[Isocops] IBEX Orbit# 112 ATS - approve

Mark Tapley mtapley at swri.edu
Mon Jan 24 12:08:36 EST 2011


All,
	I have looked at the Orbit 112 ATS v001 
(IBEX_2011_034_00_00_v001.txt) and I approve.

	The standard "PL mode unknown at the beginning" constraint 
violation is the only one. The .ccvr reports 4 "Removed Commands". 
The removed commands look like the commands that normally start each 
load, but are dated at the end of this load (the equivalent commands 
are present at the start of the load). I assume next load will 
include these commands in their proper location.

	The PL commands in the ATS v001 match the STF v002 file 
(IBEX_2011_034_01_51_v002.stf) per Ken's script (thanks!).

	PL ascending and descending operations make sense WRT 15 Re 
ascending and descending times.

	Moon in -Lo FOV PMT setback commands are concentric with the 
Forecast OEF MoonInLoFOV time and inside of it by irregular amounts, 
but within normal experience (no worse than ~4 hours).

	Ground station times match S/C times for all 3 contacts.

	Battery cell balancing is > 1 hour after burn (good). It is 
within 13 minutes after a downlink. Moving it later would make it 
easier to check, but I think it's OK here.

	The sun-pointing maneuver is inertial burn. Ibex_rotate says 
we are pointing in safe directions at burn time, at the following 15 
Re ascending, and at the following 15 Re descending:

[tapley at ena ~]$ ibex_rotate -o -u 
0.7897613171558862,-0.562889533960387,-0.24378768320417307 -w 
ibex-sun -t 2011/02:10:07:37:18
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.789761,-0.562890,-0.243788
  which is     R.A. +324.521 Decl. -14.110
  missing      R.A. +323.431 Decl. -14.500 (ibex-sun)
  error is     R.A.   +1.090 Decl.  +0.389
  for a total  1.126 deg
[tapley at ena ~]$ ibex_rotate -o -u 
0.7897613171558862,-0.562889533960387,-0.24378768320417307 -w 
ibex-sun -t 2011-02-10T22:46:15.850Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.789761,-0.562890,-0.243788
  which is     R.A. +324.521 Decl. -14.110
  missing      R.A. +324.080 Decl. -14.254 (ibex-sun)
  error is     R.A.   +0.441 Decl.  +0.144
  for a total  0.451 deg
[tapley at ena ~]$ ibex_rotate -o -u 
0.7897613171558862,-0.562889533960387,-0.24378768320417307 -w 
ibex-sun -t 2011-02-17T20:22:25.051Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.789761,-0.562890,-0.243788
  which is     R.A. +324.521 Decl. -14.110
  missing      R.A. +330.801 Decl. -11.966 (ibex-sun)
  error is     R.A.   +6.280 Decl.  +2.145
  for a total  6.482 deg

	O-mode coming up orbit 113.

At 8:32 PM -0500 1/21/11, Tim Perry wrote:
>All,
>     Attached are the planning files and the ATS for Orbit# 112. 
>Approval/comments are needed before COB Jan 25.

-- 
						- Mark     210-379-4635
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Large Asteroids headed toward planets
inhabited by beings that don't have
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