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dynamic stall

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  • Dynamic stall — is a non linear unsteady aerodynamic effect that occurs when aerofoils rapidly change the angle of attack. The rapid change can cause a strong vortex to be shed from the leading edge of the aerofoil, and travel backwards above the wing. The… …   Wikipedia

  • Stall (flight) — For other uses, see stall. In fluid dynamics, a stall is a reduction in the lift coefficient generated by a foil as angle of attack increases. This occurs when the critical angle of attack of the foil is exceeded. The critical angle of attack is… …   Wikipedia

  • Compressor stall — A compressor stall is a situation of abnormal airflow resulting from a stall of the aerofoils within the compressor of a jet engine. Stall is found in dynamic compressors, particularly axial compressors, as used in jet engines and turbochargers… …   Wikipedia

  • Bumblebee — Taxobox name = Bombus image width = 200px image caption = male Bombus terrestris robbing nectar regnum = Animalia phylum = Arthropoda classis = Insecta ordo = Hymenoptera familia = Apidae subfamilia = Apinae tribus = Bombini genus = Bombus genus… …   Wikipedia

  • Bumble bee — For other uses, see Bumblebee (disambiguation) and Bombus (disambiguation). Bombus Bombus terrestris Scientific classification …   Wikipedia

  • Vertical axis wind turbine — Vertical axis wind turbines (VAWT) are a type of wind turbine where the main rotor shaft runs vertically. Among the advantages of this arrangement are that generators and gearboxes can be placed close to the ground, and that VAWT do not need to… …   Wikipedia

  • Economic Affairs — ▪ 2006 Introduction In 2005 rising U.S. deficits, tight monetary policies, and higher oil prices triggered by hurricane damage in the Gulf of Mexico were moderating influences on the world economy and on U.S. stock markets, but some other… …   Universalium

  • Wind turbine design — An example of a wind turbine, this 3 bladed turbine is the classic design of modern wind turbines Wind turbines History Design …   Wikipedia

  • airplane — /air playn /, n. 1. a heavier than air aircraft kept aloft by the upward thrust exerted by the passing air on its fixed wings and driven by propellers, jet propulsion, etc. 2. any similar heavier than air aircraft, as a glider or helicopter. Also …   Universalium

  • Centrifugal compressor — Centrifugal compressors, sometimes termed radial compressors, are a sub class of dynamic axisymmetric work absorbing turbomachinery.[1] Centrifugal impeller with a highly polished surface likely to improve performance …   Wikipedia

  • The Firm (Season 1) — Infobox Television show name = The Firm caption = Do They Have What It Takes? genre = Reality creator = Anne Low, Ng Ping Ho director = Ng Ping Ho developer = presenter = starring = Peter Pek , Chan Boon Yong, Zafrul Aziz voices = narrated =… …   Wikipedia

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