Multimedia Gallery
The Astroinertial Navigation System helped this SR-71 Blackbird's crew set a coast-to-coast speed record of only 68 minutes.
The Lindbergh Hour Angle Watch eliminated a simple but troublesome calculation in celestial computations.
These watches were often more popular for their use as fashion accessories than their practical application as navigational tools.
Uses sidereal (star time), with a day of 23 hours, 56 minutes, 4.1 seconds long.
For use with radio time signals.
Lines of longitude are imaginary lines circling the globe through poles. Also called meridians, they are designated in degrees east of west of a starting reference line from 0° at the prime meridian to 180° on the opposite side of the globe.
This act authorized prizes—up to £20,000—for solving the longitude problem.
Length: 17 Minutes, 22 Seconds
The typically austere conditions present at many remote LORAN stations during World War II.
