Cycle 15 LRP Construction and Characteristics

July 21, 2006

Planning the Cycle• HST executed ~73 est_orbits/wk during the 2-gyro period of Cycle 14.

• On July 21, 2006, (the 219 calendar is beginning to build), 3730 orbits had plan windows past 06.219.

• At 73 est_orbs/wk, this would imply 51 full weeks of planning 330 est_orbs of tail.

• However there are ~ 500 orbits of unplanned visits, so the true tail is ~830 est_orbs.

> integ baselined-lrp 07.180 08.091Summary integration report 275 days in date range [07.180 to 08.091)--Date Range- ___Orbs/D___ ___Free/D___ ___Hide/D___ ___E-Fr/D___ ___E-Hi/D___ ___Oflo/D___07.180 08.091 849.1 3.08 437.9 1.59 292.1 1.06 558.9 2.03 171.2 0.62 120.9 0.44

HOPR ~ 70 orbitsDD ~ 70 orbitsTOO ~200 orbitsCAL ~175 orbits

Approximate Unplanneds:

RA Fights in Cycle 15

UDF + SHOES, et.al.

Coma + SHOES, et.al.10816 + 10915 + 10818 + 10505 + 10794

SHOES, et.al.

Plot does not show 10862, Saturn campaign at ~ 140 degrees.

An initial Cycle LRP Build with all possible packed prior to 07.267

From 06.289-07.071,

Classical resources show: • 10.34 orbits/day, and

• 8.34 effective-SAA-free / day

• (5.5 explicit SAA-free/day)

> integ res_C15B01T09L02.rpt 06.289 07.071Summary integration report over 147 days in date range [06.289 to 07.071)--Date Range- ___Orbs/D___ ___Free/D___ ___Hide/D___ ___E-Fr/D___ ___E-Hi/D___ ___Oflo/D___06.289 07.071 1520.2 10.34 807.9 5.50 712.3 4.85 1239.3 8.43 280.8 1.91 431.3 2.93

Validator also implied a problem on the initial ‘packed’ Cycle Build

> integ res_VC15B01T09L03.rpt 06.289 07.071Summary integration report on resources over 147 days in date range [06.289 to 07.071)--Date Range- ___Orbs/D___ ___Free/D___ ___Hide/D___ ___E-Fr/D___ ___E-Hi/D___ ___Oflo/D___06.289 07.071 1469.0 9.99 841.0 5.72 628.0 4.27 1005.0 6.84 464.0 3.16 164.0 1.12

From 06.289-07.071,

Classical resources show:9.99 orbits/day and 6.84 effective-SAA-free per day.

Even with optimistic “validation”, the winter is 130-300 orbits oversubscribed.

After Correcting Winter Oversubscription

> integ baselined-lrp 06.289 07.071Summary integration report over 147 days in date range [06.289 to 07.071)--Date Range- ___Orbs/D___ ___Free/D___ ___Hide/D___ ___E-Fr/D___ ___E-Hi/D___ ___Oflo/D___06.289 07.071 1309.2 8.91 683.3 4.65 548.3 3.73 997.0 6.78 234.7 1.60 313.6 2.13

After de-oversubscribing the winter:

• 8.91 est_orbs/day

• 6.78 effective SAA-free est_orbs/day

• (4.65 explicit SAA-free).

Caveats about over-interpreting Validator results

Validator results must be taken in context.

Validator is not calibrated against SPSS scheduling, particularly against 2-gyro.

E.g.:

• Degree of reliance upon SAA-friendly scheduling in SPSS is unknown,• Efficiency of SAA-free usage is unknown,• SPIKE has no knowledge of MAG-field slew issues,• No slew constraint in SPIKE,• Some SPIKE-SPSS orbital viewing issues are known.

Validation at free=5/hider=4These validation levels leave an orbit/day in the average free limits for the unplanned. No “margin” for saa-hiding.

Should be taken in context of planning process and other validation runs.

Validation at Free=5/Hide=3

These validation levels leave an orbit/day each in the average free & hider limits for the unplanned.

Should be taken in context of planning process and other validation runs.

Resource Integrations (30-day intervals)--Date Range- ___Orbs/D___ ___Free/D___ ___Hide/D___ ___E-Fr/D___ ___E-Hi/D___ ___Oflo/D___

06.212 06.242 250.7 8.36 149.6 4.99 101.1 3.37 205.6 6.85 45.1 1.50 56.1 1.87 Aug

06.242 06.272 214.6 7.15 95.7 3.19 110.0 3.67 160.1 5.34 45.5 1.52 64.5 2.15 Sep

06.272 06.302 245.1 8.17 82.7 2.76 160.6 5.35 180.1 6.00 63.2 2.11 97.3 3.24 Oct

06.302 06.332 220.9 7.36 114.6 3.82 85.8 2.86 153.4 5.11 47.0 1.57 38.8 1.29 Nov

06.332 06.362 315.2 10.51 168.1 5.60 129.6 4.32 256.4 8.55 41.3 1.38 88.3 2.94 Dec

06.362 07.027 276.9 9.23 151.9 5.06 104.7 3.49 202.6 6.75 53.9 1.80 50.8 1.69 Jan

07.027 07.057 229.5 7.65 137.7 4.59 73.6 2.45 184.3 6.14 26.9 0.90 46.6 1.55 Feb

07.057 07.087 247.1 8.24 125.2 4.17 113.9 3.80 177.7 5.92 61.4 2.05 52.5 1.75 Mar

07.087 07.117 250.4 8.35 167.9 5.60 74.5 2.48 203.4 6.78 39.1 1.30 35.4 1.18 Apr

07.117 07.147 219.1 7.30 121.3 4.04 75.7 2.52 151.3 5.04 45.8 1.53 30.0 1.00 May

07.147 07.177 226.3 7.54 98.9 3.30 78.8 2.63 125.9 4.20 51.8 1.73 27.0 0.90 Jun

07.177 07.207 163.2 5.44 85.7 2.85 55.7 1.86 108.3 3.61 33.1 1.10 22.7 0.76 Jul

07.207 07.237 190.6 6.35 91.6 3.05 59.2 1.97 112.3 3.74 38.5 1.28 20.7 0.69 Aug07.237 07.267 194.4 6.48 84.3 2.81 94.5 3.15 130.3 4.34 48.5 1.62 46.0 1.53 Sep07.267 07.297 76.6 2.55 48.7 1.62 7.4 0.25 50.5 1.68 5.7 0.19 1.7 0.06 Oct07.297 07.327 47.6 1.59 30.9 1.03 13.8 0.46 33.3 1.11 11.4 0.38 2.4 0.08 Nov07.327 07.357 46.2 1.54 22.1 0.74 14.3 0.48 23.4 0.78 13.0 0.43 1.2 0.04 Dec07.357 08.022 73.4 2.45 41.1 1.37 30.7 1.02 61.9 2.06 9.9 0.33 20.8 0.69 Jan08.022 08.052 61.4 2.05 35.4 1.18 16.8 0.56 42.8 1.43 9.4 0.31 7.4 0.25 Feb08.052 08.082 9.7 0.32 5.1 0.17 4.4 0.15 5.9 0.20 3.6 0.12 0.7 0.02 Mar08.082 08.112 2.7 0.09 0.6 0.02 2.1 0.07 0.6 0.02 2.1 0.07 0.0 0.00 Apr