Did
you know?
Not
all payloads are carried to orbit in
the Shuttle's cargo bay. In-cabin payloads are carried in
the Shuttle's middeck. Cargo bay payloads are typically large
payloads, such as satellites and Space Station modules, which
do not require a pressurized environment. In contrast, in-cabin
payloads are generally smaller, and are not usually designed
for an unpressurized environment like the cargo bay.
Workers in the Operations & Checkout
Bldg. look over theS0 truss.
The
Mobile Remote Servicer Base System (MBS) waits in the Space
Station Processing Facility for launch day.
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STS-110
Payloads
International Space Station Flight 8A
S0
Truss
The Starboard 0 (S0) truss segment is the first major element
of the International Space Station's enormous exterior framework.
The S0 Truss is 13.4 meters (44 feet) long and 4.6 meters (15
feet) wide and weighs 12,247 kilograms (27,000 pounds). It is
the center segment of 11 integrated trusses that will provide
the foundation for station subsystem hardware installation,
utility distribution, power generation, heat rejection and external
payload accommodations. The S0 truss acts as the junction from
which external utilities are routed to the pressurized modules
by means of EVA-deployed umbilicals.
The
S0 truss is going to the space station with a complement of
pre-integrated hardware to increase ISS functionality, including
the Mobile Transporter, the Trailing Umbilical System, the Portable
Work Platform, four Global Positioning System antennas, two
rate gyros, an Extravehicular Charged Particle Detection System
and umbilicals for U.S. on-orbit elements. Mission 8A also delivers
four Main Bus Switching Units, two Circuit Interrupt Devices,
three Crew and Equipment Translation Aid lights and the Airlock
Spur.
Mobile Transporter
The Mobile Transporter (MT) will become the first railroad in
space on the International Space Station during STS-110.
The
885-kilogram (1,950-pound) structure will travel along the rails
of the Integrated Truss Structure and, together with the Mobile
Base System, will provide the work platform for the station's
robotic arm. The transporter measures 274 centimeters (108 inches)
long, 261 centimeters (103 inches) wide and 97 centimeters (38
inches) high.
During
STS-110, the MT will undergo a series of diagnostic tests on
the S0 Truss after power and data cables are connected and launch
restraints are removed. The Mobile Base System will be installed
during STS-111 onto the MT to complete the Mobile Servicing
System, eventually giving Canadarm2 the capacity to move from
the U.S. Destiny Laboratory Module and travel the length of
the Integrated Truss Structure.
Live
Launch Coverage
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