International Space Station Assembly Flight 6A
robotic arm is moved to the payload canister for STS-100.|
Cargo Bay Payloads:
Space Station Remote Manipulator System
Station Remote Manipulator System, or SSRMS, is the next generation
Canadarm and is a bigger, better, smarter version of the space
shuttle's robotic arm and was built by the Canadian Space Agency.
The new arm, which is also referred to as Canadarm2, is 17.6 meters
(57.7 feet) long when fully extended and has seven motorized joints.
This arm is capable of handling large payloads and assisting with
docking the space shuttle. The SSRMS is self-relocatable with
a Latching End Effector, so it can be attached to complementary
ports spread throughout the station's exterior surfaces.
Multi-Purpose Logistics Module
The Raffaello Multi-Purpose Logistics Module, which was built
by the Italian Space Agency (ASI), is the second of three such
pressurized modules that will serve as the International Space
Station's "moving vans", carrying laboratory racks filled with
equipment, experiments and supplies to and from the station aboard
the space shuttle.
The unpiloted, reusable logistics modules function as both a cargo
carrier and a space station module when they are flown. Mounted
in the space shuttle's cargo bay for launch and landing, they
are berthed to the station using the shuttle's robotic arm after
the shuttle has docked.
Of the 16 racks the module can carry, STS-100 will bring four
resupply stowage racks, four resupply stowage platforms and two
scientific experiment racks to the station.
two scientific experiment racks, EXPRESS Rack No. 1 and EXPRESS
Rack No. 2, will add additional science capability to the station.
EXPRESS stands for EXpedite the PRocessing of Experiments to the
Space Station. The EXPRESS Rack concept was developed to support
small payloads on orbit with a shortened ground integration period.
EXPRESS Rack No. 2 is the first station rack equipped with the
Active Rack Isolation System, or ARIS, which is designed to isolate
the experiment within the rack from vibrations occurring in the
rest of the space station.
The four Resupply Stowage Racks and four Resupply Stowage Platforms
contain equipment required for activation of the two EXPRESS racks
and the ARIS system, components to augment existing station systems,
spare parts for systems already on the station, and food and supplies
to support the crew.
After Raffaello is unloaded, used equipment and trash will be
transferred to it from the station for return to Earth inside
Endeavourís payload bay.
High Frequency Antenna
The Ultra High Frequency, or UHF, antenna will be attached to
the station's U.S. Laboratory Destiny by space walking Astronauts
Chris Hadfield and Scott Parazynski during the mission's first
on a 1.2-meter (4-foot) boom, is part of the UHF Communications
Subsystem of the station. It will interact with systems already
aboard the station, including the Space-to-Space Station Radio
transceivers. A second antenna will be delivered on STS-115/11A
Once in operation
the UHF subsystem will be used for space-to-space communication
-- voice, commands and telemetry for the space station. It can
support up to five users on the same frequency and provides:
- Two-way voice
communications between the station and space walkers,
the station and orbiter and between the Mission Control Center
in Houston and space walkers.
- Orbiter commanding
of critical station functions such as going to free
drift during undocking operations. Commands are encrypted for
security. That capability is to be used during Endeavour's undocking
- ISS transmission of
critical telemetry to the orbiter during undocking operations,
again beginning with STS-100 undocking.