Fan

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Fan

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1. (a) Any vaned rotary device for producing a current or stream of air. (b) Specifically, a multivaned wheel or rotor used to take in air in a bypass engine or ducted-fan engine. It may be either a mere blower of a low-pressure compressor. See ducted fan. </dd>
2. A propeller, especially when the emphasis is upon its function of moving air rather than propelling. </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use