longitudinal spacing

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• longitudinal separation — The longitudinal spacing of aircraft at the same altitude with the minimum distance expressed in units of time. Longitudinal separation is achieved by requiring aircraft to depart at a specified time, to lose time to arrive over a geographic… …   Aviation dictionary

• Required Navigation Performance — Bold textRequired Navigation Performance (RNP) is defined by ICAO as a statement of the navigation performance necessary for operation within a defined airspace . Part of a broader concept called Performance based Navigation, RNP is a method of… …   Wikipedia

• separation — i. The vertical, lateral, and longitudinal spacing between aircraft to achieve their safe and orderly movement in flight and while taking off and landing. Vertical or horizontal spacing must be provided between controlled IFR (instrument flight… …   Aviation dictionary

• average arrival interval — The average number of minutes of longitudinal spacing required between arriving aircraft landing at an airport, based on the acceptance rate of the runway(s) …   Aviation dictionary

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium

• Non-Radiative Dielectric waveguide (NRD) — Figure 1 Contents 1 Introduction 2 The dispersion relation in the NRD wave …   Wikipedia

• Permanent way — The permanent way means the physical elements of the railway line itself: generally the pairs of rails typically laid on sleepers embedded in ballast, intended to carry the ordinary trains of a railway. This page describes British practice and… …   Wikipedia

• MonoMetro — Industry Transport planning and system manufacture Founded 1997 Headquarters Headquarters: Blackwood, Wales Key people Gareth Pearce …   Wikipedia

• tree — treelike, adj. /tree/, n., v., treed, treeing. n. 1. a plant having a permanently woody main stem or trunk, ordinarily growing to a considerable height, and usually developing branches at some distance from the ground. 2. any of various shrubs,… …   Universalium

• Tree — /tree/, n. Sir Herbert Beerbohm /bear bohm/, (Herbert Beerbohm), 1853 1917, English actor and theater manager; brother of Max Beerbohm. * * * I Woody perennial plant. Most trees have a single self supporting trunk containing woody tissues, and in …   Universalium

• optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …   Universalium