1966-030A
The Surveyor Mass Model mission carried a Surveyor mass model in another test of Centaur restart capability. Launch was on 1966 Apr 8 at 0100:01. Atlas SECO was 8 sec early when fuel ran out. Centaur 6D (AC-8) reached a 167 x 167 km parking orbit at 0111, burning 8 s long to compensate. The second ignition of the RL10YA3-3 engines was meant to inject M-2 into a 178 x 926000 km orbit and then make a retroburn to place AC-8 in a 180 x 481000 km path, but the Centaur shut down after 17 seconds when only one engine ignited. The final orbit was only 175 x 344 km x 30.7 deg. Surveyor M-2 reentered on 1966 May 5, and Centaur AC-8 reentered on Apr 17.
| AC-8 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1966 Apr 8 | 0100:02 | Launch by AC-8 | CKAFS LC36B |
| 0102:25 | T+2:23 Atlas BECO 57 km? | ||
| 0102:59 | T+2:57 Insulation panels sep | ||
| 0103:26 | T+3:24 Fairing sep | ||
| 0103:51 | T+3:49 Atlas SECO 145 km? | ||
| 0104:01 | T+3:59 Atlas sep | ||
| 0104:06 | T+4:05 Centaur MES-1 | ||
| 0109:41 | T+9:39 Centaur MECO-1 | 88.06 161 x 186 x 30.84 | |
| 88.071 165 x 193 x 30.83 (GD) | |||
| 0134:36 | T+34:34 Centaur MES-2 | ||
| 0134:53 | T+34:51 Centaur MECO-2, 17s | 175 x 344 x 30.7 | |
| 0137:30s | T+37:30s Surveyor Model sep | ||
| 0141:32 | T+41:30 Centaur blowdown | ||
| 1966 Apr 17 | AC-8 reentered | ||
| 1966 May 5 | SM-2 reentered | ||
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