The Atlas Cheetah is a South African fighter aircraft designed and produced by the aviation company Atlas Aircraft Corporation (later Denel Aeronautics). It was developed at the behest of, and principally operated by, the South African Air Force (SAAF). The Cheetah was developed amid the Border War of the 1980s as a major upgrade of the French-built Dassault Mirage III fleet operated by the SAAF. The programme integrated technology from the Israeli-built IAI Kfir, which had been derived from the Mirage 5/IAI Nesher. The upgrade programme, which was known as Project Cushion, produced three variants; the two-seat Cheetah D, the single-seat Cheetah E, and the single-seat Cheetah C. All three models were inducted into the SAAF, functioning for a time as the service's most capable fighter and strike aircraft. A single Cheetah R, intended for aerial reconnaissance, was built as a prototype, but this variant never entered service. During 1992, the Cheetah E model was withdrawn from SAAF service; both the Cheetah Cs and Cheetah Ds were retired during April 2008, having been being replaced by the Swedish-built Saab Gripen. Since its retirement by the SAAF, a limited number have still operated in South Africa as flight test aircraft. Some have been exported, such as to the Ecuadorian Air Force (EAF) as a source of spare parts. The privately owned company Draken International intends to use the Cheetah as an adversarial aircraft for combat training services in the United States. Variants Cheetah C (Specifications below) The Cheetah C was the final development in the Cheetah series and was the only fighter aircraft in service with the SAAF until replaced by the Swedish-built Saab JAS 39 Gripen during 2008. In addition to the upgrades described above, the Cheetah C incorporated more sophisticated avionics and navigation suite and an improved pulse-doppler multi-mode radar (ELTA). The aircraft was also fitted with a data link and updated versions of the helmet-mounted sight, HUD and improved HOTAS controls. Other improvements included the fitting of a single-piece wrap-around windshield in place of the previous three-piece version, a revised in-flight refuelling probe with less external piping, new undercarriage and suspension, the deletion of the wing fences, an Atar 9K50 engine and a new nose to incorporate the more sophisticated electronics and radar. Like the Cheetah D, the Cheetah C was capable of delivering precision-guided munitions (PGMs), ranging from laser-guided bombs (LGBs), to GPS-guided weapons and TV-guided bombs. It also had the capability of using stand-off air-to-ground weapons such as the MUPSOW and TORGOS. In addition, it was able to carry a wide range of air-to-air weapons including the V4 R-Darter radar-guided missile and the A-Darter infrared (IR)-guided missile. Cheetah D The Cheetah D was the sole two-seater variant, and was predominantly used as a trainer for pilots converting to the Cheetah C. It also had a secondary attack capability, including the ability to deliver PGMs. Under Project Recipient, 10 Cheetah Ds were re-engined with the Atar 09K50C-11, replacing their original Atar 09C engines. After the engine modification, the remaining aircraft received an avionics upgrade to bring them to the same standard as the Cheetah C. The original three piece front windshield was also replaced with a one-piece wraparound version. Cheetah D No.845 was based at the Test Flight and Development Centre (TFDC) as a systems testing aircraft and used in the development of the Denel Dynamics MUPSOW stand-off weapon. Denel used two Cheetah Ds for testing (844 and 847). The former was Denel's standard systems testing aircraft, while the latter was used in the evaluation of the SMR-95 engine, a development of the Soviet-built Klimov RD-33. The performance increase offered by the Russian engine was impressive, but a combination of budget cuts and problems with the aircraft's centre of gravity contributed to the program's termination. Cheetah E The single-seater Cheetah E was developed as an interim fighter for use in the period before the Cheetah Cs became operational. It was fitted with a comparatively simple avionics suite and radar and retained the Atar 9C-3 engine. Its typical mission was as a standby interceptor, whereby a minimum of two aircraft armed with two V3B (later V3C) missiles, would be on permanent alert status in case of an attack from the north. All aircraft were placed into storage with the final example (No.842) painted in a non-standard camouflage scheme and used for systems testing. No.842 is currently with the SAAF Museum, and is stored at AFB Swartkop. In 2003, Chile purchased five of the mothballed aircraft (Numbers 819, 820, 827, 832 and 833) and indicated its desire to purchase seven more aircraft (numbers 822, 823, 825, 828, 829, 831 and 834) subject to the agreement of a suitable purchase price. The Chilean Air Force (FACh) used the Cheetah E airframes as a source of spares for its similar ENAER Pantera aircraft until these planes were retired in late 2006. Cheetah R The Cheetah R was a feasibility study into an extension of the Cheetah upgrade programme to include a specialist reconnaissance model. An Atar 9K50-engined Mirage IIIR2Z, (855), was chosen as the airframe for the upgrade. In addition to the airframe refurbishment, 855 received a new nose design and the same radar as used in the Cheetah E, the twin DEFA 30mm cannons were removed and it was the only Cheetah type to not receive an in-flight refuelling probe. The SAAF decided not to proceed with the Cheetah R programme and 855 was assigned to the Atlas Advanced Combat Wing (ACW) where it was used as a testing and development aircraft. It was decided that rather than developing a dedicated reconnaissance airframe, that the Vinten Vicon 18 Series 610 reconnaissance pod would be used on the Cheetah C variant to provide reconnaissance capabilities
