Mikoyan MiG-29
The Mikoyan MiG-29 is a twin-engine fighter aircraft designed in the Soviet Union. Developed by the Mikoyan design bureau as an air superiority fighter during the 1970s, the MiG-29, along with the larger Sukhoi Su-27, was developed to counter U.S. fighters such as the McDonnell Douglas F-15 Eagle and the General Dynamics F-16 Fighting Falcon. The MiG-29 entered service with the Soviet Air Forces in 1983.
While originally oriented towards combat against any enemy aircraft, many MiG-29s have been furnished as multirole fighters capable of performing a number of different operations, and are commonly outfitted to use a range of air-to-surface armaments and precision munitions. The MiG-29 has been manufactured in several major variants, including the multirole Mikoyan MiG-29M and the navalised Mikoyan MiG-29K; the most advanced member of the family to date is the Mikoyan MiG-35. Later models frequently feature improved engines, glass cockpits with HOTAS -compatible flight controls, modern radar and infrared search and track sensors, and considerably increased fuel capacity; some aircraft have also been equipped for aerial refueling.
Following the dissolution of the Soviet Union, the militaries of multiple ex-Soviet republics have continued to operate the MiG-29, the largest of them being the Russian Aerospace Forces. The Russian Aerospace Forces wanted to upgrade its existing fleet to the modernised MiG-29SMT configuration, but financial difficulties have limited deliveries. The MiG-29 has also been a popular export aircraft; more than 30 nations either operate or have operated the aircraft. Flight Global estimates that 809 MiG-29s, of all types, are in service with air forces, making it the 5th most common active fighter.
Development
Origins
In the mid-1960s, the United States Air Force encountered difficulties over the skies of Vietnam. Supersonic fighter bombers that had been optimized for low altitude bombing, like the F-105 Thunderchief, were found to be vulnerable to older MiG-17s and more advanced MiGs which were much more maneuverable. In order to regain limited air superiority, the US refocused on air combat using the F-4 Phantom multirole fighter, while the Soviet Union developed the MiG-23 in response. Towards the end of the 1960s, the USAF started the "F-X" program to produce a fighter dedicated to air superiority, which led to the McDonnell Douglas F-15 Eagle being ordered for production in late 1969.At the height of the Cold War, a Soviet response was necessary to avoid the possibility of the Americans gaining a serious technological advantage over the Soviets, thus the development of a new air superiority fighter became a priority. In 1969, the Soviet General Staff issued a requirement for a Perspektivnyy Frontovoy Istrebitel. Specifications were extremely ambitious, calling for long range, good short-field performance, excellent agility, Mach 2+ speed, and heavy armament. The Russian aerodynamics institute TsAGI worked in collaboration with the Sukhoi design bureau on the aircraft's aerodynamics.
File:Soviet MiG-29 DF-ST-99-04977.JPG|thumb|A Soviet Air Forces MiG-29 parked after a display flight at the Abbotsford Air Show, 1989
By 1971, however, Soviet studies determined the need for different types of fighters. The PFI program was supplemented with the Perspektivnyy Lyogkiy Frontovoy Istrebitel program; the Soviet fighter force was planned to be approximately 33% PFI and 67% LPFI. PFI and LPFI paralleled the USAF's decision that created the "Lightweight Fighter" program and the General Dynamics F-16 Fighting Falcon and Northrop YF-17. The PFI fighter was assigned to Sukhoi, resulting in the Sukhoi Su-27, while the lightweight fighter went to Mikoyan. Detailed design work on the resultant Mikoyan Product 9, designated MiG-29A, began in 1974, with the first flight taking place on 6 October 1977. The pre-production aircraft was first spotted by United States reconnaissance satellites in November of that year; it was dubbed Ram-L because it was observed at the Zhukovsky flight test center near the town of Ramenskoye.
The workload split between TPFI and LPFI became more apparent as the MiG-29 filtered into frontline service with the Soviet Air Forces in the mid-1980s. While the heavy, long range Su-27 was tasked with the more exotic and dangerous role of deep air-to-air sweeps of NATO high-value assets, the smaller MiG-29 directly replaced the MiG-23 in the frontal aviation role.
Introduction and improvements
In the West, the new fighter was given the NATO reporting name "Fulcrum-A" because the pre-production MiG-29A, which should have logically received this designation, remained unknown in the West at that time. The Soviet Union did not assign official names to most of its aircraft, although nicknames were common. Unusually, some Soviet pilots found the MiG-29's NATO reporting name, "Fulcrum", to be a flattering description of the aircraft's intended purpose, and it is sometimes unofficially used in Russian service.The MiG-29 was widely exported in downgraded versions, known as MiG-29 9-12A for Warsaw Pact and MiG-29 9-12B for non-Warsaw Pact nations, with less capable avionics and no capability for delivering nuclear weapons.
