2K (GRAU index serial number 11F35 2K, NPO Molniya airframe number 1.02), often referred to as Ptichka (Russian: Птичка, "little bird", although this was also a nickname for all orbiters in the programme), is the second Buran-class orbiter, produced as part of the Soviet/Russian Buran programme. Although 2K was the closest to being completed of any of the Buran-class orbiters (after the orbiter Buran), it was never finished.
2K (GRAU index serial number 11F35 2K, NPO Molniya airframe number 1.02), often referred to as Ptichka (Russian: Птичка, "little bird", although this was also a nickname for all orbiters in the programme), is the second Buran-class orbiter, produced as part of the Soviet/Russian Buran programme. Although 2K was the closest to being completed of any of the Buran-class orbiters (after the orbiter Buran), it was never finished.
Source: Wikipedia "Ptichka" · CC BY-SA 4.0
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