back bearing

back bearing
i. The horizontal angle, measured clockwise from a datum, and observed from an aircraft for a point over which it has passed without an intervening alteration of a heading. It is the reciprocal of track.
ii. A bearing differing by 180°, or measured in the opposite direction from a given bearing. Also called a reciprocal bearing.
iii. The bearing at the opposite end of a line from the observer as measured from the true meridian at the opposite end of the line. The back bearing on all lines (other than north-south lines) differs from the bearing at the observer’s station by the amount of convergency of the meridians between the two points.
No change in back bearing in this case as the aircraft is flying directly south.

Aviation dictionary. 2014.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • bearing — n Bearing, deportment, demeanor, mien, port, presence are comparable when they denote the way in which or the quality by which a person outwardly manifests his personality and breeding. Bearing is the most general of these words; it may imply… …   New Dictionary of Synonyms

  • Back pain — Different regions (curvatures) of the vertebral column ICD 10 M54 ICD …   Wikipedia

  • Bearing rein — This article is about the part of a harness. For other uses, see riding aids. A modern harness with an overcheck rein, visible along the neck of the horse A bearing rein, known today as an overcheck or a checkrein, is a piece of horse tack that… …   Wikipedia

  • Bearing an Hourglass — infobox Book | name = Bearing An Hourglass title orig = translator = image caption = Paperback book cover author = Piers Anthony illustrator = cover artist = country = language = series = Incarnations of Immortality genre = Fantasy publisher =… …   Wikipedia

  • Back charge — Charge Charge, n. [F. charge, fr. charger to load. See {Charge}, v. t., and cf. {Cargo}, {Caricature}.] 1. A load or burder laid upon a person or thing. [1913 Webster] 2. A person or thing commited or intrusted to the care, custody, or management …   The Collaborative International Dictionary of English

  • Back to the Future Part III — Infobox Film name = Back to the Future Part III caption = Theatrical film poster director = Robert Zemeckis producer = Steven Spielberg writer = Robert Zemeckis Bob Gale starring = Michael J. Fox Christopher Lloyd Mary Steenburgen Thomas F.… …   Wikipedia

  • bearing puller — A tool used to remove bearings from a shaft by pulling them off. It has two or more arms which circle around the back side of the bearing and a center post which butts up against the end of the shaft. As the center post is screwed down, the arms… …   Dictionary of automotive terms

  • Back to School — Infobox Film name = Back to School caption = Back to School theatrical poster. director = Alan Metter producer = Chuck Russell writer = Steven Kampmann William Porter Peter Torokvei Harold Ramis starring = Rodney Dangerfield Sally Kellerman Burt… …   Wikipedia

  • bearing crush — The additional height which is purposely manufactured into each bearing half to ensure complete contact of the bearing back with the housing bore when the engine is assembled …   Dictionary of automotive terms

  • Back step — Step Step, n. [AS. st[ae]pe. See {Step}, v. i.] 1. An advance or movement made by one removal of the foot; a pace. [1913 Webster] 2. A rest, or one of a set of rests, for the foot in ascending or descending, as a stair, or a round of a ladder.… …   The Collaborative International Dictionary of English

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”