Precision and Tolerance

Requirements for Precision Features and Tolerances

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The thermal performance and the fuel efficiencies of the floatwall panel design are critically dependent on the precise fabrication of the cooling pins.
- The high count and small size of the pins could only be produced economically by precision investment casting

Dimensional control and reproducibility are crucial to prevent gaps and air leakage around studs, between panels and the combustor shell, or between neighboring panels.

Machining costs can be reduced if the threads and flanges on the studs can be formed in the casting process.

These precision pin features and the tolerance requirements can be cost effectively achieved only by metalcasting.