130, 136:
https://testpilot.ru/russia/tupolev/136/
Thanks for this link. The Tupolev '130' (aka DP [
Dal'niy Planer=long-range glider]) was not an orbital vehicle, but instead a hypersonic glide vehicle designed to be carried to altitude by an R-5 or R-12 ballistic missile. While the '130' was never built or tested, its design would influence that of the '136'.