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Russian Telecom Satellite Fails After Sudden Impact
Moscow, Russia (SPX) Mar 30, 2006 The Russian Satellite Communications Company's Express-AM11 telecommunications satellite suffered a sudden failure on Wednesday. "At present, providing services via the Express-AM11 satellite is impossible," the company said in a statement. Telemetry showed the failure, which occurred at 6:55 a.m. Moscow Time, was caused by "a sudden external impact on the spacecraft," RSCC said in a statement. The cause most probably was space garbage of unknown origin. The result was instantaneous depressurization of the satellite's thermal control system fluid circuit, followed by "a sudden outburst of the heat-carrying agent." The spacecraft subsequently lost its geostationary orientation and proper rotation. Although ground engineers were able to maintain marginal control, RSCC said the AM11 "started approaching the crucial values that can result in the total loss of the satellite." Along with the effective loss of the satellite, the company said the presence of space garbage most likely also renders its orbital slot unusable. Therefore engineers have engaged "organizational and technical measures aimed at removing the Express-AM11 from 96.5 East into space disposal orbit." RSCC has downloaded the satellite's backup capacities on the east orbital arc and as a result all Russian commercial TV and radio broadcasting has been restored. In addition, engineers have transferred all official communications channels to the Express-A2 (103 East), Express-AM2 (80 East) and Express-AM3 (140 East) satellites. Related Links Russian Satellite Communications Company
Raytheon VIIRS Development Unit Completes Key Tests
El Segundo CA (SPX) Mar 31, 2006Raytheon has successfully completed three key testing milestones on an advanced sensor engineering development unit (EDU) for the National Polar-orbiting Operational Environmental Satellite System (NPOESS). |
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