[Isocops] IBEX Orbit# 182 ATS v001 (Hi/CEU) and v002 (Lo) - approve
Mark Tapley
mtapley at swri.edu
Tue Sep 25 16:58:50 EDT 2012
All,
I have looked at the Orbit 182 ATS v001 (No -Lo commands)
IBEX_2012_280_o0182a_v001.txt
and the corresponding -Lo command ATS v002
IBEX_2012_280_o0182a_Lo_Commands_v002.txt
and I approve.
No constraint violations per .ccvr file:
IBEX_2012_280_o0182a_v001.ccvr
-Lo-only load .ccvr has the expected violations due to lack
of -Hi and CEU commands in the -Lo alone load.
The PL commands in the ATS v001 match the STF v002
IBEX_2012_280_o0182a_v002.stf
and the -Lo commands in the ATS v002 match the -Lo STF v001
IBEX_2012_280_o0182a_LoCommanding_v001.stf
per Ken's script (thanks!).
PL ascending and descending operations (-Hi/CEU and -Lo) make
sense with respect to 15 Re ascending, Apogee, and 15 Re descending
times from
IBEX_2012_280_o0182a_v001.oef
Star tracker outage on ascending arc ends before 15 Re
ascending. Star tracker outage near perigee starts 9 hours after
inertial maneuver is complete. No consequence from outages.
Moon in -LO FOV for 1 day during ascending arc. -Lo commands
this load include PMT set-back similar to times in .oef, late by 6
hours at start and 4 hours at end for a 21-hour outage.
No ground station contact commands in either load, to save
command space. Contacts file shows contacts at reasonable times.
Battery cell balancing this orbit. Skipped last orbit, should
do again next orbit. Star Tracker outage during balancing will not
affect it.
Inertial maneuver at the end of orbit 181 left us pointing in
a safe direction for ascending and descending macros during first
half of orbit:
[tapley at ena ~]$ ibex_rotate -o -u -0.980255,-0.175987,-0.090163 -w
ibex-sun -t 2012/10:07:07:39:49
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.980255,-0.175987,-0.090163
which is R.A. +190.178 Decl. -5.173
missing R.A. +193.105 Decl. -5.611 (ibex-sun)
error is R.A. +2.927 Decl. +0.438
for a total 2.947 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.980255,-0.175987,-0.090163 -w
ibex-sun -t 2012/10:10:22:02:35
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.980255,-0.175987,-0.090163
which is R.A. +190.178 Decl. -5.173
missing R.A. +196.338 Decl. -6.988 (ibex-sun)
error is R.A. +6.160 Decl. +1.815
for a total 6.388 deg
Inertial maneuver at apogee leaves us pointing in a safe
direction at maneuver and at following Ascending and Descending
Macros.
[tapley at ena ~]$ ibex_rotate -o -u -0.96195,-0.24543,-0.120068 -w
ibex-sun -t 2012/10:10:23:46:23
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.961950,-0.245430,-0.120068
which is R.A. +194.313 Decl. -6.896
missing R.A. +196.405 Decl. -7.016 (ibex-sun)
error is R.A. +2.092 Decl. +0.120
for a total 2.080 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.96195,-0.24543,-0.120068 -w
ibex-sun -t 2012/10:11:01:21:29
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.961950,-0.245430,-0.120068
which is R.A. +194.313 Decl. -6.896
missing R.A. +196.466 Decl. -7.041 (ibex-sun)
error is R.A. +2.153 Decl. +0.145
for a total 2.142 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.96195,-0.24543,-0.120068 -w
ibex-sun -t 2012/10:15:12:00:43
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.961950,-0.245430,-0.120068
which is R.A. +194.313 Decl. -6.896
missing R.A. +200.699 Decl. -8.716 (ibex-sun)
error is R.A. +6.386 Decl. +1.820
for a total 6.583 deg
Inertial maneuver at perigee leaves us pointing in a safe
direction at maneuver and at following Apogee.
[tapley at ena ~]$ ibex_rotate -o -u -0.936985,-0.315276,-0.150536 -w
ibex-sun -t 2012/10:15:19:29:36
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.936985,-0.315276,-0.150536
which is R.A. +198.597 Decl. -8.658
missing R.A. +200.994 Decl. -8.825 (ibex-sun)
error is R.A. +2.397 Decl. +0.167
for a total 2.375 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.936985,-0.315276,-0.150536 -w
ibex-sun -t 2012-10-20T11:00:16.432Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.936985,-0.315276,-0.150536
which is R.A. +198.597 Decl. -8.658
missing R.A. +205.223 Decl. -10.503 (ibex-sun)
error is R.A. +6.626 Decl. +1.845
for a total 6.789 deg
No -Lo O-mode Commands.
No overlap to orbit 181 commands apparent by manual check;
http://ibex.unh.edu/cgi-bin/ats.cgi has a lot of commands interleaved
among various loads and is not usable for confirming no-overlap right
now.
Command Approval Checklists attached.
-Hi Neg collimator voltage back to operating at nominal voltage.
At 9:44 -0400 9/25/12, Ibex Mission Operations wrote:
>Guys,
> Here are the planning files and ATS for Orbit# 182. The commands
>for IBEX_Lo will be contained within another ATS
>All approvals/comments are required before 27 Sept 12 @0700 UTC
>
>
>1. No contact commands within the ATS
>Orbit# 182
>IBEX,USHI01,ADD,10/07/12,281,02:00:00,10/07/12,281,02:35:00,LAHO 40K
>IBEX Orbit# 181 Tracking Contact (11 Asc)
>IBEX,USHI01,ADD,10/12/12,286,02:30:00,10/12/12,286,03:05:00,,LAHO 2K
>IBEX ORbit# 182 Apogee Contact (46 Desc)
>IBEX,USHI01,ADD,10/15/12,289,15:00:00,10/15/12,289,16:00:00,,LAHO
>320K IBEX Orbit# 182 SSR_Dump/Tracking Contact (12 Desc)
>2. Battery Balancing during PERIGEE
>3. IBEX Command Violations:
At 10:49 -0400 9/25/12, Ibex Mission Operations wrote:
>Guys,
> Here is V002 of the IBEX_Lo Commands ATS. I removed the comments
>on the IBEX_Lo Descending commands and commented out the inertial
>maneuver commands
--
- Mark 210-379-4635
-----------------------------------------------------------------------
Large Asteroids headed toward planets
inhabited by beings that don't have
technology adequate to stop them:
Think of it as Evolution in Fast-Forward.
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