Explorer 29

  1965-089A

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Geos A (Geos 1 or Explorer 29 after launch) was launched on 1965 Nov 6 by Delta E from Cape Kennedy. It entered a higher orbit than planned, 120.30 min 1115 x 2277 km x 59.4 deg rather than 1100 x1480 km. This was a test flight of the new Delta E's improved second stage, and it failed to shut down on time. The initial ascent was to a 33 degree orbit (108 deg azimuth); part of the yaw to 59 deg must have happened during stage 2 burn, as the stage 3 impulse, which occurred over the equator, is insufficient to make the turn. Geos I was operational on Nov 8 and operated until 1967 Dec 17. 

Explorer 29
Date	Time	Event	Orbit
1965 Nov 6	1838:43	Launch by Delta E	CK LC17A
		T+0:43 SRM 1-3 burnout
		T+1:10 SRM sep
	1841:12	T+2:29 Thor S/N 20202 MECO
	1841:18	T+2:35 Delta S/N 20201 burn, 6:24
	1841	T+2:36 Fairing sep
	1847:40	T+8:57 Delta SECO
		T+18:26 spinup
	1857:11	T+18:28 Delta sep	-2995? x 1195 x 59.4
	1857:21	T+18:38 Altair burn 23s
	1857:44	T+19:01 Altair cutoff	120.30 1115 x 2277 x 59.4
	1858:33	T+19:50 despin
	1858:52	T+20:09 Altair sep
		Rev 3, GG boom out 1m
1965 Nov 8		GG boom extended 11m, upside down
1965 Nov 8		Operational
1965 Nov 13	1642	GG boom retracted from 12 to 4.6m
		Tumble 180 deg
	1714	GG boom extended to 15m
1966 Dec 1		Rdot beacons deactivated
1967 Feb 8		SECOR deactivated
1967 Dec 17		End of tx