The MiG-15, which could not safely exceed Mach 0.92, served as the basis for the MiG-17, which was designed to be controllable at higher Mach numbers. Its wing featured a "sickle sweep" compound shape, somewhat similar to the F-100 Super Sabre, with a 45° angle near the fuselage and a 42° angle for the outboard part of the wings. A further derivative of the design, designated MiG-19, featured a relatively thin wing suited to supersonic flight that was designed at TsAGI, the Soviet Central Aerohydrodynamic Institute; swept back at an angle of 55 degrees, this wing featured a single wing fence on each side. A specialist high-altitude variant, the Mig-19SV, featured, amongst other changes, flap adjusted to generate greater lift at higher altitudes, helping to increase the aircraft's ceiling from to .