Progress 1

 1978-008A

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11F615A15 (7K-TG) No. 102 was the first Progress vehicle to be launched, and was named Progress-1.

Progress' PAO is longer than the Soyuz version, as it carries avionics that would be in the SA on Soyuz.

After undocking , Progress-1 activated its backup rendezvous system at a distance of about 12 km, and began re-rendezvous maneuvers. However, once the system had begun operating it was interrupted and an actual re-rendezvous was not attempted.

Progress-1
Date	Time	Event	Orbit
1978 Jan 20	0824:40	Launch by Soyuz-U	KB
	0829	Blok I burn
	0833	Blok I MECO
	1200		88.78 180 x 249 x 51.6
		TCM, rev 4
	1900		90.29 240 x 337 x 51.67
1978 Jan 21		TCM, rev 17
	1400		90.35 250 x 334 x 51.65
1978 Jan 21		TCM rev 31
1978 Jan 22		Rendezvous with Salyut 6, rev 33
	1012:14	Docked with Salyut-6 DP2
1978 Feb 5		TCM
1978 Feb 6	0554	Undocked
	0620?	Rerendezvous system test
	0930		91.22 324 x 345 x 51.6
1978 Feb 7	0930		91.22 324 x 346 x 51.6
	2130		91.21 324 x 345 x 51.6
1978 Feb 8	0200	Retrofire
	0254?	Reentry over Pacific