AMSAT NEWS SERVICE BULLETIN 363.01 FROM AMSAT HQ SILVER SPRING, MD, DECEMBER 28, 2000 TO ALL RADIO AMATEURS BID: $ANS-363.01 AMSAT-DL Vice President Peter Guelzow, DB2OS, has provided ANS with a summary of recent command team actions regarding AO-40: The recovery efforts of AO-40 continue, mainly centered around housekeeping tasks designed to improve and stabilize the systems onboard the satellite. In addition, new software routines were successfully loaded that restored all Battery Charge Regulator functions and have resulted in a positive power budget with happy batteries. The command team is also pleased to report that the AO-40 Flight Software is now completely re-loaded (with the exception of D-block programming and WOD routines which will be done later). Command station G3RUH (James Miller) reported that commanding AO-40 on L-band frequencies was fairly easy, thus it appears the L-band receiver seems to be work nominally. A quick look at received telemetry instrumentation shows Helium pressure at essentially where it was following the first 400-N motor burn. Also, it appears that a few temperature and current sensors either failed and/or are showing incorrect values. The onboard sun sensors appear to be fine and are showing a solar angle that is near our predictions. The received spin rate telemetry is not accurate when compared to the actual spin as measured by the doppler wobbling of the S-band beacon. There appears to be a substantial spin increase. Clearly, more time is needed to analyze and understand what has happened here. The good news is that the spacecraft is now fully under control. During the next several days additional software will be loaded and the various uplinks will be verified before a command is sent to turn on the 2-meter again. Stay tuned to ANS for additional bulletins from AMSAT, the official source for information on AMSAT OSCAR-40. [ANS thanks AMSAT-DL Vice President Peter Guelzow, DB2OS, for this information] /EX ---- Via the ans mailing list at AMSAT.ORG courtesy of AMSAT-NA. To unsubscribe, send "unsubscribe ans" to Majordomo@amsat.org * Origin: ---=== RA9LO Station at MO27SC ===--- (2:5077/39) ---------------------------------------------------------------------- Alexander RZ6HGG Stavropol E-mail:email@example.com FidoNet: 2:5064/11.30 1 января 2001 г. 8:05:49
SB SAT @ AMSAT $ANS-363.01 AMSAT SPECIAL BULLETIN
Источник: Александр Ковалевский
Подписка на новостиСвежий выпуск каждый день! Ваш Email:
Обсуждение этой новости - Скажите свое мнение!