ELEMENT OR BLADE OF FLUID OPERATION FOR TURBO MACHINE

摘要

PROBLEM TO BE SOLVED: To enable to practice inspection and repair after production with precision and reliability obtained at first production process. SOLUTION: The turbine blade 18 of gas turbine engine is provided with processing standards and connection part to fix. The shape of process standards and connection part is a truncated cone hollow 52 situated at shroud outside blade 18, ideally put at concentric position with piled-up lines of aero-foil 38. Blade 18 is provided pre-process state with hollow 52 having pre-process depth d1 and finished state with hollow 52 having finishing depth d2. Finishing depth d2, although smaller than pre-process depth d1, functions fully as shape for fixing at production process. Since usefulness of hollow 52 as standards and shape for fixing continues to exist after first production process, hollow 52 is useful for inspection and repair after production.