Which statement best describes a Lambert Conformal Conic projection used on aeronautical charts?

• A. A perspective cylindrical projection.
• B. A conformal conic map projection with straight-line meridians that meet at a common center beyond the map limits and with parallels of which two are standard that are arcs of circles intersecting the meridians at right angles.
• C. An equal-area projection.
• D. A polar stereographic projection.

Answer: (B)

Lambert Conformal Conic is a conformal conic projection used on aeronautical charts because it preserves local shapes while keeping distortion small over a broad mid-latitude region. In this projection, meridians are straight lines that converge toward a common center located beyond the map’s limits, reflecting the cone’s apex. Parallels appear as circular arcs that intersect the meridians at right angles. The two standard parallels are where the scale is true, and they are chosen so that distortion is minimized between them—ideal for flight routes that run through those latitudes.

This combination—conformal (angle-preserving), straight-line meridians converging toward a center, and two standard parallels that are circular arcs intersecting meridians at right angles—matches the description precisely. The other options refer to different projection types and don’t describe this conic, shape-preserving system.