1993-07-01

Space Station Freedom Distributed Avionics Air 932279

Avionics air utilizes a distributed system architecture to provide air cooling and air circulation for fire detection in non–habitable Space Station Freedom Fire Detection and Suppression (FDS) zones (racks, standoffs, and endcones). The distributed avionics air architecture utilizes dedicated hardware located within each zone to support the zone specific needs. The avionics air hardware is defined as two unique packages. The Avionics Air Assembly (AAA) supporting avionics air cooling includes a selectable speed fan, heat exchanger, smoke detector, and firmware controller. The Circulation Fan Assembly (CFA) supporting avionics air circulation includes a fixed speed fan and smoke detector.

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