A new type of air-cooled turbine-rotor-blade design based on the principle of submerging the load-carrying element in cooling air within a thin high-temperature shell which is attached to the load-carrying element by means of spot-welding was analytically evaluated using meas-ured sea-level-static engine operating conditions for a J33 turbojet engine. A typical spanwise effective gas temperature profile at the rated engine speed-was used. Temperatures at various significant stations in the blade cross section for several spanwise stations were calculated for three coolant-flow ratios.
展开▼
