Toward the Expansion of Low-Pressure-Turbine Airfoil Design Space (Postprint)
Abstract
Future engine requirements, including high-altitude flight of unmanned air vehicles as well as a movement to reduce engine cost and weight, are challenging the current state of the art in low-pressure-turbine airfoil design. These new requirements present low-Reynolds number challenges as well as the need for high-performance high-lift design concepts. Here we report on an effort to expand the relatively well established design space for low-pressure turbine airfoils. Analytical and experimental mid-span performance data and loadings are presented for four new airfoil designs based on the Pack B velocity triangles. The new designs represent a systematic expansion of low-pressure turbine airfoil design space through the application of high-lift design concepts for front- and aft-loaded airfoils. Taken holistically, the results presented here demonstrate accurate transition modeling provides a reliable method to develop optimized, very high-lift airfoil designs.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 2008
- Accession Number
- ADA482053
Entities
People
- D. C. Knezevici
- E. A. Grover
- I. Popovic
- J. P. Clark
- P. J. Koch
- R. Sondergaard
- S. A. Sjolander
- T. J. Praisner
Organizations
- United Technologies Corporation