5 hour launch window opens at 9:50 a.m. EDT.
SpaceX Youtube Stream: Orbital Test Vehicle 5 (OTV-5) Mission
Mission Overview via the Press Kit:
CBC: SpaceX launches U.S. military space plane on secret mission
SpaceX Youtube Stream: Orbital Test Vehicle 5 (OTV-5) Mission
Falcon 9 and OTV-5 are vertical on Pad 39A Weather is 50% favorable for todays ~5 launch window which opens at 9:50 a.m. EDT, 13:50 UTC.
SpaceX‏ (@SpaceX) Sep 7, 2017
SpaceX‏ (@SpaceX) Sep 7, 2017
Mission Overview via the Press Kit:
SpaceXs Falcon 9 rocket will launch the U.S. Air Forces X-37B Orbital Test Vehicle (OTV) on its fifth mission.
SpaceX is targeting launch of OTV-5 from Launch Complex 39A (LC-39A) at NASAs Kennedy Space Center in Florida. The primary launch window opens on Thursday, September 7 at 9:50 a.m. EDT or 13:50 UTC, and closes at 2:55 p.m. EDT or 18:55 UTC.
A backup launch window is available on Friday, September 8.
Following stage separation, Falcon 9s first stage will attempt to land at SpaceXs Landing Zone 1 (LZ-1) at Cape Canaveral Air Force Station, Florida.
CBC: SpaceX launches U.S. military space plane on secret mission
SpaceX is set to launch the U.S. Air Force's reusable robotic space plane today.
The X-37B Orbital Test Vehicle (OTV), built by Boeing, is an unmanned spacecraft that has spent up to 700 days orbiting the Earth on previous missions.
This is it's fifth mission, but the first aboard a SpaceX rocket.
The U.S. Air Force has provided few details about this or previous missions, saying only that the orbiters "perform risk reduction, experimentation and concept-of-operations development for reusable space vehicle technologies." The cost of the program is also classified.
The X-37B first flew in April 2010 and returned after eight months. A second mission launched in March 2011 and lasted 15 months, while a third took flight in December 2012 and returned after 22 months. The fourth launched in May 2015 and landed this past May after almost two years in orbit.
https://en.wikipedia.org/wiki/Boeing_X-37