Advanced Small Axial Turbine Technology.
Abstract
The objective of the program was to provide the advanced technolgoy small axial-flow turbine designer with empirically derived techniques to improve the accuracy of predicting losses, flow condition, velocity triangles and design point matching. The techniques addressed practical mechanical constraints typical of small, highly loaded cooled turbines, such as: (1) cooling system type and injection method or location, (2) blade fabrication, (3) wall thickness and tolerances, (4) engine integration requirements, (5) life, and (6) maintainability. An advanced turboshaft gas generator application established a realistic turbine environment. For the particular turbine application chosen, experimental data have been obtained for the effects of meridional nozzle constriction, inlet boundary layer, inlet velocity gradients, turbulence intensity, nozzle and rotor cooling, rotor-to-nozzle spacing, nozzle and rotor solidity and Mach number effects. Correlations were obtained and differences between cascade and full-stage test data established. An aerodynamic modeling system was formulated and verified, resulting in an improved turbine design.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1977
- Accession Number
- ADA042517
Entities
People
- C. L. Kosier
- C. Rogo
- G. B. Jasas
- H. F. Due Jr.
Organizations
- Teledyne Technologies