Model Variants (Including Prototypes)
S-1 - Prototype Model Designation
S-2 - Prototype Model Designation with redesigned slab tailplane; becoming the Su-7 air superiority production model.
S-22 - Preproduction Derivative Model of the S-2 fitted with Lyulka AL-7F turbojet capable of 19,814 lbs of thrust; becoming the ground attack production model.
Su-7 (Fitter-A) - Initial Production Model Designation; tactical air superiority version; produced from 1957 until 1960; 132 examples produced.
Su-7BM - Fitting an upgraded Lyulka AL-7F-1 turbojet engine; revised aerodynamics; wing fuel tanks; provision for underwing external fuel tanks for increased range; nuclear-capable; production from 1963 to 1965.
Su-7BKL / S-22KL - Fitted with 2 x SPRD-110 JATO lift rockets of 13,300lbf; skids added to main landing gear for improved field operations; brake parachutes for short-landings; production from 1965 to 1972.
Su-7BMK - Export Model of the Su-7BM production version; produced from 1967 to 1971.
Su-7U (Moujik) - Two-seat tandem trainer model; deletion of internal fuel tank; produced from 1966 to 1972.
Su-7UMK - Export version of the Su-7U two-seat trainer.
Su-7UM - Two-Seat Trainer version of the Su-7BM production model.
Su-7IG - Proposed Variable Geometry Wing model (swing-wing); becoming the Su-17 "Fitter" production model line; fitting improved AL-7F-1 turbojet engine of 24,691lbs thrust.
100LDU "Control Configured Vehicle" (CCV) - Modified Su-7U trainer model fitted with canards; fly-by-wire testing platform.