Concordski is the nickname for the Soviet Tupolev TU-144 which was the competitor to the Anglo Concorde project. Many believe the Soviets used spies to gain access to the plans of the production of the Concorde so that they could build their own. You can view the Tupolev TU-144 at the Auto & Technik Museum in Sinsheim in Germany, it is displayed alongside Air France Concorde F-BVFB.