Which projection is used for air navigation?

• A. Lambert conformal projection
• B. Mercator projection
• C. Robinson projection
• D. Winkel Tripel projection

Answer: (A)

In air navigation, you want a map where directions stay true enough that a course can be drawn and followed accurately. A projection that preserves angles, or conformality, keeps bearings reliable for short segments, so a straight line on the chart corresponds closely to a constant compass direction on the ground or in the air. The Lambert conformal projection is a conic map designed to minimize distortion of shapes and angles over a region by using standard parallels, which makes it especially suitable for en route charts that cover a broad latitudinal belt. This combination of preserving local angles and reducing distortion where most flight routes lie is why it’s chosen for aeronautical navigation.

The other projections don’t fit as well for navigation. Mercator keeps angles but distorts distances increasingly with latitude, which can mislead distance and fuel planning on longer flights. Robinson and Winkel Tripel are general-purpose world maps that balance distortions for aesthetics and overall area/shape accuracy, but they don’t preserve bearings well enough for reliable navigation.