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The EXPRESS program
consists of two separate systems: the EXPRESS rack for pressurized
payloads and the EXPRESS pallet for attached payloads. EXPRESS
is the acronym for EXpedite The PRocessing of Experiments
to Space Station.
EXPRESS Rack
 The EXPRESS Rack
utilizes an International Standard Payload Rack (ISPR) in
conjunction with other equipment to provide quick and simple
integration of user equipment into the ISPR. Each EXPRESS rack can
accommodate a broad range of payloads that meet standard interface
requirements.
The EXPRESS Rack
utilizes the ISPR in conjunction with additional structure and
electronic equipment designed to provide simple user equipment
interfaces. The EXPRESS rack provides accommodations for middeck
lockers and drawers. EXPRESS Rack capabilities are:
- EXPRESS Rack
middeck locations can accommodate 72 pounds of experiment
equipment, including container weight
- Each drawer
position accommodates 64 pounds including the weight of the
drawer.
- A total of 2 kW of
28 V dc power is provided to the payloads
- Each payload
position receives up to 500 W
- Interfaces include
RS422, ethernet, analog, discrete, and video
- Air cooling is
available at all payload locations
- Water cooling is
available at two payload locations
- Nitrogen supply
and waste gas vent will be available for one payload
location
External Payload
Capabilities
EXPRESS Pallet
 The EXPRESS program
consists of two separate systems: the EXPRESS rack for pressurized
payloads and the EXPRESS pallet for attached payloads.
The EXPRESS Pallet
provides rapid and simple attachment points for experiment
equipment outside the ISS. The EXPRESS Pallet has six robotically
replaceable adapters for user equipment.
The EXPRESS Pallet
provides power, command and data transmission. Crew operated
robotics also can be used for installation and removal of EXPRESS
Pallet user equipment.
Each EXPRESS Pallet
Provides:
- Accommodation of
external payloads up to 6000 lbs.
- Payload volumes of
~1.0 m3
- 2.5kW power
- Command and data
transmission services
- Fields of view in
the nadir, zenith, ram, wake, and Earth-limb directions.
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