MiG-21

The Mikoyan-Gurevich MiG-21 (Russian: Микоян и Гуревич МиГ-21) (NATO reporting name "Fishbed") is a supersonic jet fighter aircraft, designed by theMikoyan-Gurevich Design Bureau in the Soviet Union. It was popularly nicknamed "balalaika", from the aircraft's planform-view resemblance to the Russian stringed musical instrument or ołówek (English: pencil) by Polish pilots due to the shape of its fuselage. Early versions are considered second-generation jetfighters, while later versions are considered to be third-generation jet fighters. Some 50 countries over four continents have flown the MiG-21, and it still serves many nations a half-century after its maiden flight. The fighter made aviation records. At least by name, it is the most-produced supersonic jet aircraft in aviation history and the most-produced combat aircraft since the Korean War, and it had the longest production run of a combat aircraft (1959 to 1985 over all variants).

The MiG-21 jet fighter was a continuation of Soviet jet fighters, starting with the subsonic MiG-15 and MiG-17, and the supersonic 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 deltas, of which the MiG-21 would be the most successful.

Development of what would become the MiG-21 began in the early 1950s, when Mikoyan OKB finished a preliminary design study for a prototype designated Ye-1 in 1954. This project was very quickly reworked when it was determined that the planned engine was underpowered; the redesign led to the second prototype, the Ye-2. Both these and other early prototypes featured swept wings—the first prototype with delta wings as found on production variants was the Ye-4. The Ye-4 made its maiden flight on 16 June 1955 and made its first public appearance during the Soviet Aviation Day display at Moscow's Tushino Airport in July 1956. 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 with a relatively low-powered afterburning turbojet, and is thus comparable to the American F-104 Starfighter and F-5 Freedom Fighterand the French Dassault Mirage III.

The MiG-21 is a single-engined jet fighter aircraft capable of supersonic flight.

Wing

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 edgethere 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.

Fuselage

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 thecompressor 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.

Specifications (Mikoyan-Gurevich MiG-21bis)

General characteristics

• Crew: 1
• Length: 15.0 (with pitot) m (49 ft 2.5 in)
• Wingspan: 7.154 m (23 ft 5.66 in)
• Height: 4.125 m (13 ft 6.41 in)
• Wing area: 23.0 m² (247.3 ft²)
• Empty weight: 5,339 kg (11,770 lb)
• Gross weight: 8,725 kg (19,235 lb)
• Powerplant: 1 × Tumanskiy R25-300, 40.21 kN (9,040 lbf) thrust dry, 69.62 kN (15,650 lbf) with afterburner each

Performance

• Maximum speed: 2,350 km/h (1,468 mph)
• Maximum speed: Mach 2.2
• Range: (internal fuel) 1,210 km (751 miles)
• Service ceiling: 17,800 m (58,400 ft)
• Rate of climb: 225 m/s ( ft/min)

Armament

• 1x internal 23 mm GSh-23 cannon, plus
• 2x K-13A (R-3R) or 4x Molniya R-60 AAM or
• 2x 500 kg (1,102 lbs) of bombs