- groundspeed
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/grownd"speed'/, n.the speed of an aircraft with reference to the ground.Also, ground speed.[1915-20; GROUND1 + SPEED]
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Universalium. 2010.
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Universalium. 2010.
groundspeed — [ground′spēd΄] n. the speed of an aircraft in flight relative to the ground it passes over … English World dictionary
groundspeed — n. g.s., speed of a flying aircraft relative to the ground it crosses in a given period of time … English contemporary dictionary
groundspeed — ground′speed or ground′ speed n. aer. the speed of an aircraft with reference to the ground Compare airspeed • Etymology: 1915–20 … From formal English to slang
groundspeed — noun the speed of an aircraft relative to the ground • Hypernyms: ↑speed, ↑velocity … Useful english dictionary
Heading indicator — A heading indicator in a small aircraft. The heading indicator (also called an HI) is a flight instrument used in an aircraft to inform the pilot of the aircraft s heading. It is sometimes referred to by its older names, the directional gyro or… … Wikipedia
Instrument landing system — The Instrument Landing System (ILS) is a ground based instrument approach system that provides precision guidance to an aircraft approaching a runway, using a combination of radio signals and, in many cases, high intensity lighting arrays to… … Wikipedia
Dynamic soaring — is a flying technique used to gain energy by repeatedly crossing the boundary between air masses of significantly different velocity. Such zones of high wind gradient are generally found close to obstacles and close to the surface, so the… … Wikipedia
Airspeed — is the speed of an aircraft relative to the air. There are several different measures of airspeed: indicated airspeed, calibrated airspeed, equivalent airspeed and true airspeed.It is measured within the flying aircraft with an airspeed indicator … Wikipedia
Norden bombsight — The Norden bombsight at the Computer History Museum in Mountain View, California. This example does not have the associated autopilot attached … Wikipedia
Calibrated airspeed — (CAS) is the speed shown by a conventional airspeed indicator after correction for instrument error and position error. Most EFIS diplays also show CAS. At high speeds and altitudes, calibrated airspeed is further corrected for compressibility… … Wikipedia