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The first generation of MiG jet fighters was based on designs similar to late-WWII German jet designs, starting with the subsonic MiG-15, Mig-17, and the low supersonic swept-wing MiG-19. A number of experimental Mach 2 Soviet designs were based on nose intakes with either swept-back wings, such as the Sukhoi Su-7, or tailed delta wings, of which the MiG-21 would be the most successful.
The E-5 prototype of the MiG-21 was first flown in 1954 and made its first public appearance during the Soviet Aviation Day display at Moscow's Tushino Airport in June 1956. The first delta-wing prototype, named "Ye-4", (also written as "E-4") flew on 14 June 1956, and the production MiG-21 entered service in early 1959. Employing a delta-wing configuration, the MiG-21 was the first successful Soviet aircraft combining fighter and interceptor characteristics in a single aircraft. It was a lightweight fighter, achieving Mach 2 speed using a relatively low-powered afterburning turbojet, and is thus comparable to the American F-104 Starfighter and French Dassault Mirage III.
When the MiG-21 was first introduced, it exhibited several flaws. Its early version air-to-air missiles, the Vympel K-13 (NATO reporting name AA-2 'Atoll'), were not successful in combat, and its gyro gunsight was easily thrown off in high-speed maneuvers, making the initial version of the MiG-21 an ineffective aircraft. These problems were remedied, and during the Middle Eastern and Vietnam wars, the MiG-21 proved to be an effective aircraft. Subsequent MiG-21 models added design modifications to incorporate lessons learned in these wars.
Like many aircraft designed as interceptors, the MiG-21 had a short range. This was not helped by a design defect where the center of gravity shifted rearwards once two-thirds of the fuel had been used. This had the effect of making the plane uncontrollable, resulting in an endurance of only 45 minutes in clean condition. The delta wing, while excellent for a fast-climbing interceptor, meant that any form of turning combat led to a rapid loss of speed. However, the light loading of the aircraft could mean that, at 50% fuel and with 2 AA-2 'Atoll' air-to-air missiles, a climb rate of 58,000 ft per minute was possible, not far short of the performance of the later F-16A. Given a skilled pilot and capable missiles, it could give a good account of itself against contemporary fighters. It was replaced by the newer variable-geometry MiG-23 and MiG-27 for ground support duties. However, not until the MiG-29 would the Soviet Union ultimately replace the MiG-21 as a maneuvering dogfighter to counter new American air superiority types.
The MiG-21 was exported widely and continues to be used well past the time where it might have been considered obsolete. The aircraft's simple controls, engine, weapons, and avionics were typical of Soviet-era military designs. While technologically inferior to the more advanced fighters it often faced, low production and maintenance costs made it a favorite of nations buying Eastern Bloc military hardware.
Due to the lack of available information, early details of the MiG-21 were often confused with those of the similar Sukhoi fighters also under development. Jane's All the World's Aircraft 1960-1961 describes the "Fishbed" as a Sukhoi design, and uses an illustration of the Su-9 'Fishpot'.
A total of 10.158 (some sources say 10.645) were built in the USSR. They were produced in three factories, in the GAZ 30 of Moscow (also known as Znamiya Truda), in GAZ 21 at Gorky and in
GAZ 31 at Tbilisi. The type of "MiG" manufactured differed. Gorky built single-seaters for the Soviet forces. Moscow built single-seaters for export and Tbilisi manufactured the
twin-seaters both for export and for the USSR. However, there are exceptions. The MiG-21R and MiG-21bis for export and for the USSR were built in Gorky, 17 single-seaters were bulit in
Tbilisi (probably MiG-21F), the MiG-21MF was first built in Moscow and then Gorky, and the MiG-21U was built in Moscow as well as in Tbilisi. The count for each factory is :
5278(or 5765) in Gorky.
3203 in Moscow.
1677 in Tbilisi.
The MiG-21 has a delta wing. The sweep angle on the leading edge is 57° with a TsAGI S-12 airfoil. The angle of incidence is 0° while the dihedral angle is -2°. On the trailing edge there are ailerons with an area of 1,18 m², and flaps with an area of 1,87 m². In front of the ailerons there are small wing fences.
