinois, USA, November 7–11, 1965
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-8008-1
  • Copyright © 1965 by ASME

abstract

Turbine erosion was encountered in service operation with the T56 turboprop engine. Combustor carboning was suspected to be the cause of the problem. No direct evidence of carboning had been observed during development or in more than one million hours of service operation. An accelerated investigation was initiated to establish a quantitative measure of carbon particles in the combustor exhaust gases. A unique test method was developed to collect carbon particles on a component combustor test rig. Evaluations were conducted with the carbon collector to determine the effects of fuel nozzles, fuel type, operating conditions, and combustor configuration on carbon particle output. The combustor configuration was found to be the most important factor in the control of the problem. Combustor carboning was established as the cause of turbine erosion and a combustion liner modification was developed for service release. Service tests were conducted to correlate development test results and to verify that turbine erosion was eliminated with the modified combustion lines.

Copyright © 1965 by ASME
Topics: Engines , Erosion , Turbines
This article is only available in the PDF format.

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