History: Double-Intake Centrifugal Fan Impeller
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r194047 · current
- Created Double-Intake Centrifugal Fan Impeller (part): "A centrifugal impeller of about 450 to 500 mm with around 40 blades that draws air in from both sides and throws it out at the rim. It turns at roughly 2,200 to 2,750 rpm and makes the high air speed the cannon needs to carry spray to the tops of tall trees."