e0nblue t1_j9jms51 wrote on February 22, 2023 at 1:18 PM Reply to comment by crazyhadron 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 The emoji version is better Permalink Parent 1
e0nblue t1_j6ihxwj wrote on January 30, 2023 at 4:03 PM Reply to comment by justoldme in My great-grandfather, Paris (circa 1930) posing with the carriage and the horses that would drown him in the Seine. by thoxo But that’s not important right now Permalink Parent 5
e0nblue t1_j9jms51 wrote
Reply to comment by crazyhadron 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
The emoji version is better