Water Model Tests on the Allison T56 Series 3 Combustion System,
Abstract
A modification was developed for the combustion system of the Allison T56 Series III turboprop engine which has resulted in an engine that has: * a lower smoke emission; * a lower specific fuel consumption; and * a combustor with potentially increased durability or life. In-service testing of the combustor has proven all the above advantages; however, the formation of hard carbon in the combustor and its subsequent release has resulted in increased erosion in the turbine section of the engine. Further development was undertaken to remedy this problem without affecting the overall gains offered by the modification. This report covers part of this work and, in particular, details flow field investigations made using a water flow model of the combustor liner. A comprehensive understanding of the flow mechanisms within the standard liner, the Low Smoke Modification liner (LSM), and proposed revisions of the LSM liner has now been obtained. It is anticipated that modifications arising from the present investigation will reduce, if not completely eliminate, hard carbon formation in the Revised LsM (RLSM) form.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1995
- Accession Number
- ADA299144
Entities
People
- Grant T. Mccabe
Organizations
- Defence Science and Technology Group