Rocsat 1

 1999-002A

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The Republic of China (Taiwan) NSPO National Space Program Office contracted TRW to built the ROCSAT (Republic of China Satellite) experimental satellite. Taiwan Aerospace/Taichung and ITRI/Hsinchu, as well as the NSPO/Hsinchu integration facility were involved in building the satellite. Rocsat has a mass of 403 kg and will be launched into a 600 x 600 x 35 orbit. The OCI will determine plankton levels for fisheries management. Size is 1.1 x 1.1 x 2.0 m with two 1.1 x 2.5 m solar arrays. The Rocsat bus will also be used for some EOS missions.

In some contexts ROCSAT is referred to in Chinese by the word whose Wade-Giles transliteration is Chunghua (meaning China). Taiwan at this time used Wade-Giles rather than Pinyin. However more generally the name Formosat-1 (

\uni{ 福爾摩沙衛星一號}{ }

Fuermosha weixing yi hao) is used.

The Athena has a Castor 120 stage 1 and an Orbus 21D ESBM (Equipment Section Boost Motor).

On 2004 Jun 16 the satellite lost Sun sensor capabilities and the spacecraft was unable to keep its solar panels oriented, losing power.

ESBM was 10810 kg full 1030 em, thrust 189.2 kN, 296s Isp. 2903 m/s. mdot 65.2 kg/s.

m1/m2 = 11213 / 1433 so dV = 5972 m/s

ROCSAT 1
Date	Time	Event	Orbit
1999 Jan 27	0034	Launch by Athena-1	SPFL SLC46
		T+1:34 St 1 burnout
		T+3:09 Model 92 Fairing sep
		T+3:14 St 1 sep
	0037	T+3:16 ESBM burn 149s	-6194? x 222 x 35.0
		T+5:45 ESBM burnout
	0039	T+5:45 ESBM sep	89.25 208 x 265 x 35.0 (ILAM)
		T+5:50 OAM burn 121s
	0041	T+7:51 OAM MECO	92.79 209 x 612 x 35.0 (ILAM)
	0125	T+51:55 OAM burn 2 164s
	0128	T+54:39 OAM MECO-2
	0139	T+1:05:08 OAM sep	96.74 596 x 608 x 35.0 (ILAM)
	0144	T+1:10:08 OAM CCAM burn
	0146	T+1:12:24 OAM CCAM cutoff	91.99 146 x 597 x 34.7 (ILAM)