| 摘要 |
A turbine blade arrangement comprises turbine blades which are secured in adjacent positions to a rotor disc with a cavity defined between root segments and platform segments. A flow deflector within the cavity is provided as an insert such that through a recessed portion coolant flow .from a coolant path is constrained to remain adjacent to a rim surface. By constraining the coolant flow to remain adjacent to the surface greater cooling efficiency is achieved. Inner surfaces of the deflector may also be coated with low emissivity materials to reduce radiant heat flux transfer. The flow deflector supports a damper member in association with the platform segments.
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