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Multi-unit pattern using vessel(s) and aircraft.



Related Terms

SEARCH PATTERN

A pattern according to which vessels and/or aircraft may conduct a coordinated search (the IMOSAR offers seven search patterns)

AREAL FEATURE

A topographic feature, such as sand, swamp, vegetation, etc., which extends over an area. It is represented on the published map or chart by a solid or screened color, by a prepared pattern of symbols, or by a delimiting line

BACK LOBE

The lobe of the radiation pattern of a directional antenna which makes an angle of approximatel

CONFIGURATION

  1. The position or disposition of various parts, or the figure or pattern so formed. 2. A geometric figure, usually consist- ing principally of points and connecting lines.

DECCA CHAIN

A group of associated stations of the Decca Navigator System. A Decca chain normally consists of one master and three slave stations. Each slave station is called by the color of associated pattern of hyperbolic lines as printed on the chart, i.e., red slave, green slave, purple slave.

DIRECTIONAL ANTENNA

An antenna designed so that the radiation pattern is largely concentrated in a single lobe.

ESTABLISHED DIRECTION OF TRAFFIC FLOW

A traffic flow pattern indicating the directional movement of traffic as established within a traffic separation scheme.

FLASHER

An electrical device which controls the characteristic of a lighted aid to navigation by regulating power to the lamp according to a certain pattern

GEOSTATIONARY SATELLITE

An earth satellite moving eastward in an equatorial, circular orbit at an altitude (approximately 35,900 kilometers) such that its period of revolution is exactly equal to and synchro- nous with the rotational period of the earth. Such a satellite will remain fixed over a point on the earth's equator. Although geostationary satellites are frequently called GEOSYNCHRONOUS or SYNCHRONOUS SATELLITES, the orbit of an eastward moving synchronous satellite must be equatorial if the satellite is to remain fixed over a point on the equator. Otherwise, the satellite moves daily in a figure eight pattern relative to the earth. Also called FIXED SATELLITE.

OIL TIP

Part of the oil gun which discharges the atomized fuel oil mixture into the furnace through multiple openings. The hole pattern in the tip has a great effect on flame size and shape.

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