Kosmos 133

  1966-107A

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The first Soyuz 7K-OK test flight  was spacecraft 11F615 No. 2, launched on 1966 Nov 28 and designated Kosmos-133. It was the first flight of the 11A511 Soyuz launch vehicle. 7K-OK No. 1, the passive target, was to be launched the next day but after orbit insertion 7K-OK No. 2's DPO attitude control system fired to depletion sending the craft tumbling at two revs per min. The DPO engines were also used by the SKD main engine, so the backup DKD engine was considered for deorbit, but its attitude control system turned out to be connected up wrong. A first deorbit burn was made on Rev 18 with a cutoff at 10s, and another on the next rev failed after 15s. An attempt to counteract decay until the next passes over the USSR also failed.

The next day's burn was mostly nominal except that it cut off late. One report says that the descent module was exploded on command when it was discovered that the trajectory was taking it on course for an impact in China or South Korea. The Kamanin diaries suggest the auto destruct cut in when it overshot the USSR and fell in the Pacific east of the Mariana Is.

Kosmos-133
Date	Time	Event	Orbit
1966 Nov 28	1100	Launch by 11A511	KB
	1104	Blok-I burn
	1109	Blok-I sep	88.39 141 x 249 x 51.78
1966 Nov 29	0000		174 x 220 x 51.83
	1430?	Rev 18 SKD burn deorbit, 10s
	1620?	Rev 19 SKD burn deorbit, 15s
	1750?	Rev 20? SKD burn raise, 20s
1966 Nov 30	0200		148 x 173 x 51.82
	0945?	Rev 33 SKD burn deorbit, early cutoff
	1120?	Rev 34 SKD deorbit
	1135?	PAO, BO sep
	1140?	Reentry