Forced intake boundary
z₀(q) = hₐ · [1 − cos(6πq)] / 2
The phase comes from the same curvature field. The rise hₐ is solved so the filtered opening equals one 140 mm fan swept disk.
- Derived arch rise
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- Rise / height
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- Total geometric intake
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- Each arch
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- Effective intake / fan
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Fixed basis: 275 mm bottom mean width, 180 mm top mean width, 4 mm wall, 140 mm fan, 80% filter free area.