Mime-Version: 1.0 Date: Fri, 16 Jul 1999 11:11:35 -0400 To: mmachado@pop500.gsfc.nasa.gov, dmyers@pop500.gsfc.nasa.gov, ccazeau@pop500.gsfc.nasa.gov, jmaldona@pop500.gsfc.nasa.gov, bpickrel@pop500.gsfc.nasa.gov, dmalone@pop500.gsfc.nasa.gov, pdouglas@pop500.gsfc.nasa.gov, tafkhami@pop400.gsfc.nasa.gov, jameraul@pop400.gsfc.nasa.gov, gkinnama@pop500.gsfc.nasa.gov, tbevilacqua@hotmail.com, rsodano@pop500.gsfc.nasa.gov, whitec@thorin.atsc.allied.com, william.worrall@gsfc.nasa.gov, enace@pop500.gsfc.nasa.gov, ad@srl.caltech.edu, steves@srl.caltech.edu, msuarez@pop800.gsfc.nasa.gov, ngilotra@csc.com, btucker2@csc.com, cchang8@csc.com, csprouse@cscmail.csc.com, erc@cosmicra.gsfc.nasa.gov, carline.cazeau@alliedsignal.com From: Mike Machado Subject: ACE Weekly 7_15_99 Current spacecraft and ground system status is nominal. Executed successful attitude maneuver on Friday, July 9th. Maneuver Start Time=15:51:54 Maneuver End Time=15:57:09 Pre-Maneuver HGA = ___-2.43___________ Sun Angle = ___6.48__________ Post-Maneuver HGA = ____4.4____________ Sun Angle = __12.50__________ Current S/C range: __1,552,880______ km On July 11th, Performed Block Bin dumps (0-127) on Active CDH A only. 0 bytes miscompared. This validated Ground Reference Image with what is on the S/C. Team reviewed preliminary RCCA involving SWEPAM loss of ~4 days of science. Further analysis and revision is required. Anomalies: 7/9/99 AR# G99-0044 ISIS Software Crash. Experienced 15 minute telemetry drop. 7/12/99 Unable to generate GTAS plots before pass. Workstation AC1WS1 found to have two bad memory (RAM) modules after the pass. Called maintenance; meanwhile the workstation is still usable with reduced memory. However, this could cause problems using workstation for maneuver on 7/16/99. NOTE: ( Memory fixed 7/16/99 prior to maneuver). ========================================================================== Michael J. Machado Realtime Operations Supervisor/ Technical Lead Engineer Advanced Composition Explorer Flight Operations Team http://acefot1.gsfc.nasa.gov/ACE_MOC_HOME.html AlliedSignal Technical Services Corporation corp. email: machadm@thorin.atsc.allied.com phone: (301)286-7071 pager: (301)708-8272 fax: (301)286-0218 email: mmachado@pop500.gsfc.nasa.gov ==========================================================================