TDRS-8

 2000-034A

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The HS-601 TDRS-H was the first of the new series TDRS, carrying S, Ku and Ka-band but omitting the C-band payload of the earlier models. Size is 21.0m span across solar panels, 13 m across antennas. Stowed 8.4m x 3.4m. Mass is 3180 kg launch, 1777 kg BOL. Will test at 150W and move to 171W for TDRS-West duties. The dish antennas provide single access S, Ku and Ka band capability; a phased array antenna supplies S-band multiple access.

In mid-2001 it was revealed that the phased-array antenna had been disappointing in checkout, and did not meet the spec performance. TDRS H was finally accepted by NASA-GSFC in Aug 2001.

TDRS H
Date	Time	Event	Orbit
2000 Jun 30	1256	Launch by Atlas 2A AC-139	CC SLC36A
		T+2:45 BECO
		T+2:48 Booster sep
		T+3:37 Fairing sep
		T+4:35 SECO
		T+4:37 Atlas sep
		T+4:53 MES-1
		T+6:00 156 km 3.93 km/s
	1305	T+9:46 MECO-1	167 x 577 x 28.3
	1321	T+24:48 MES-2
	1322	T+26:08 MECO-2
	1326	T+29:55 Centaur sep
	1751	Antenna deploy	480.66 230 x 27665 x 27.1
2000 Jul 3	2130?	LAM-1	638.04 389 x 35954 x 26.9
2000 Jul 4	1330?	LAM-2	752.16 6066 x 35971 x 17.4
2000 Jul 5	1700?	LAM-3	20307 x 35922 x 9?
2000 Jul 7	1400s	LAM-3	1247.91 28061 x 35973 x 8.2
2000 Jul 8	1100s	LAM-4	1407.60 34396 x 36057 x 7.6
2000 Jul 9	0700s	Trim burn
2000 Jul 18			1435.88 35617 x 35947 x 7.0 GEO 150.3W
2000 Oct 15			1436.04 35646 x 35924 x 6.9 GEO 150.4W
2001 Dec 13			1436.03 35713 x 35856 x 5.9 GEO 150.4W
2002 Jan 3		Relocating from 150W
2002 Jan 22		Move in at 171W
2002 Mar 22			1436.13 35773 x 35800 x 5.6 GEO 170.7W
2004 Jan 2			1436.22 35775 x 35802 x 4.0 GEO 171.1W
2004 May		Move to 174.5W
2004 May 12			1436.06 35768 x 35803 x 3.7 GEO 174.5W