variable-nozzle geometry

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• 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

• variable-geometry nozzle — A nozzle whose diameter can be changed. It is normally in the shape of a convergent nozzle at subsonic speeds and of a convergent divergent nozzle at supersonic speeds, or when a reheat is on. A variable nozzle permits the use of after burner… …   Aviation dictionary

• Propelling nozzle — A propelling nozzle is a component of a jet engine that is found at the tail of the engine that operates to form an exhaust jet and to maximise the use of the exhaust gas s energy throughout the engine so that the maximum overall thrust is… …   Wikipedia

• pop-open nozzle — A nozzle on a jet engine with a variable geometry outlet. This type of nozzle often is found on engines with afterburning. The nozzle generally is fully open (the largest dimension) at idle and progressively closes to the fully closed position at …   Aviation dictionary

• fixed geometry — i. An aircraft that does not have variable sweep wings. ii. An engine that does not have a variable inlet or nozzle …   Aviation dictionary

• Solid-fuel rocket — A solid rocket or a solid fuel rocket is a rocket with a motor that uses solid propellants (fuel/oxidizer). The earliest rockets were solid fueled, powered by gunpowder, used by the Chinese and Arabs in warfare as early as the 13th century. All… …   Wikipedia

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• List of Volkswagen Group diesel engines — The diesel engines listed below are currently in use today, by various marques of automobiles, and commercial vehicles, of the Volkswagen Group.Since the Volkswagen Group is European, the engine performance ratings are published using the… …   Wikipedia

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