[Isocops] IBEX Orbit# 129 ATS set - modifications needed.

[Mark Tapley]

All,
	I have looked at the IBEx Orbit 129 ATS's, and most are OK 
but I think there are problems with at least one.

IBEX_2011_Orbit129SpinDown_20June11_v001.txt

	Commands look OK to me. I note that we allowed only 6 minutes 
(Enable to Disable; 420 seconds Thrust-Time) for spin-up, but we 
allow 13 minutes (Enable to Disable; 839 seconds Thrust-Time) for 
spin-down. This seems curious to me, since the consequences of 
over-spin-down seem more severe.

	Otherwise, good.


IBEX_2011_Orbit129InertialManeuver_20June11_v002.txt

	First 5 commands probably should not be there. All have 
timestamps of 6/12 to 6/13, which dates have already passed (would 
these hang command execution if loaded?) and most are inappropriate 
for our S/C state now (CEU commands, FCT state to SCIENCE).

	Also, the inertial direction given is:

0.035827,  0.919219, 0.392112 = RA: 87.768, Dec:  23.086

	that is different from the vector I recommend to compensate 
for the bias in inertial maneuvers and to point at sun 2.5 days 
before perigee, which is:

+0.0542216, +0.918386, +0.391954 = RA: 86.62, Dec: 23.076

	it's also different from what's in any STF I have. I actually 
don't know where it came from, but I'd definitely like to know before 
approving.

	This file is not OK for the Inertial Maneuver.


IBEX_2011_21june11_BatteryBalCycles_v001.txt

	No eclipses in the .oef, all other ATS's so far don't include 
anything within an hour of the battery cycles - this one looks OK.

-------------------

	No PL commands in any of the 3 loads, so no sun-pointing 
worry (and the direction given for the inertial maneuver is easily 
close enough to the desired vector to be power-safe). No Moon-in-FOV 
concerns, no macros. I have not checked overlaps with previous ATS's. 
No normal checklist, see CHelle's spin-down checklist.


-- 
						- Mark     210-379-4635
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