Rtx Corporation

Markian Stephan Blazejowskyj

Steven J Bullied

Carl R Verner

Ryan C Breneman

Blake Matthew Wilmore

Kevin James Pappas

A casting shell has: a part cavity shaped for casting the part; a starter/selector cavity below and connected to the part cavity; a connector cavity between the starter/selector cavity and the part cavity; and a support cavity. The support cavity has: a post section; a first linking section linking the post section to the starter section of the starter/selector cavity; and a second linking section linking the post section to the connector cavity, the second linking section having a portion descending from the post section toward the connector cavity.

Casting shell with grain selector support

A casting method includes passing a metallic spacer through respective apertures in at least two ceramic cores to an installed condition wherein the spacer defines a minimum local separation between the at least two cores. The spacer has a shank and at least one arm extending from the shank. A sacrificial pattern material is molded over the metallic spacer and the at least two ceramic cores and then shelled and fired. An alloy is cast in the shell the shell is removed from the cast alloy.

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Wethersfield, CT, United States of America

Markian Stephan Blazejowskyj