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The Air Force’s secret space plane sets a new record: 718 days in orbit

By Marc DeAngelis From engadget

defense.gov

But what the heck is it doing up there?

The U.S. Air Force’s X-37B space plane has been orbiting Earth since September 7th, 2017, crossing the 718 day mark and breaking its previous record of 717 days, 20 hours and 42 minutes in flight. While little is known about the classified X-37B, we do know that it’s able to stay in operation for such long stretches of time thanks in part to its solar panels and a lack of a human crew.

The Air Force began putting the space plane through its paces in 2010, with the first “Orbital Test Vehicle” (OTV) mission, which lasted 224 days. Each successive mission has lasted roughly 200 days longer than the previous flight, so the current mission, OTV-5, may stay in orbit for several more months. This trend of increasing endurance raises the question of why the Air Force needs a ship in orbit for what could turn out to be years at a time.The Daily Beast has reported that the X-37B is “designed to carry experimental payloads of sensors—like…high-tech cameras of various types, electronic sensors and ground-mapping radars.” Its ability to easily land means the ship could hypothetically bring a spy satellite into orbit for a testing period, then safely return it to Earth for any adjustments.

The OTV missions are classified, so the official descriptions of what the ship is doing up there are unsurprisingly vague. According to the craft’s public mission fact sheet, “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.” We’ve also heard rumors that the project is a test for Hall-effect propulsion, which uses ions to produce thrust.

For more on this story go to; https://www.engadget.com/2019/08/26/air-force-space-plane-new-record/

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