[Isocops] ATS for Orbit# 205 (4 - 13 May 2013)

Tim Perry Perry.Tim at orbital.com
Sat Apr 20 12:22:59 EDT 2013



All,
    I did receive 2 errors. The Second one was an easy one and this is
covered by the eclipse commands that we added for the medium eclipse. The
first one took a little bit time to understand. In Orbit 204 there was a
sun maneuver at Apogee.  The maneuver window was from 2013-04-29T21:34:03 -
2013-04-29T22:04:05 and the sun maneuver was from 2013-04-29T21:34:03 -
2013-04-29T21:49:03. So, in the OEF file for Orbit 204 these times were
correct. Now, when the new forecast STF file was used to generate the OEF
file for Orbit 205. The maneuver window had shifted by 1 minute and 31
seconds. In the Orbit 205 OEF file I found that the sun maneuver begin was
pulled from the history. But the sun maneuver end was not and I think that
this was because of where the new  maneuver window begin was placed in the
OEF file. The end time is the last time in the orbit 205 OEF file. MPS
tried to find the SunMvrEnd and it couldn't. The sun maneuver was
successful. So, I am comfortable with releasing this command load for
everyone to approve.

Please respond to this email thread with your comments/approvals.  All
comments/approvals are required before 22 Apr 13 @2100 UTC

==========================
HARD CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.

==========================
SOFT CONSTRAINT VIOLATIONS
==========================
IBX-CLC-001: Sun precession maneuver at 2013/04/29 21:34:03 UTC -
2013/05/18
             09:52:58 UTC (one endpoint unknown) overlaps eclipse at
2013/05/04
             19:45:49 UTC - 2013/05/04 20:52:24 UTC
IBX-CLC-015: Battery charge falls below minimum from 2013/05/04 20:39:49
UTC -
             2013/05/04 21:20:04 UTC. Lowest charge level is 7260.242983
             watt-minutes during this interval.

==============
OTHER MESSAGES
==============
NO MESSAGES.

STF files:
# Filename:            IBEX_2013_forecast_04mar13-18jun13_v001.stf
#Orbit: 204
# Sun pointing maneuver
2013-04-29T21:34:03.000Z|ManeuverWindowStart
2013-04-29T22:04:05.000Z|ManeuverWindowEnd

# Filename:            IBEX_2013_forecast_01apr13-24jul13_v001.stf
#Orbit: 204
# Sun pointing maneuver
2013-04-29T21:35:34.000Z|ManeuverWindowStart
2013-04-29T22:05:36.000Z|ManeuverWindowEnd

OEF Files:
# Filename:            IBEX_2013_115_o0204a_v001.oef
2013-04-29T21:34:03.000Z,ManeuverWindowStart
2013-04-29T21:34:03.000Z,SunMvrBegin,
2013-04-29T21:49:03.000Z,SunMvrEnd
2013-04-29T22:04:05.000Z,ManeuverWindowEnd,orbit:204

# Filename:            IBEX_2013_125_o0205a_v001.oef
2013-04-29T21:34:03.000Z,SunMvrBegin,
2013-04-29T21:35:34.000Z,ManeuverWindowStart,orbit:204
2013-04-29T22:05:36.000Z,ManeuverWindowEnd,orbit:204




(See attached file: IBEX_2013_125_o0205a_v001.ccvr)(See attached file:
IBEX_2013_125_o0205a_v001.oef)(See attached file:
IBEX_Orbit205Contacts.txt)(See attached file:
IBEX_2013_125_o0205a_v001.txt)

Timothy E. Perry
IBEX Mission Ops Lead
perry.tim at orbital.com
Office: (703) 406-5976
Cell:(301) 606-1430



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