Bladder Bond Fixture for Rotor Blade Hole Pattern Concentricity

The patent applies preliminary action by creating a template from the original component that captures the precise hole pattern geometry before the component wears or is replaced. This template serves as a reusable reference that preserves the original concentricity relationships, allowing replacement components to be accurately aligned without requiring the original component to still be in service. The template is created by projecting the hole pattern onto a durable surface, establishing the geometric relationships in advance for future use during maintenance operations.

The patent applies copying by creating a physical template that replicates the exact hole pattern geometry of the original component. This template serves as a master copy that can be used repeatedly to transfer the precise hole positions to replacement components. By copying the geometric relationships rather than relying on direct measurement or alignment during each replacement operation, the system ensures that hole pattern concentricity and positioning accuracy are maintained across multiple replacement cycles, thereby preserving structural integrity and reliable performance.