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Examples ofwave drag
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Furthermore, it is known that viscous effects, which are disregarded in the theories we examine, can influence thewavedrag.
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The latter term describes the energy loss orwavedragresulting from the fact that the ambient medium can support internal waves.
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The linearized approximation (thin-ship theory) is known t o yield results which are in poor agreement with the experimentalwavedragfor bodies of practical shape.
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These include stalling, high-lift devices including ' flexible ' variable-geometry systems, boundary-layer control, jet flaps, buffeting, supercritical aerofoils,wavedragin supersonic flight, blunt trailing edges and wing-body strakes.
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This accelerated region has two reasons for existence, one being associated with the inviscid orwavedrag, and the other with the viscous wakes and form drag.
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In discussing design methods, the conditions to be satisfied at low speeds are considered first, before going on to a discussion ofwavedragat supersonic speeds.
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At even higher speeds in the transonic,wavedragenters the picture.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In supersonic flow regimes,wavedragis commonly separated into two components, supersonic lift-dependentwavedragand supersonic volume-dependentwavedrag.
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This example is from Wikipedia and may be reused under a CC BY-SA license.This shock causes transonicwavedrag, and can induce flow separation behind it; both have negative effects on the airfoil's performance.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The larger fuselage size causes more skin friction drag andwavedrag.
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This example is from Wikipedia and may be reused under a CC BY-SA license.There are two effects in particular,wavedragand critical mach.
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This example is from Wikipedia and may be reused under a CC BY-SA license.This process is far more complicated than it sounds, due to the resistance the advancing wavefront encounters (similar towavedrag).
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This example is from Wikipedia and may be reused under a CC BY-SA license.In transonic flight,wavedragis commonly referred to as transonic compressibility drag.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The reason is that all propellers lose efficiency at high speed, due to an effect known aswavedragthat occurs just below supersonic speeds.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In 1947, studies into both problems led to the development of "perfect" shapes to reducewavedragas much as theoretically possible.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The other drag mechanisms, parasitic andwavedrag, have both constant components, totalling say, and dependent contributions that are often assumed to increase as.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The morewavedragis created, the more energy a swimmer must put out to make progress through the water.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Wavedragis created by every movement a swimmer makes in the water.
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This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.