# equiangular spiral

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Related to equiangular spiral: Hyperbolic spiral, equiangular spiral antenna

## equiangular spiral

[¦ē·kwē¦aŋ·gyə·lər ′spī·rəl]
(mathematics)

## rhumb line

A rhumb line crosses all meridians at the same angle.
A line on the surface of the earth that cuts all meridians at the same angle. It appears as a curved line on the surface of a sphere. Only one such line may be drawn through any two points. Although this is not the shortest distance, the direction is constant. Normally, flights of less than 1,000 NM distance follow the rhumb-line track, whereas flights of a longer distance follow the great-circle track. Also called an equiangular spiral, loxodrome, loxodromic curve, or Mercator track.
References in periodicals archive ?
The plot shows that the Archimedean spiral, planar equiangular spiral and sinuous elements have much larger bandwidths than the Foursquare element.
The Archimedean spiral, planar equiangular spiral and sinuous achieve bandwidths greater than 8:1 [1,5] and the Foursquare's bandwidth is 1.
The planar equiangular spiral has a half-power beamwidth of 70[degrees], which is similar to the Archimedean spiral beamwidth of 75[degrees].

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