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Stall (fluid dynamics)

In fluid dynamics, a stall is a reduction in the lift coefficient generated by a foil as angle of attack exceeds its critical value. The critical angle of attack is typically about 15°, but it may vary significantly depending on the fluid, foil – including its shape, size, and finish – and Reynolds number.

History, Types & In accelerated and turning flight

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Overview

Formal definition

Variation of lift with angle of attack

Aerodynamic description

Stall speeds

In accelerated and turning flight

Types

Warning and safety devices

Flight beyond the stall

Spoilers

History

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Stall (fluid dynamics)

Nodes135
Edges134
Triples9
Avg. degree1.99
Density0.014815
Components1

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Important terminology

stall aircraft angle attack wing lift speed flight deep critical may also airspeed stalls stalling flow pilot wings higher control

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
severe turbulenceinstance ofor from less likely sources0.80text
a stick shakerinstance ofIf pre-stall warning followed by nose drop and limited wing drop are naturally not present or are deemed to be unacceptably marginal by an Airworthiness authority the stalling b…0.80text
pusherinstance ofIf pre-stall warning followed by nose drop and limited wing drop are naturally not present or are deemed to be unacceptably marginal by an Airworthiness authority the stalling b…0.80text
a Mitsubishi MU-2 is flying close to its stall speedinstance ofWhen an aircraft0.80text
the sudden application of full power may cause it to rollinstance ofWhen an aircraft0.80text
creating the same aerodynamic conditions that induce an accelerated stall in turning flight even if the pilot did not deliberately initiate a turninstance ofWhen an aircraft0.80text
a fenceinstance ofThe amount of boundary layer air flowing outboard can be reduced by generating vortices with a leading-edge device0.80text
notchinstance ofThe amount of boundary layer air flowing outboard can be reduced by generating vortices with a leading-edge device0.80text
saw tooth or a set of vortex generators behind the leading edgeinstance ofThe amount of boundary layer air flowing outboard can be reduced by generating vortices with a leading-edge device0.80text

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