Shtil-1 (Tubsat N and Tubsat N1)
This is a modification of the R-29RM (SS-N-23) for launching commercial satellites. The Shtil-1 is the basic missile with protective containers replacing the four reentry vehicles on the back side of the 3rd stage/PBV. Due to this posion, the payload volume is very restricted.
On the first flight, only one container was used, but additional instrumentation was fitted to the 3rd stage.
The Russian Ministry of Defense in 2010 retracted the offer to make R-29 based missiles available as space launchers, effectively cancelling all future Shtil missions.
→ complete list of all Vysota / Volna / Shtil flights
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