Headlines > News > Cargo Transfers, Science Work Continue after Power Interruption

Cargo Transfers, Science Work Continue after Power Interruption

Published by Klaus Schmidt on Tue Apr 19, 2011 8:02 am via: NASA
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A remote power controller module (RPCM) failed Friday night temporarily shutting down power to the International Space Station’s S1 Truss. Power to the computer controlling thermal radiators along the starboard truss structure was shut down for awhile, but control was restored through another computer and station operations are continuing as normal. An RPCM is a circuit breaker that controls power and electricity among the various components of the station.

Mission controllers have postponed any troubleshooting actions until after the ISS Progress 41 (41P) resupply vehicle undocks Friday at 7:41 a.m. EDT. Trash and other discarded gear are being stowed inside the Progress 41 for its undocking and descent over the Pacific Ocean for a fiery disposal.

The “Johannes Kepler” Automated Transfer Vehicle (ATV2) is still being emptied of cargo that was delivered on Feb. 24. When all the supplies are removed, crew members will begin filling the ATV2 with trash and other disposable materials, and it will undock in June for destruction over the Pacific Ocean.

Flight Engineers Andrey Borisenko and Alexander Samokutyaev worked together on the Coulomb Crystal experiment. After setting up video and photography gear the duo gathered data about charged particles inside the microgravity environment of the space station.

Earlier, Flight Engineer Ron Garan joined Borisenko and Samokutyaev to conduct an emergency drill. Using the Crew Health Care System the trio simulated a medical emergency to refresh their memory of gear locations, equipment use and procedures.

Flight Engineer Cady Coleman participated in crew handover activities with Garan and ATV2 cargo transfers. Flight Engineer Paolo Nespoli assisted Coleman inside the ATV2 and set up software and hardware for a specialized camera, the ISSAC, or International Space Station Agriculture Camera. ISSAC is a multi-spectral camera that documents growing crops, rangeland, grasslands, forests, and wetlands in the northern Great Plains and Rocky Mountain regions of the United States.

Commander Dmitry Kondratyev updated the Inventory Management System documenting the location of gear and tools inside the station. Kondratyev also joined Samokutyaev for a test of the TORU, or Telerobotically Operated Rendezvous Unit. The TORU can be used to manually control Russian spacecraft during docking and undocking operations. They tested its operation between the station and the 41P.

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