It is a Soviet/Russian second-generation supersonic jet fighter. The MiG-23 fighter jet adopts a single seat variable sweep wing aerodynamic layout and is equipped with a turbojet engine. Its outstanding performance is high flight speed, reaching 2.35 times the speed of sound at high altitude and 1350 kilometers per hour at low altitude. It also has good horizontal acceleration, which is conducive to low altitude breakthrough, high-speed interception, and detachment after attack. MiG-23UB, a two seater trainer type MiG-23, also known as MiG-23UM. The internal code 23-511 made its maiden flight in May 1969. The first aircraft was modified from a MiG-23S model, and later from a MiG-23M model.