The U.S. Air Force’s Boeing X-37B spaceplane broke a record yesterday for the most amount of time in orbit around the Earth. But we still don’t know when the uncrewed plane is going to land or even what it’s doing up there. All of the details about the X-37B mission are classified. As of 6:43am ET today, the X-37B spaceplane’s fifth mission, dubbed the Orbital Test Vehicle (OTV-5), will have spent 719 days in orbit—just 11 days shy of a full two years circling the globe. The previous record was 717 days, 20 hours and 42 minutes, achieved just a few years earlier with OTV-4.
According to the Air Force, the X-37B Orbital Test Vehicle, or OTV, is an experimental test program to demonstrate technologies for a reliable, reusable, unmanned space test platform for the U.S. Air Force. The primary objectives of the X-37B are twofold; reusable spacecraft technologies for America’s future in space and operating experiments which can be returned to, and examined, on Earth. Upon command from the ground, the OTV autonomously re-enters the atmosphere, descends, and lands horizontally on a runway. The X-37B is the first vehicle since NASA’s Shuttle Orbiter with the ability to return experiments to Earth for further inspection and analysis, but with an on-orbit time of 270 days or greater, the X-37B can stay in space for much longer. Technologies being tested in the program include advanced guidance, navigation and control, thermal protection systems, avionics, high temperature structures and seals, conformal reusable insulation, lightweight electromechanical flight systems, advanced propulsion systems, advanced materials and autonomous orbital flight, reentry and landing.
Credits:
https://gizmodo.com/secret-u-s-air-force-spaceplane-breaks-record-with-719-1837605822
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