1998-07-13

ISS Node 2 TCS Design and Development 981773

The resource Node 2 is a pressurized element of the ISS; it provides passageway among berthed habitable volumes, distributes electrical power and commands, collects and distributes thermal energy by rejecting waste heat to ISS radiators.
The Node 2 attached elements are the USL, the PMA2, the MPLM, the JEM, the APM, the CAM and the TS S0.
Figure 1 shows the present design of ISS.
Purpose of this paper is to describe the Node 2 thermal design, both for its active and passive sections, as resulting from the imposed requirements, design constraints and mission external environments.
The automatic controls, both for heaters and hydraulic actuators are briefly described.
At the end, the testing activities foreseen for the thermal control development and verification are also highlighted.

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