airscrew hub

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• Propeller — A propeller is essentially a type of fan which transmits power by converting rotational motion into thrust for propulsion of a vehicle such as an aircraft, ship, or submarine through a mass such as water or air, by rotating two or more twisted… …   Wikipedia

• propeller — /preuh pel euhr/, n. 1. a device having a revolving hub with radiating blades, for propelling an airplane, ship, etc. 2. a person or thing that propels. 3. the bladed rotor of a pump that drives the fluid axially. 4. a wind driven, usually three… …   Universalium

• helicopter — /hel i kop teuhr, hee li /, n. 1. any of a class of heavier than air craft that are lifted and sustained in the air horizontally by rotating wings or blades turning on vertical axes through power supplied by an engine. v.i. 2. to fly in a… …   Universalium

• Société Pour L'Aviation et ses Dérivés — SPAD S.VII SPAD (Société Pour L Aviation et ses Dérivés) was a French aircraft manufacturer between 1911 and 1921. Its SPAD S.XIII biplane was the most popular French fighter airplane in World War I. Contents …   Wikipedia

• aviation — I (New American Roget s College Thesaurus) Science of flight Nouns 1. (science of flight) aviation, flight, flying; navigation, aerial navigation; aeronautics, aerodynamics, aerodonetics, aerostatics, avionics, rocketry; aerial navigation,… …   English dictionary for students

• propellor — noun a mechanical device that rotates to push against air or water • Syn: ↑propeller • Derivationally related forms: ↑propel, ↑propel (for: ↑propeller) • Hypernyms: ↑ …   Useful english dictionary