An La-250 in flight.
The Lavochkin La-250 "Anakonda" was a high-altitude interceptor aircraft developed and produced in the Soviet Union in the 1950s. Its nickname anaconda was "invented" during the flight test and referred to both the elongated body shape as well as the relatively critical flight characteristics of the machine. It was powered by a pair of Lyulka AL-7 afterburning turbojets which generated 15,432 lbf dry and 22,050 lbf on afterburners.