Browse Publications Technical Papers 2003-01-2518
2003-07-07

International Space Station Internal Thermal Control System Cold Plate/Fluid-Stability Test - Two Year Update 2003-01-2518

Operation of the Internal Thermal Control System (ITCS) Cold Plate/Fluid-Stability Test Facility commenced on September 5, 2000. The facility was intended to provide advance indication of potential problems on board the International Space Station (ISS) and was designed:
  • To be materially similar to the flight ITCS.
  • To allow for monitoring during operation.
  • To run continuously for three years.
During the first two years of operation the conditions of the coolant and components were remarkably stable. During this same period of time, the conditions of the ISS ITCS significantly diverged from the desired state. Due to this divergence, the test facility has not been providing information useful for predicting the flight ITCS condition.
Results of the first two years are compared with flight conditions over the same time period, showing the similarities and divergences. To address the divergences, the test facility was modified slightly to more closely match the flight conditions, and to gain insight into the reasons for the divergence. Results of the modifications are discussed and provide insight into the development of the conditions on orbit.

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