A semi-monocoque with an elliptical profile with a maximum width of 1.24 m. The air flow to the engine is regulated by a cone in the air intake. Up until the MiG-21PF it is three staged. On speeds up to M=1,5 it is fully retracted, between speeds of M=1,5 and M=1,9 it is in the middle position, and with speeds higher than M=1,9 it is in the maximum forward position. However, on the MiG-21PF it adapts to the actual speed, according to the UVD-2M system aboard the aircraft, which monitors the pressure in front and behind the compressor of the engine. On both side of the nose there are gills to supply the engine with more air while on the ground and during takeoff. In the first variant of the MiG-21, the Pitot tube is on the bottom of the nose; after the MiG-21P, every version of the "21" has this tube situated on the top of the air intake. The cabin is pressurized and air conditioned. The canopy up until the MiG-21PFM opens on a hinge on the front of the canopy. When ejecting the SK-1 ejection seat connects with the canopy making a capsule to enclose the pilot and protect him from the airflow, after which it would separate and the pilot would parachute down. However, the canopy took too long to separate and some pilots were killed after ejecting at low altitudes. On the MiG-21PFM the canopy opens on a hinge on the right side of the cockpit. On the belly of the plane there are three air brakes, two at the front and one at the back. The front brakes have an area of 0,76 m², and a deflection angle of 35°. The back one has an area of 0,46 m² and a deflection angle of 40°. The usage of the back air brake is blocked if the plane caries an external fuel tank. Behind the air brakes are the bays for the main landing gear. Under the body, just behind the trailing edge of the wing, two JATO rockets can be attached. The front part of the fuselage ends with former #28. Beginning with former #28a is the back part of the fuselage, which is removable for engine maintenance.
The empennage of the MiG-21 consists of a vertical stabilizer, a stabilator and a small fin on the bottom of the tail to improve yaw control. The vertical stabilizer has a sweep angle of 60° and an area of 5,32 m² (on earlier version 3,8 m²) and a rudder. The stabilator has sweep angle of 57°, an area of 3,94 m² and a span of 2,6m.
A tricycle type undercarriage with a nose gear. The main landing gear has tires 800 mm in diameter and 600 mm in width (till the MiG-21P 660 x 200). The wheels of the main landing gear retract in the fuselage after rotating 87°, the shock absorbers retract in the wing. The nose gear retracts forward in the fuselage under the radar. The wheel base is 4,71m, the track width is 2,69m.
Engine | Thrust (kN)* | Variants |
---|---|---|
R-11F-300 | 38,2/53,4 | F, F-13, U |
R-11F2-300 | 38,7/60 | F-13 (refitted), PF, FL |
R-11F2S-300 | 38/60 | PF, PFS, PFM, R, S, M, US, UM. |
R-11F2SK-300 | 38/60 | MF |
R-13-300 | 40/63,7 | M (refitted), MF, RF, SM, SMT, UM (refitted). |
R-25-300 | 40/70 (97 with "extreme afterburner") | bis. |
* without/with afterburner
The MiG-21 initially achieved renown in the Vietnam War, during which it saw frequent action. It was one of the most advanced aircraft at the time; however, many North Vietnamese aces preferred flying the Mig-17, since the high wing loading on the MiG-21 made it less maneuverable than the Mig-17. Although the MiG-21 lacked the long-range radar, missiles, and heavy bombing payload of its contemporary multimission U.S. fighters, it proved a challenging adversary in the hands of experienced pilots especially when used in high speed hit and run attacks under GCI control. MiG-21 intercepts of F-105 Thunderchief strike groups were effective in downing US aircraft or forcing them to jettison their bomb loads.
By the bombing halt in Operation Rolling Thunder in 1968, poor air-to-air combat loss-exchange ratios against smaller, more agile enemy MiGs during the early part of the Vietnam War eventually led the USAF to establish dissimilar air combat training "Aggressor" programs such as Navy "Top Gun", these two programs employed subsonic A-4 Skyhawk and F-5 Tiger II aircraft to mimic the performance of more maneuverable opponents like the Mig-17 and MiG-21.
A VPAF MiG-21MF flown by Phạm Tuân over Hanoi, North Vietnam on December 26, 1972 was apparently responsible for the only claimed combat kill of a U.S. Air Force B-52 Stratofortress in history. The B-52 had been circling above Hanoi during Operation Linebacker II. Over the course of the Vietnam War, between April 26, 1965 and January 8, 1973, each side claimed favorable kill ratios.
The MiG-21 was also used extensively in the Middle East conflicts of the 60s and 70s by the air forces of Egypt, Syria and Iraq against Israel. The MiG-21 first faced Israeli Mirage IIICs on April 7th, 1967 when six Syrian MiG-21's were shot down by the Israeli Mirages. The MiG-21 would face F-4 Phantom IIs and A-4 Skyhawks later in the 70s, but was later outclassed by the more modern F-15 Eagle and F-16 Fighting Falcon, which were acquired by Israel beginning in the 1980s. The MiG-21 was also used in the early stages of the Soviet invasion of Afghanistan in December, 1979.
