The Rossi X-ray timing explorer (XTE) solar array anomaly

✍ Scribed by Edward M. Gaddy; Robert Kichak; Lee Niemeyer; Richard Stegeman

• Book ID: 101293163
• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 198 KB
• Volume: 5
• Category: Article
• ISSN: 1062-7995
• DOI: 10.1002/(sici)1099-159x(199711/12)5:6<385::aid-pip196>3.0.co;2-e

✦ Synopsis

The Rossi X-ray timing explorer (XTE) was launched on 30 December 1995. Shortly after launch, it became apparent that the solar array was not performing as expected. On leaving shadow, the array exhibited many discontinuous drops in current output. The size of each of these drops was consistent with the loss of part of a cell. The current decreases could not be caused by the loss of an entire cell or an entire circuit. This meant that the array had numerous cracked solar cells that opened as the array got warmer. Studies performed on the array's quali®cation panel suggest that the cell cracks may have been caused by extensive tap testing performed on the array and that these cracks were undetectable at room temperature using usual inspection methods.