Composant comprising a percussion drilled shaped through hole providing Coanda effect and method of forming the same using laser percussion driling

摘要

The present application relates to a component with a percussion drilled shaped through hole (140) formed between a first surface (127) and a second surface (128) of a component and a method of forming the through hole (140). The through hole (140) is defined by a primary crater (142), a secondary crater (144), and a metering hole (146). The primary crater (142) is formed using laser percussion drilling in the first surface (127) of the component. The secondary crater (144) is formed using laser percussion drilling within the primary crater (142) and substantially offset from a centerline of the primary crater (144). The metering hole (146) is formed using laser percussion drilling within the secondary crater (144) and extending through the component to the second surface (128). The primary crater (142), the secondary crater (144), and the metering hole (146) define a Coand ramp and provide for the flow of fluid through the percussion drilled shaped through hole (140) according to the Coand effect.