Interestingly, Egypt would eventually be shipped some American Sidewinder missiles, and these were fitted to their MiG-21s and successfully used in combat against Libyan MiG-23s during the brief 1977 war.
In 1991, two MiG-21s were downed by F/A-18 Hornets from the USS Saratoga during Desert Storm.
The Indian Air Force has been one of the largest users of the MiG-21 since its initial employment of the plane in the Indo-Pakistani War of 1971. That war witnessed the first supersonic air combat in the subcontinent when an Indian MiG-21 shot down a PAF F-104 Starfighter. The MiGs played an important role in air combat, ensuring an aerial superiority that ultimately resulted in Pakistan's defeat in just a fortnight. It was also used as late as 1999 in the Kargil War. The MiG-21's last known kill took place in 1999 during the Atlantique Incident when two MiG-21 aircraft of the Indian Air Force shot down a Breguet Atlantique reconnaissance aircraft of the Pakistani Navy, claiming the Pakistani aircraft violated Indian airspace. Upgraded MiG-21 'Bison' aircraft reportedly performed well against F-15 and F-16s of the USAF during Indo-US joint air exercises, surprising American pilots with its capabilities.
During 1991-1995, Yugoslav People's Army and Serb forces used its MiG-21Ms (about a hundred in total compromising 1/3 of the entire air force) during the Slovenian War, Croatian War of Independence and the Bosnian War and again during the 1999 Kosovo War and NATO bombing of Yugoslavia. Except during the NATO intervention, the aircraft had no air opposition and was mainly used in a ground-attack role. Detailed records show at least six were shot down by AA defences in Croatia and Bosnia and another 24 were destroyed by NATO, most while on the ground. In 1993, Croatia purchased about 40 MiG-21s in violation of arms embargo, but only 25 of these entered service, while the rest were used for spare parts. Croatia used them alongside the four that defected from the JNA mainly for ground attack missions.
During the Cold War MiG-21s were supplied to many sub-Saharan African nations by the Soviets. Their most notable use in combat occurred during the Angolan Civil War in the hands of the People's Air and Air Defence Force of Angola. Cuban Air Force pilots also flew MiG-21s over Angola during the War. Both Angolan and Cuban MiG-21s often had encounters with, and were downed by, South African Air Force Mirages.
Chinese copies of the MiG-21 are designated Chengdu J-7 and F-7 (for export).
Between 1962 and 1972 the MiG-21F-13 version was manufactured under license by Aero Vodochody, in Czechoslovakia. Aero Vodochody (then Středočeské strojírny, n.p.), built a total of 194 planes during this period, under the cover designation article Z-159. It followed the MiG-15 and MiG-19s built in Vodochody factory from the fifties to sixties. The sole locally-built version of the MiG-21F-13 differed externally from the Soviet-built examples by the solid dural sheet fairing behind the cockpit canopy, as opposed to the transparent one on the original Soviet MiGs. These machines were built for the Czechoslovak Air Force and also for export. The R-13-300 engines were imported from the Soviet Union.
The production of the MiG-21bis assembled from CKD parts and also reportedly built from scratch in India under license by Hindustan Aeronautics in Nasik lasted until 1984. Despite a series of crashes during the 90s, which led to the aircraft acquiring the nickname "flying coffin," the Indian Air Force has decided to upgrade about 128 of the MiG-21bis in its inventory to the MiG-21 "Bison" standard. They are planned to serve the Indian Air Force until 2015.
Israeli Aircraft Industries manufactured an upgrade package for the MiG-21 called the MiG-21-2000.
A joint venture between Aerostar SA and Elbit has developed the "LanceR" upgrade package for the MiG-21, and 114 MiG-21s have been upgraded to the MiG-21 LanceR configuration for the Romanian Air Force.
Russia now offers an upgrade package to bring late-model MiG-21s up to the MiG-21-93 standard. This package provides an upgrade of the avionics suite that includes installation of the Kopyo pulse-Doppler radar used by the MiG-29, which enables the aircraft to fire a greater range of modern weapons such as the beyond-visual-range Vympel R-77 air-to-air missile. The upgraded avionics also enhance the aircraft's survivability as well as its ability to engage enemy fighters. Other upgrade features include installation of a dual-screen HUD, helmet-mounted target designator, and advanced flight control systems.
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