STS-68 (Endeavour)

 1994-062A

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The STS-68 mission had an RSLS abort at T-1.9s on 1994 Aug 18 due to higher than expected temperatures on engine 2032. The launch was postponed until after the STS-64 flight. The second Space Radar Lab mission finally got off the ground at 1115.58 UT on 1994 Sep 30. SRB separation was at 0718 and MECO and ET separation came at 0724, leaving Endeavour in a 52 x 213 km x 57 deg orbit. The OMS 2 circularization burn was at MET 35:10, or 0751 UT. The orbit at Sep 30.70 was 213 x 226 km x 57.0 deg.

Trim burns were made on Oct 4 to adjust the orbit to match that of the STS-59 flight to within 10 meters. The orbit was lowered on Oct 7 for an interferometry experiment. A trim burn on Oct 9 adjusted the orbit again. 

STS-68
Date	Time	Event	Orbit
1994 Jul 21		Tow to VAB
1994 Aug 3		Rollout
1994 Aug 18	1053:58	RSLS abort T-1.8s	LC39
1994 Aug 24		Rollback	VAB
1994 Sep 30	1116:00	Launch	LC39
	1118:04	SRB sep T+2:04
	1124:35	MECO T+8:35	87.24 49 x 226 x 57.0 (OMS dV)
	1124:54	ET sep	52 x 213 x 57.0
	1126:35	Prop dump
	1151:09	OMS-2 1:39 49m/s	88.90 214 x 226 x 57.01
	1249	PLBD open
		Activate radar
1994 Oct 2			88.86 212 x 224 x 57.0
1994 Oct 5			88.80 209 x 221 x 57.0
1994 Oct 7	0600		88.76 206 x 219 x 57.0
		Lower orbit
1994 Oct 8	1600		88.61 199 x 212 x 57.0
1994 Oct 10		Deactivate radar payload
1994 Oct 11	0600		88.60 198 x 211 x 57.0
	1206	PLBD closed
	1607:19	Deorbit 2:18 73m/s	-42 x 210 x 57
	1629:46	Entry interface
	1702:09	Landed	RW22 EAFB
	1702:11	Drag chute
	1702:21	NGTD
	1703:10	Wheels stop