6 research outputs found
Fabrication and endurance of air-cooled strut-supported turbine blades with struts cast of X-40 alloy
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NACA Research Memorandums
Memorandum presenting an investigation to devise an air-cooled turbine blade which eliminated the difficulties encountered with brazing in air-cooled-blade fabrication. Techniques were developed for casting air-cooled blades with a large number of relatively small cooling passages near the airfoil surface; two such blades of HS-21 material were operated in a turbojet engine modified for air cooling. Results regarding the heat-transfer characteristics, stress and durability results, and evaluation of cast-cored-blade potential are provided
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NACA Research Memorandums
Memorandum presenting the development of fabrication techniques to provide cast-cored turbine blades with hollow tip sections. Two types of modified cast-cored blades that provided an 11-percent weight reduction from a fully cast-cored blade and a 13-percent weight reduction from a standard uncooled blade were investigated in a turbojet engine modified for air-cooling. Results regarding the experimental heat-transfer, temperature comparison with other cooled-blade configurations, calculated and experimental blade temperatures, cooling-air pressure drop, and structural reliability are provided
Fabrication and endurance of air-cooled strut-supported turbine blades with struts cast of X-40 alloy /
"April 11, 1956."Includes bibliographical references (p. 18-19).Mode of access: Internet