[Isocops] IBEX Orbit# 184 ATS's for postverif_asc and desc_apo and arc b

[Mark Tapley]

All,
	I have looked at the Orbit 184 post-LUT-load ATS's

IBEX_2012_298_o0184a_desc_apo_v001.txt

and

IBEX_2012_298_o0184a_postverif_asc_v001.txt

and

IBEX_2012_298_o0184b_v001.txt

	I don't understand or approve of the middle one yet. I 
approve the first (...desc_apo...) and last (...184b...).

	No constraint violations per .ccvr files:

IBEX_2012_298_o0184a_desc_apo_v001.ccvr
IBEX_2012_298_o0184b_v001.ccvr

	On the other hand, .ccvr file:

IBEX_2012_298_o0184a_postverif_asc_v001.ccvr

	correctly complains that we put the PL into HV operation and 
then execute a thruster maneuver.

	It would make sense to load ...desc_apo... alone if the PL 
will be left in HV science operations after the LUT upload.
	I can't see any circumstance in which it would make sense to 
load ...postverif_asc... as is; if the descending commands are not 
already up and we lose communication after loading it, the PL runs HV 
straight into the thruster maneuver, whereas if the descending 
commands in ...desc_apo... are already loaded, ...postviref_asc... 
duplicates most (but not all) of the SC commands. The latter file 
(...postverif...) also lacks this command:

   @FCT_SetScState housekeeping $TIME=2012/10:28:21:24:21

	which is present in the former file (...desc_apo...)

	I recommend a new version of ...postverif_asc... with no SC 
commands in it; operations would then do the LUT load, load and 
confirm ...desc_apo..., then load ...postverif_asc_v002..... during 
the 0130-0300 pass and confirm correct execution during the 0400-0500 
pass on the 26th.

	All PL ascending and descending operations in both files make 
sense with respect to each other and to 15 Re ascending and Apogee 
times from

IBEX_2012_298_o0184a_v001.oef

	and with respect to the contact times from

IBEX_Orbit184Contacts_v001.txt

	with the two LUT Upload contacts straddling the macro times 
in ...postverif_asc...  and -Lo ramp-up completing during the 2nd 
pass.

	Star tracker outage during ascending macros should not affect 
HV operations, but may affect quality of science data until the star 
tracker comes back online.

	No Moon in -LO FOV.

	No ground station contact commands in any load, to save command space.

	All inertial maneuvers match those in

IBEX_2012_298_o0184a_v001.txt

	which was already approved yesterday, (although the comment 
mis-labels the apogee maneuver PERIGEE:).

	No -Lo O-mode Commands.

	No overlap to orbit 183 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.

At 13:51 -0400 10/11/12, Ibex Mission Operations wrote:
>Guys,
>    Here are the planning and ATS files for Orbit# 184.
>Orbit# 184 will also include the LUT Upload.
>The ATS files have not been placed on the SFTP server so that Ken 
>can check them individually.

-- 
						- Mark     210-379-4635
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