Ground speed is the horizontal speed of an aircraft relative to the Earth’s surface.[1] It is vital for accurate navigation that the pilot has an estimate of the ground speed that will be achieved during each leg of a flight.
An aircraft diving vertically would have a ground speed of zero. Information displayed to passengers through the entertainment system of airline aircraft usually gives the aircraft ground speed rather than airspeed.
Ground speed can be determined by the vector sum of the aircraft's true airspeed and the current wind speed and direction; a headwind subtracts from the ground speed, while a tailwind adds to it. Winds at other angles to the heading will have components of either headwind or tailwind as well as a crosswind component.
An airspeed indicator indicates the aircraft's speed relative to the air mass. The air mass may be moving over the ground due to wind, and therefore some additional means to provide position over the ground is required. This might be through navigation using landmarks, radio aided position location, inertial navigation system, or GPS. When more advanced technology is unavailable, an E6B flight computer may be used to calculate ground speed. Ground speed radar can measure it directly.
Ground speed is quite different from airspeed. When an aircraft is airborne the ground speed does not determine when the aircraft will stall, and it doesn't influence the aircraft performance such as rate of climb.
ground, speed, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, june, 2019, . This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Ground speed news newspapers books scholar JSTOR June 2019 Learn how and when to remove this template message Ground speed is the horizontal speed of an aircraft relative to the Earth s surface 1 It is vital for accurate navigation that the pilot has an estimate of the ground speed that will be achieved during each leg of a flight An aircraft diving vertically would have a ground speed of zero Information displayed to passengers through the entertainment system of airline aircraft usually gives the aircraft ground speed rather than airspeed Ground speed can be determined by the vector sum of the aircraft s true airspeed and the current wind speed and direction a headwind subtracts from the ground speed while a tailwind adds to it Winds at other angles to the heading will have components of either headwind or tailwind as well as a crosswind component An airspeed indicator indicates the aircraft s speed relative to the air mass The air mass may be moving over the ground due to wind and therefore some additional means to provide position over the ground is required This might be through navigation using landmarks radio aided position location inertial navigation system or GPS When more advanced technology is unavailable an E6B flight computer may be used to calculate ground speed Ground speed radar can measure it directly Ground speed is quite different from airspeed When an aircraft is airborne the ground speed does not determine when the aircraft will stall and it doesn t influence the aircraft performance such as rate of climb See also editICAO recommendations on use of the International System of UnitsReferences edit Relative Velocity Ground Reference www grc nasa gov Retrieved 2019 06 08 Retrieved from https en wikipedia org w index php title Ground speed amp oldid 1153383868, wikipedia, wiki, book, books, library,
