| タイトル | Updates on HRF Payloads Operations in Columbus ATCS |
| 本文（外部サイト） | http://hdl.handle.net/2060/20120016617 |
| 著者（英） | DePalo, Savino; Wright, Bruce D.; Davenport, Robert; La,e Robert E.; Challis, Simon; Pietrafesa, Donata |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 2011-07-17 |
| 言語 | eng |
| 内容記述 | The NASA developed Human Research Facility 1 (HRF1) and Human Research Facility (HRF2) experiment racks have been operating in the European Space Agency (ESA) Columbus module of the International Space Station (ISS) since Summer 2008. The two racks are of the same design. Since the start of operations, unexpected pressure spikes were observed in the Columbus module's thermal-hydraulic system during the racks activation sequence. The root cause of these spikes was identified in the activation command sequence in the Rack Interface Controller (RIC), which controls the flow of thermal-hydraulic system fluid through the rack. A new Common RIC Software (CRS) release fixed the bug and was uploaded on both racks in late 2009. This paper gives a short introduction to the topic, describes the Columbus module countermeasures to mitigate the spikes, describes the ground validation test of the new software, and describes the flight checks performed before and after the final upload. Finally, the new on-orbit test designed to further simplify the racks hydraulic management is presented. |
| NASA分類 | Ground Support Systems and Facilities (Space) |
| レポートNO | M11-0605 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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