An Orbiter Processing Facility (OPF) was one of three hangars where U.S. space shuttle orbiters underwent maintenance between flights. All three such facilities, OPF-1, OPF-2 and OPF-3, were located at NASA's Kennedy Space Center in Florida at Launch Complex 39.
They were located west of the Vehicle Assembly Building, where the orbiter was mated with its External Tank and Solid Rocket Boosters before transport to the launch pad. OPF-1 and OPF-2 are connected with a low bay between them, while OPF-3 is across the street.
OPF-3 was previously called the Orbiter Maintenance & Refurbishment Facility (OMRF), but was upgraded to a fully functioning OPF.
Other articles related to "orbiter processing facility":
... Atlantis Atlantis Rolled out of OPF 2 for the final time on October 18, 2012 and is currently sat in the VAB awaiting its final journey to the Kennedy Space Center Visitor Complex, Scheduled for November 2, 2012 ... This marked the closing of OPF 2 for the use of an orbiter ...
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“Probability but no truth, facility but no freedomit is owing to these two fruits that the tree of knowledge cannot be confused with the tree of life.”
—Friedrich Nietzsche (18441900)