What is Propeller?
[[Image:Propeller EP-3E 1500x2100.jpg|thumb|right|200px|Moving an EP-3E Orion's number four engine as part of pre-flight checks]] A '''propeller''' makes an [[airplane|aircraft]], [[ship]], or [[submarine]] in [[water]] or [[air]] go by making a big wind or a strong stream. It does this by turning two or more [[wing]]s very quick. The blades of a propeller act as rotating [[wing]]s, and produce force through application of both [[Bernoulli's principle]] and [[Newton's laws of motion|Newton's third law]], generating a difference in pressure between the forward and rear surfaces of the [[airfoil]]-shaped blades. == Other websites == {{commons|Propeller|Propeller}} *[http://www.aircraft-info.net/aircraft/propellor_aircraft/ Aircraft-Info.net - Propeller Aircraft] {{Webarchive|url=https://web.archive.org/web/20061105072146/http://www.aircraft-info.net/aircraft/propellor_aircraft/ |date=2006-11-05 }} *[http://www.titanic-titanic.com/titanic_propellers.shtml Titanic's Propellers] [[Category:Tools]] [[Category:Aerospace engineering]]