Earliest design of the Buran "BOR/ВОР" (Беспилотный Орбитальный Ракетоплан/Unpiloted Orbital Rocketplane), compared to the the Final design of the Buran.
(BOR-5 No. 502 at the Central Air Force Museum in Russia)
The BOR-5 model flew six times, first flight taking place on July 4 1984, while its last flight took place on June 22 1988. Only two of the six BOR-5 Test model remain.
(BOR-5 No. 505 at the Technik Museum Speyer in Germany)












