Turbine blade units

摘要

The turbine has a ring of aerofoil blades mounted between inner and outer end blocks. The working fluid path between adjacent blades is closed in cross-section by the end walls formed by the end blocks. The blades and their associated end blocks are formed integrally and machined to provide fillets between the blade aerofoil surfaces and the end walls. The fillets have a radius in the range 0.15 to 0.3 of a throat dimension between adjacent blades. The fillets multiplying factor of the fillet radius lies in the range 0.2 to 0.25.