A Lambert conformal conic projection (LCC) is a conicmap projection, which is often used for aeronautical charts. In essence, the projection superimposes a cone over the sphere of the Earth, with two reference parallelssecant to the globe and intersecting it. This minimizes distortion from projecting a three dimensional surface to a two-dimensional surface. Distortion is least along the standard parallels, and increases further from the chosen parallels. As the name indicates, maps using this projection are conformal. Pilots favor these charts because a straight line drawn on a Lambert conformal conic projection consistently and properly shows the true distance between points. However aircraft will fly great circle routes which are the shortest distance between two points on the surface of a sphere. On a Lambert chart, this will generally be a curved line which must be separately calculated to ensure that correct intermediate waypoints are identified. Image File history File links No higher resolution available. ... Wikibooks has more on the topic of Conic section Types of conic sections Table of conics, Cyclopaedia, 1728 In mathematics, a conic section (or just conic) is a curve that can be formed by intersecting a cone (more precisely, a right circular conical surface) with a plane. ... The Mercator projection shows courses of constant bearing as straight lines. ... An aeronautical chart is a map designed to assist in navigation of aircraft, much as nautical charts do for watercraft, or a roadmap for drivers. ... This article is about the geometric object, for other uses see Cone. ... On the Earth, a circle of latitude is an imaginary east-west circle that connects all locations with a given latitude. ... A secant line of a curve is a line that intersects two or more points on the curve. ... In mathematics, a conformal map is a function which preserves angles. ... For other uses, see Aviator (disambiguation). ... For the Brisbane bus routes known collectively as the Great Circle Line (598 & 599), see the following list of Brisbane Transport routes A great circle on a sphere A great circle is a circle on the surface of a sphere that has the same diameter as the sphere, dividing the... A sphere is a symmetrical geometrical object. ...
Map projections are attempts to portray the surface of the earth or a portion of the earth on a flat surface.
Gall's stereographic cylindrical projection results from projecting the earth's surface from the equator onto a secant cylinder intersected by the globe at 45 degrees north and 45 degrees south.
A LambertConformalConicProjection was proposed with an origin at 31:10 North, 100:00 West and with standard parallels at 27:25 North and 34:55 North.
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