Subject: ACIS Shift Report A4 Date: Mon, 26 Jul 1999 09:29:38 -0400 From: Shanil Virani --- ACIS Shift Report (A4) SHIFT NOTES: - Shanil relieved Paul at about 02:00 MET. - IPS Burn 2 was performed at 1999:207:01:46:44 (and lasted for 11 mins, 13 secs) with nominal performance. Performance for IPS-2 was similar to IPS-1 and compares well with PCADSIM predicts (FLT NOTE 75). New apogee 72068.68 km, perigee 3435.08 km, and is within 13 km of nominal values. - EPHIN Trigger test initiated at approximately 207:09:00. Radiation flag was successfully inserted and de-inserted by EPHIN. So the EPHIN now will be left on. It is fully operational and is taking REAL SCIENCE DATA! - switched to FMT2 @ 03:05:23 MET. FP Temp still at 118.9 DegC. Switched to FMT 4 @ 03:05:30 MET. - ACIS partial bakeout and LVV opening moved earlier in timeline to provide more time for FP cool-down prior to start of ESS maneuvers @ 208:11:00. (ACIS partial bakeout and LVV opening scheduled to begin at approximately 207:22:00.) - ESS #5 initiated @ ~06:20 MET. - ESS #7 (originally scheduled for 208:13:00) has been deleted and descending IRU Bias dwell extended to ~ 3hrs. ACIS TEMPERATURES: FP 1CRAT 1CRBT 1WRAT 1WRBT 1CBAT 1CBBT 02:23:47 -118.9 -127.9 -127.9 -82.0 -82.0 -62.4 -59.9 @70070 km 03:00:47 -127.9 -127.9 -82.0 -82.0 -62.4 -59.9 @68384 km 03:01:47 -127.9 -127.9 -82.0 -82.0 -62.4 -59.9 @65700 km 03:02:48 -127.9 -127.9 -82.0 -82.0 -62.4 -59.9 @62200 km 03:03:43 -127.9 -127.9 -82.0 -82.0 -62.4 -59.9 @59400 km 03:05:08 -127.9 -127.9 -82.0 -82.0 -62.4 -59.9 @50800 km 03:05:27 -118.9 -127.9 -127.9 -82.0 -82.0 -62.4 -59.9 @48700 km 03:06:26 -118.9 -127.9 -127.9 -82.0 -82.0 -62.4 -59.9 @42100 km 03:07:11 -118.9 -127.9 -127.9 -82.0 -82.0 -62.4 -59.9 @35900 km 03:08:03 -118.9 -125.5 -125.5 -82.0 -82.0 -62.4 -59.9 @27600 km !!Yes, they actually are changing!! 03:08:50 -118.9 -123.1 -123.1 -82.0 -82.0 -62.4 -59.9 @18700 km ACIS: Shanil Virani/Paul Plucinsky HRC: Adrian Roy SOT LEAD: Dan Schwartz ACA: RAC EPHIN: Eric Martin