Buran is a Soviet space shuttle, which made a successful flight in 1988. The tests before the orbital flight were made using Antonov An-225, specially designed for it.
In this video we will see some radio controlled enthusiast who reinterpreted the Russian space launch mission and built a copy of Antonov AN-225 Myria, the largest airplane, and the also after Buran spacecraft.
At 4:15 you can see the moment of decoupling.
Amazing!