All,

Note: Off-pointing at arc B descending is 3.875 deg
          Off-pointing at orbit 326 apogee is 5.013 deg

I have looked at the orbit 325 recovery ATS,

IBEX_2016_119_o0325a_Recovery_v002.scr,


and I approve.


The only constraint violations in


IBEX_2016_119_o0325a_Recovery_v002.ccvr


are because we removed the


ACT_SetSpinPulseProtectEnable Enable


commands (2); the violations are expected.


The PL commands in the v002 ATS match those in the v003 STF,


IBEX_2016_119_o0325a_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_2016_119_o0325a_Recovery_v001.oef,


and as verified with ibex_orbit.


There is one star tracker outage.  The outage starts about 4 hours before 15 Re descending and runs for about 7 hours.  If the star tracker was working, some despinning might be required due to the outage.


There is one moon in Lo FOV session.  The ATS and OEF start times are the same and the ATS end time is about 20 minutes after that in the OEF.


The ground station command sequences are correct and the timing and bit rates match those in the contacts file,


IBEX_Orbit325_RecoveryContacts.txt,


for the two contacts in the ATS.  The SSR dump contact will be a blind acq.


The sun precession maneuver at perigee of orbit 324 left us pointing in safe directions for the orbit 325 arc A ascending and descending sequences:


ibex_rotate -o -r +36.066 -d +14.334 -w ibex-sun -t 2016/04:29:09:30:13

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.783175,+0.570389,+0.247574

 which is     R.A.  +36.066 Decl. +14.334

 missing      R.A.  +36.862 Decl. +14.567 (ibex-sun)

 error is     R.A.   +0.796 Decl.  +0.233

 for a total  0.805 deg


ibex_rotate -o -r +36.066 -d +14.334 -w ibex-sun -t 2016/05:03:10:35:29

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.783175,+0.570389,+0.247574

 which is     R.A.  +36.066 Decl. +14.334

 missing      R.A.  +40.860 Decl. +15.801 (ibex-sun)

 error is     R.A.   +4.794 Decl.  +1.467

 for a total  4.856 deg


The sun 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 -r +40.932 -d +15.823 -w ibex-sun -t 2016/05:03:12:23:37

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.726861,+0.630338,+0.272666

 which is     R.A.  +40.932 Decl. +15.823

 missing      R.A.  +40.932 Decl. +15.823 (ibex-sun)

 error is     R.A.   +0.000 Decl.  +0.000

 for a total  0.000 deg


ibex_rotate -o -r +40.932 -d +15.823 -w ibex-sun -t 2016/05:03:13:53:43

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.726861,+0.630338,+0.272666

 which is     R.A.  +40.932 Decl. +15.823

 missing      R.A.  +40.993 Decl. +15.842 (ibex-sun)

 error is     R.A.   +0.061 Decl.  +0.019

 for a total  0.062 deg


ibex_rotate -o -r +40.932 -d +15.823 -w ibex-sun -t 2016/05:07:14:52:02

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.726861,+0.630338,+0.272666

 which is     R.A.  +40.932 Decl. +15.823

 missing      R.A.  +44.781 Decl. +16.998 (ibex-sun)

 error is     R.A.   +3.849 Decl.  +1.175

 for a total  3.875 deg


The sun precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 326 apogee:


ibex_rotate -o -r +44.879 -d +17.024 -w ibex-sun -t 2016/05:07:17:28:01

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.677549,+0.674694,+0.292772

 which is     R.A.  +44.879 Decl. +17.024

 missing      R.A.  +44.879 Decl. +17.024 (ibex-sun)

 error is     R.A.   +0.000 Decl.  +0.000

 for a total  0.000 deg


ibex_rotate -o -r +44.879 -d +17.024 -w ibex-sun -t 2016-05-12T19:20:07.602Z

Quaternion    +0.000000,+0.000000,+0.000000,+0.000000

 points axis  +1.000000,+0.000000,+0.000000

 towards ECI  +0.677549,+0.674694,+0.292772

 which is     R.A.  +44.879 Decl. +17.024

 missing      R.A.  +49.959 Decl. +18.328 (ibex-sun)

 error is     R.A.   +5.080 Decl.  +1.304

 for a total  5.013 deg


No Lo O-mode.


