ARCTUS (the "Advanced Research and Conventional Technology Utilization Spacecraft") was a proposed design byAstrotech Corporation and developed with its partners Lockheed Martin, United Launch Alliance, Cimarron and Odyssey Space Research for arobotic spacecraft that would deliver cargo to theInternational Space Station, NASA COTS program.[1] ARCTUS was planned to be launched by anAtlas V rocket. Its pressurized cargo module would return to Earth and be recovered with amid-air retrieval operation.
The ARPO system is designed to take the ARCTUS vehicle from the ISS stay-out zone to the ISS capture box. ARCTUS will then be grappled by theSpace Station Remote Manipulator System (SSRMS) and berthed on an ISS port (nominally ISSHarmony Nadir port).[citation needed]
AvionicsThe brain of ARCTUS is derived from the flight provenXSS-11 avionics and consists of a spacecraft computer, communications and power systems, guidance and navigation system, and associated software. The majority of the avionics will be housed inside the PCM to allow for recovery and reuse for future missions.[citation needed]
Payload AccommodationsThe ARCTUS payload accommodations are based on SPACEHAB's 20 years of experience in deliveringNASA,ESA,JAXA,Roscosmos, and commercial cargo to space.[citation needed]
Environmental Control and Life Support System (ECLSS)The ECLSS will maintain the pressurized environment (temperature and pressure) within the cargo requirements during all flight phases, as well crew requirements, while docked. The system will utilize SPACEHAB and ISS heritage hardware and a design similar to other ISS modules in order to minimize crew training and procedure development.[citation needed]
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