Proton-K/Blok D 237-01 was an individual four-stage Proton-K/Blok D flight article launched from Baikonur on 1969-01-20. The launch failed before its L1 circumlunar spacecraft reached the planned trajectory.
Proton-K/Blok D 237-01 was an individual four-stage Proton-K/Blok D flight article launched from Baikonur on 1969-01-20. The launch failed before its L1 circumlunar spacecraft reached the planned trajectory.