IBEX_2017_036_o0356a_v001.scr,
and I approve.
The only constraint violations in
IBEX_2017_036_o0356a_v001.ccvr
are because we removed the
ACT_SetSpinPulseProtectEnable Enable
commands (2); the violations are expected.
The PL commands in the v001 ATS match those in the v003 STF,
IBEX_2017_036_o0356a_v003.stf.
Ascending and descending command sequences are consistent with each other and 15 Re ascending, the apogee maneuver time and 15 Re descending as determined from the OEF,
IBEX_2017_036_o0356a_v001.oef,
and as verified with ibex_orbit.
There is one star tracker outage. The outage starts about 17 hours before apogee and runs for almost 4 days. Some despinning may be required due to this outage.
There are no moon in Lo FOV sessions.
The ground station command sequences are correct and the timing and bit rates match those in the contacts file,
IBEX_Orbit356_Contacts.txt,
for all contacts (3).
We are doing battery cell balancing this orbit and the balancing commands are correct and offset by enough time from other commands.
The inertial maneuver at perigee of orbit 355 left us pointing in safe directions for the orbit 356 arc A ascending and descending sequences:
ibex_rotate -o -u 0.738917,-0.573494,-0.353703 -w ibex-sun -t 2017/02:06:11:03:17
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.738917,-0.573494,-0.353703
which is R.A. +322.184 Decl. -20.714
missing R.A. +320.096 Decl. -15.561 (ibex-sun)
error is R.A. +2.088 Decl. +5.153
for a total 5.522 deg
ibex_rotate -o -u 0.738917,-0.573494,-0.353703 -w ibex-sun -t 2017/02:09:17:30:51
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.738917,-0.573494,-0.353703
which is R.A. +322.184 Decl. -20.714
missing R.A. +323.390 Decl. -14.533 (ibex-sun)
error is R.A. +1.206 Decl. +6.181
for a total 6.287 deg
The inertial precession maneuver at apogee leaves us pointing in safe directions at the time of the maneuver and for arc B ascending and descending sequences:
ibex_rotate -o -u 0.747284,-0.605873,-0.272918 -w ibex-sun -t 2017/02:09:19:13:59
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.747284,-0.605873,-0.272918
which is R.A. +320.966 Decl. -15.838
missing R.A. +323.460 Decl. -14.509 (ibex-sun)
error is R.A. +2.494 Decl. +1.329
for a total 2.749 deg
ibex_rotate -o -u 0.747284,-0.605873,-0.272918 -w ibex-sun -t 2017/02:09:20:49:05
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.747284,-0.605873,-0.272918
which is R.A. +320.966 Decl. -15.838
missing R.A. +323.524 Decl. -14.487 (ibex-sun)
error is R.A. +2.558 Decl. +1.351
for a total 2.814 deg
ibex_rotate -o -u 0.747284,-0.605873,-0.272918 -w ibex-sun -t 2017/02:14:20:07:36
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.747284,-0.605873,-0.272918
which is R.A. +320.966 Decl. -15.838
missing R.A. +328.301 Decl. -12.810 (ibex-sun)
error is R.A. +7.335 Decl. +3.028
for a total 7.724 deg
The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 357 apogee:
ibex_rotate -o -u 0.838433,-0.453812,-0.301804 -w ibex-sun -t 2017/02:14:22:25:25
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.838433,-0.453812,-0.301804
which is R.A. +331.575 Decl. -17.566
missing R.A. +328.396 Decl. -12.778 (ibex-sun)
error is R.A. +3.179 Decl. +4.788
for a total 5.686 deg
ibex_rotate -o -u 0.838433,-0.453812,-0.301804 -w ibex-sun -t 2017-02-19T22:01:17.153Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.838433,-0.453812,-0.301804
which is R.A. +331.575 Decl. -17.566
missing R.A. +333.321 Decl. -11.041 (ibex-sun)
error is R.A. +1.746 Decl. +6.525
for a total 6.741 deg
Lo O-mode in arc A (plan 6, 7, 1, 1). O-mode timing matches that specified in the ISN season memo. There is more than 1 hour between the end of the ascending sequence and the start of O-mode and also more than an hour after O-mode ends and the start of the descending sequence.
There is no overlap with orbit 355 commands by manual inspection or by checking at
http://ibex.unh.edu/cgi-bin/ats.cgi.
Command Approval Checklist is attached.
Ken
Guys,
Here are the products and ATS for Orbit# 356.
Please respond to this email thread with you approvals and comments.
Approvals are required before 26 Jan 17 @ 1800 UTC
Note the following:
1. O-mode Start/Stop Commands
Lo O-mode (cross calibration)
2. Battery Balancing
# 2017-02-15T07:46:55.423Z,Perigee,orbit:356
SetLongEclipseFlag TRUE $TIME=2017/02:15:07:00:00
SetLongEclipseFlag FALSE $TIME=2017/02:15:08:30:00
3. Command Load Constraint Violation Report
IBEX_2017_036_o0356a_v001.scr
==========================
HARD CONSTRAINT VIOLATIONS
==========================
NO VIOLATIONS.
==========================
SOFT CONSTRAINT VIOLATIONS
==========================
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2017/02/06 09:30:53 UTC
IBX-CLC-016: No command to enable spin pulse protection was found after
transition to science mode at 2017/02/09 20:19:05 UTC
==============
OTHER MESSAGES
==============
NO MESSAGES.
Sheral R. Wesley
IBEX Mission OPS
CRS/CYGNUS Mission Planning
Bldg. 2 Room 1337
Office (703) 406-5641
Cell (202) 236-0802