Orbital ATK Successfully Launches
Minotaur IV Rocket Carrying ORS-5
Satellite for the U.S. Air Force
Orbital ATK announced its
Minotaur IV space launch vehicle
successfully launched and placed
into orbit the U.S. Air Force’s
Operationally Responsive Space-5
(ORS-5) spacecraft on August 26,
2017. The Minotaur IV launched from
Cape Canaveral Air Force Station’s
Space Launch Complex 46 (SLC-46),
which is operated under license by
Space Florida. This mission marks
the 26th consecutive successful
launch for the company’s Minotaur
product line.
The rocket’s first stage ignited at
2:04 a.m. (EDT). Approximately 28
minutes later, the Minotaur IV deployed
the ORS-5 satellite into its targeted
low inclination orbit 372 miles (599
kilometers) above the earth. From this
orbit, ORS-5 will deliver timely,
reliable and accurate space situational
awareness information to the United
States Strategic Command through the
Joint Space Operations Center.
“This was our first Minotaur launch
from Cape Canaveral Air Force Station,
demonstrating the rocket’s capability to
launch from all four major U.S.
spaceports,” said Rich Straka, Vice
President and General Manager of Orbital
ATK’s Launch Vehicles Division. “With a
perfect track record of 26 successful
launches, the Minotaur family has proven
to be a valuable and reliable asset for
the Department of Defense.”
The Minotaur family of launch
vehicles is based on
government-furnished Peacekeeper and
Minuteman rocket motors that Orbital ATK
has upgraded and integrated with modern
avionics and other subsystems to produce
an affordable launcher based on
flight-proven hardware. Minotaur rockets
have now launched from ranges in
California, Virginia, Alaska and
Florida. The vehicles are procured under
the OSP-3 contract administered by
Kirtland Air Force Base.
“Orbital ATK has launched nearly 100
space launch and strategic rockets for
the U.S. Air Force,” said Scott Lehr,
President of Orbital ATK’s Flight
Systems Group. “We’re proud to be a
partner they can count on.”
The ORS-5 launch was the sixth
Minotaur IV flight. The Minotaur IV is
capable of launching payloads up to
4,000 lbs. (or 1,800 kg.) to low-Earth
orbit. This mission’s Minotaur IV
configuration included three
decommissioned Peacekeeper stages, an
Orion 38 solid-fuel upper stage and an
additional Orion 38 insertion stage for
the payload. The Minotaur rockets are
manufactured at Orbital ATK’s facilities
in Chandler, Arizona; Vandenberg,
California; and Clearfield and Magna,
Utah.
The ORS-5 team is led by the Space
and Missile Systems Center’s
Operationally Responsive Space Office,
located at Kirtland Air Force Base, New
Mexico. The Massachusetts Institute of
Technology Lincoln Laboratory in
Lexington, Massachusetts, is the ORS-5
prime contractor. The 50th Space Wing at
Schriever AFB, Colorado Springs,
Colorado, operates the ORS-5 system.
The Air Force Space Command's Space
and Missile Systems Center, located at
Los Angeles Air Force Base, California,
is the Air Force's center of acquisition
excellence for acquiring and developing
military space systems such as ORS-5.
Its portfolio includes the Global
Positioning System, military satellite
communications, defense meteorological
satellites, space launch and range
systems, satellite control networks,
space based infrared systems and space
situational awareness capabilities.