Radio Engineering (NIIRT), and Dr Anatoly Klimov, chief of the Moscow Radiotechnical Institute of the Russian Academy of Sciences (MRTI RAS), exposed to William Kaufmann that the MHD bypass system of the Ayaks concept would have been already built in the rumored Aurora secret spaceplane, successor of the Lockheed SR-71 Blackbird. References in popular culture The Ayaks program features prominently in the book The Broken Sword of the Empire by Maxim Kalashnikov. See also Magnetohydrodynamic converter Soviet space program Avangard (hypersonic glide vehicle) References Hypersonic aircraft Abandoned military aircraft projects of the Soviet Union