In the 1980s, Mikoyan developed the improved MiG-29S to use longer range R-27E air-to-air missiles. It added a dorsal 'hump' to the upper fuselage to house a jamming system and some additional fuel capacity. The weapons load was increased to with airframe strengthening. These features were included in new-built fighters and upgrades to older MiG-29s.
Refined versions of the MiG-29 with improved avionics were fielded by the Soviet Union, but Mikoyan's multirole variants, including a carrier-based version designated MiG-29K, were never produced in large numbers. Development of the MiG-29K carrier version was suspended for over a decade before being resumed; the type went into service with the Indian Navy's INS Vikramaditya, and Russian Navy's Admiral Kuznetsov class aircraft carrier. Mikoyan also developed improved versions MiG-29M and MiG-29SMT.
File:Kubinka East Ramp. 23-8-2017.jpg|thumb|Russian Naval Aviation's various MiG-29s stationed at Kubinka alongside the newer and heavier Su-30SM.
There have been several upgrade programmes conducted for the MiG-29. Common upgrades include the adoption of standard-compatible avionics, service life extensions to 4,000 flight hours, safety enhancements, greater combat capabilities and reliability.
Replacement
On 11 December 2013, Russian deputy prime minister Dmitry Rogozin revealed that Russia was planning to build a new fighter to replace the MiG-29. The Sukhoi Su-27 and its derivatives were to be replaced by the Sukhoi Su-57, but a different design was needed to directly replace the lighter MiGs. A previous attempt to develop a MiG-29 replacement, the MiG 1.44 demonstrator, failed in the 1990s. The concept came up again in 2001 with interest from India, but they later opted for a variant of the Su-57. Air Force commanders have hinted at the possibility of a single-engine airframe that uses the Su-57's engine, radar, and weapons primarily for Russian service. This has since been revealed to be the Sukhoi Su-75 Checkmate. Meanwhile, in Russian service, the MiG-29 has been largely replaced by the Sukhoi Su-30SM, representing a loss in market share of the MiG-29 series to the Sukhoi heavier platforms.Design
Sharing its origins in the original PFI requirements issued by TsAGI, the MiG-29 has broad aerodynamic similarities to the Sukhoi Su-27, but with some notable differences. The MiG-29 has a mid-mounted swept wing with blended leading-edge root extensions swept at around 40°; there are swept tailplanes and two vertical fins, mounted on booms outboard of the engines. Automatic slats are mounted on the leading edges of the wings; they are four-segment on early models and five-segment on some later variants. On the trailing edge, there are maneuvering flaps and wingtip ailerons.The MiG-29 has hydraulic controls and a SAU-451 three-axis autopilot but, unlike the Su-27, no fly-by-wire control system. Nonetheless, it is very agile, with excellent instantaneous and sustained turn performance, high-alpha capability, and a general resistance to spins. The airframe consists primarily of aluminum with some composite materials, and is stressed for up to 9 g maneuvers. The controls have "soft" limiters to prevent the pilot from exceeding g and alpha limits, but the limiters can be disabled manually.
Powerplant, performance and range
The MiG-29 has two widely spaced Klimov RD-33 turbofan engines, each rated at dry and in afterburner. The space between the engines generates lift, thereby reducing effective wing loading, hence improving maneuverability. The engines are fed through intake ramps fitted under the leading-edge extensions, which have variable ramps to allow high-Mach speeds. Due to their relatively short combustor, the engines produce noticeably heavier smoke than their contemporaries. As an adaptation to rough-field operations, the main air inlet can be closed completely and the auxiliary air inlet on the upper fuselage can be used for takeoff, landing and low-altitude flying, preventing ingestion of ground debris. Thereby the engines receive air through louvers on the LERXs which open automatically when intakes are closed. However the latest variant of the family, the MiG-35, eliminated these dorsal louvers, and adopted the mesh screens design in the main intakes, similar to those fitted to the Su-27.The MiG-29 has a ferry range of without external fuel tanks, and with external tanks. The internal fuel capacity of the original MiG-29 is distributed between six internal fuel tanks, four in the fuselage and one in each wing. The internal fuel capacity of the MiG-29 is due to a larger #1 fuselage tank. For longer flights, this can be supplemented by a centreline drop tank on the Fulcrum-A and two underwing drop tanks on later production batches. In addition, newer models have been fitted with port-side inflight refueling probes, allowing much longer flight times by using a probe-and-drogue system.