shamelessterminator
TIL The Lockheed SR-71 Blackbird used an Astro-inertial Navigation System to track Stars and determine its position and altitude. At Mach 3, the navigation system was accurate enough to limit drift to 1,000 feet (300 meters) off course.
en.wikipedia.orgSubmitted by shamelessterminator t3_118drfj in todayilearned
shamelessterminator OP t1_j9jtuaf wrote
Reply to comment by captaineegee in TIL The Lockheed SR-71 Blackbird used an Astro-inertial Navigation System to track Stars and determine its position and altitude. At Mach 3, the navigation system was accurate enough to limit drift to 1,000 feet (300 meters) off course. by shamelessterminator
A literal Rockstar. Amazing!