Vane Assembly Spanwise Throat Angle for Duct Flow Quality

The patent applies local quality by varying the throat angle along the span of each vane. Specifically, the throat angle is minimized near the root and tip regions while maximized at the mid-span region. This localized variation in geometric parameters optimizes flow distribution at different radial positions, improving flow quality at the inner and outer diameters without requiring a complete redesign of the entire vane structure.

The patent implements parameter changes by modifying the throat angle distribution along the vane span. The throat angle parameter is systematically varied to achieve minimum values near the root and tip and maximum value at mid-span. This parameter optimization resolves the contradiction by improving flow quality while maintaining the compact low aspect ratio geometry.

The patent addresses flow distribution by applying local quality modifications specifically at the root and tip regions where throat angles are minimized. This targeted approach improves end wall region flow without requiring complex modifications across the entire vane structure, thus limiting the increase in overall complexity.

The patent employs dynamics by implementing a continuous variation of the throat angle along the span rather than discrete steps. This smooth transition from minimum at root/tip to maximum at mid-span creates an optimized flow path that improves distribution while maintaining manufacturability through a systematic geometric progression rather than abrupt changes.