There is no overlap with orbit 324 commands by manual inspection or by checking at


http://ibex.unh.edu/cgi-bin/ats.cgi.


Command Approval Checklist is attached.


Ken



From: "Wesley.Sheral" <sheral.wesley@orbitalatk.com>
To: "Wesley.Sheral" <sheral.wesley@orbitalatk.com>, "David Heirtzler" <dheirtzl@atlas.sr.unh.edu>, "IBEX-FDG" <IBEX.fdg@applieddefense.com>, "IBEXOPS" <IBEXOPS@gmail.com>, "ISOC" <isocops@lists.sr.unh.edu>, "Ken Fairchild" <fair-play@comcast.net>, "Lockwood.Robert" <robert.lockwood@orbitalatk.com>, "Michelle Reno" <mreno@swri.edu>, "Nigel Angold" <nigel.angold@nasa.gov>, "Paul Janzen" <paul.janzen@umontana.edu>, "Perry.Tim" <tim.perry@orbitalatk.com>, "Tyler.Ryan" <ryan.tyler@orbitalatk.com>
Sent: Sunday, April 17, 2016 11:41:17 AM
Subject: IBEX Orbit# 325 ATS Approval v002 (28 Apr 16 - 8 May 16)

Guys,

Here is v002 of the ATS.

Note the following changes

 

1.       Battery Balancing time

2.       No SSR_Dump/Tracking Contact commands

I have scheduled this contact as a Blind_acq which will allow us to turn on the transmitter earlier and have more SSR_Download time

 

If the star tracker is not fixed by perigee of Orbit# 324, this contact will be extended 30 minutes

 

Sheral  R. Wesley

IBEX Mission OPS

CRS/CYGNUS Mission Planning

Bldg. 2   Room 1337

Office (703) 406-5641

Cell (202) 236-0802

cid:image001.jpg@01D04F6C.5A1C97F0

 

From: Wesley.Sheral
Sent: Friday, April 15, 2016 1:55 PM
To: David Heirtzler; IBEX-FDG; IBEXOPS; ISOC; Ken Fairchild; Lockwood.Robert; Michelle Reno; Nigel Angold; Paul Janzen; Perry.Tim; Tyler.Ryan; Wesley.Sheral
Subject: IBEX Orbit# 325 ATS Approval (28 Apr 16 - 8 May 16)

 

Guys,

Here are the planning files and ATS for Orbit# 325.

Please respond to this email thread with your comments and approvals

Approvals are required before 18 Apr 16 @1700 UTC

 

Note the following:

1.       No Ascending BUS command for SetSpinPulseProtectEnable Enable

 

2.       Apogee and Perigee Sun Maneuvers

 

3.       Perigee Battery Balancing Commands

 

Orbit# 325  PERIGEE: Battery Balancing Commands

# 2016-05-08T02:08:39.614Z,Perigee,orbit:325

SetLongEclipseFlag TRUE $TIME=2016/05:08:01:00:00

SetLongEclipseFlag FALSE $TIME=2016/05:08:20:30:00

 

4.       Moon in Lo FOV Commands

# 2016-04-29T11:11:49.884Z,MoonInLoFovStart,orbit:325

# 2016-04-29T12:54:35.274Z,MoonInLoFovStop,orbit:325

 

5.       Command Load Constraint Violation Report

IBEX_2016_119_o0325a_Recovery_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 2016/04/29 07:44:07 UTC

IBX-CLC-016: No command to enable spin pulse protection was found after

             transition to science mode at 2016/05/03 13:23:45 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

cid:image001.jpg@01D04F6C.5A1C97F0

 




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