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effective aspect ratio

См. также в других словарях:

  • effective aspect ratio — That aspect ratio of airfoil of elliptical planform that, for same lift coefficient, has same induced drag coefficient as airfoil, or combination of airfoils in question. Aspect ratio is the ratio of the span of the wing to its chord and also can …   Aviation dictionary

  • Aspect ratio (image) — For other uses, see Aspect ratio (disambiguation). For computer screen topics, see display aspect ratio. For screen rotation and portrait mode, see page orientation. 4:3 redirects here. For the 4/3 digital camera/lens standard, see Four Thirds… …   Wikipedia

  • effective angle of attack — That part of a given angle of attack that lies between the chord of an airfoil and a line representing the resultant velocity of the disturbed flow. This angle is measured on a finite wing, but it has the same effective magnitude as that of an… …   Aviation dictionary

  • effective profile drag — The difference between the total wing drag and the induced drag of a wing with the same aspect ratio but elliptically loaded. Profile drag is the combined effect of form drag and skin friction and which increases as square of the speed and is… …   Aviation dictionary

  • Lift-to-drag ratio — In aerodynamics, the lift to drag ratio, or L/D ratio ( ell over dee in the US, ell dee in the UK), is the amount of lift generated by a wing or vehicle, divided by the drag it creates by moving through the air. A higher or more favorable L/D… …   Wikipedia

  • Cross-ratio — D is the harmonic conjugate of C with respect to A and B In geometry, the cross ratio, also called double ratio and anharmonic ratio, is a special number associated with an ordered quadruple of collinear points, particularly points on a… …   Wikipedia

  • Windowbox (film) — Windowboxing (also called the postage stamp effect ) occurs when the aspect ratio of a film is such that the letterbox effect and pillarbox effect occur simultaneously [ [http://www.jeremymoore.com/AdobePremiere/PAR Displays/ A visual reference… …   Wikipedia

  • Wingtip device — Infobox Aviation name = Wingtip devices caption = The winglet and red navigation light on the port (left) wing of a South African Airways Boeing 747 400Wingtip devices are usually intended to improve the efficiency of fixed wing aircraft.… …   Wikipedia

  • Variable geometry turbocharger — Variable geometry turbochargers (VGTs) are a family of turbochargers, usually designed to allow the effective aspect ratio (sometimes called A/R Ratio) of the turbo to be altered as conditions change. This is done because optimum aspect ratio at… …   Wikipedia

  • Panasonic Lumix DMC-GH1 — Panasonic DMC GH1K Type Micro Four Thirds System Sensor 17.3 × 13 mm Live MOS (in 4:3 aspect ratio) Maximum …   Wikipedia

  • Color Graphics Adapter — The 640×200 2 color mode with its default foreground color Arachne Internet suite. The Color Graphics Adapter (CGA), originally also called the Color/Graphics Adapter or IBM Color/Graphics Monitor Adapter,[1] introduced in 1981, was IBM s first… …   Wikipedia

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