2009-057A
DMSP 18 Launch by Atlas V 401 AV-017. Processed at LMSC/Sunnyvale. Will replace F-16.
AV-017 was used to test long duration Centaur ops and then disposed into a heliocentric orbit with C3 = 37.47 km2/s2. 5400 kg of extra LOX/LH2 was available after DMSP delivery.
| DMSP 18 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2009 Oct 18 | 1612:01 | Launch by Atlas V 401 | V SLC3E |
| T+4:07 BECO | |||
| T+4:13 Stage 1 sep | |||
| T+4:23 MES-1 | |||
| T+4:31 Fairing sep | |||
| 1627:21 | T+15:20 MECO-1 | ||
| 1630 | T+18:09, Centaur sep, MECO1+2:49 | 857 x 857 x 99 | |
| 102.8 850 x 857 x 98.8 (UN) | |||
| 1646? | T+35:00? sep+16:40 Begin Centaur demo | ||
| AV-017 Hydrazine burn to settle prop at reduced duty cycle | |||
| Single-direction roll coast test | |||
| Controlled GO2 venting test | |||
| LH2 pulsed chilldown test | |||
| 1910 | T+2:58:07 Centaur MES2, disposal, 841 km | ||
| Test of GO2 venting during engine burn | |||
| Enhanced MRS (continue until significant thrust decrease) | |||
| 1913 | T+3:01:47 Centaur MECO2, escape traj, 917 km | ||
| T+3:05:14 Begin blowdown | |||
| T+3:28:24 Blowdown complete | |||
| T+3:41:04 N2H4 depletion | |||
| 1957 | T+3:45:04 Centaur EOM | ||
| T+3:55:04 get Orbital Param Message | |||
| 2009 Oct 19 | 0108 | Centaur pass EL1:4 | |
| 2009 Oct 21 | 1400? | Centaur depart Earth L1 sphere | |
| 2016 Mar | Primary sat at 0710 LT | ||
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