Design and Evaluation of a High Temperature Radial Turbine.
Quarterly technical summary rept. no. 12, 1 May-31 Jul 70,
PRATT AND WHITNEY AIRCRAFT WEST PALM BEACH FL FLORIDA RESEARCH AND DEVELOPMEN T CENTER
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The objective of the contract is to develop the technology for high temperature radial turbines to a level that will permit a potential small engine manufacturer to make a choice between the radial and the axial turbine. An integral cored rotor was spun to failure, which occurred at a 3 higher speed than predicted. The final rotor bicast was delivered by the casting vendor and is being prepared for use in Turbine Build Four. Turbine Build Three was tested for ten hours at various conditions up to 1200F TIT, 50,000 rpm and 4.45 pressure ratio. Testing was terminated by an emergency shutdown due to a failure of the facility air supply resulting in overtemperature of the turbine. Test data indicate turbine efficiencies approximately 4 to 7.5 points lower than predicted. Author
- Jet and Gas Turbine Engines