Impeller
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An impeller or impellor is "a rotor used to increase the pressure and flow of a fluid."[1]
In the context of early aero, this term appears to be a synonym for "propeller"; the key difference may be that an impeller might be used to move fluid around, not for propulsion.
References
Enclosing categories | rotor |
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Subcategories | Propeller |
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