Cooled, Laminated Radial Turbine Demonstration Program.
Abstract
A low-cost, high-temperature radial turbine has been developed that demonstrates the technology required to manufacture a small, cooled turbine using photoetched laminates bonded together to form a complete wheel. An advanced long-life and high-performance turbine design is described which uses an iterative optimization procedure to provide a balanced mechanical and aerodynamic design. The calculated bulk heat-transfer effectiveness was 0.54 with operation at 2300 F over a typical Army helicopter mission of 6000 cycles and with a design life of 5000 hours. Several wheels were manufactured from precision-rolled Astrology sheet. The mechanical integrity was demonstrated in a series of proof tests conducted in a whirlpit test facility including overspeed, growth, and burst tests, a stresscoat test, and a 6000-cycle test at overspeed conditions (119-percent design speed) to establish the low-cycle-fatigue characteristics of this rotor. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1981
- Accession Number
- ADA098120
Entities
People
- G. D. Large
- L. J. Meyer
- Miles J. Egan
- R. W. Vershure Jr.