ground speed

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ground speed

[′grau̇nd ‚spēd]
(navigation)
Speed of an aircraft relative to the surface of the earth.

ground speed

ground speed
The horizontal component of the velocity of an aircraft relative to the ground. Ground speed is obtained by applying the effect of the prevalent wind velocity to the TAS (true air speed).
References in periodicals archive ?
Groundspeed and AOA were used to approximate our indicated airspeed.
Clair, Ford set the world record for groundspeed in his invention, in a race that would win him national celebrity.
There is also speculation that a sudden gust of wind could have increased the groundspeed of the plane on touch down or increased its airspeed while coming in to land.
2006); (3) for this type of soil, decrease the DSE application depth by increasing irrigator groundspeed, or improve irrigator design to increase application uniformity.
The slow groundspeed makes attacking very difficult so that's what we mean by a real leveller between two teams.
We set up the helicopter for a long, shallow straight-in approach and touched down on the runway at just under 30 knots groundspeed.
Early remotely piloted aircraft coverage consisted of two Air Force MQ-1s, and these missions necessitated careful planning as their slow groundspeed prevented rapid repositioning for new priorities.
The researchers found that the flies accelerated when the wind was pushing them from behind and decelerated when flying into a headwind and eventually recovered to maintain their original groundspeed.
And, in case you were wondering, they all say Groundspeed on the speedometer of Ford's flying machine.
Knocking out the automatic-approach checklist, we dialed in 50 feet and 20 knots of forward groundspeed and engaged the approach at two miles out.
We just sat in the cockpit watching the 450+ knot groundspeeds, keeping track of our position and fuel state, and monitoring autopilot performance.