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Mikoyan-Gurevich E-266 / MiG-25

mig-25
Mig-25 Foxbat A


The MiG-25 was designed in 1962 to intercept high altitude, high speed aircraft such as the F-108 Rapier program, the Mach 3 capable XB-70 Valkyrie and more important the A-12 which resulted in the SR-71 spy plane. Some say the posed threat of the XB-70 was the main (and only) reason for the MiG-25 design, but MiG OKB revealed that the mean reason was to counter the A-12/YF-12 program. When the XB-70 Valkyrie development stopped in 1963, the development of the MiG-25 continued.

The bureau was instructed to ignore virtually every aspect of flight performance but outright speed, rate of climb and service ceiling in an airframe that was to be developed quickly by the use of existing technologies. This removed the possibility of delays and helped to ensure that the interceptor would be available at the time of the B-70s proposed service debut in 1964. The bureau chose a nickel-steel alloy as the primary airframe material, with titanium alloy leading edges.

The MiG-25 was later allocated the NATO reporting name 'Foxbat', but when news came that the North American B-70 programme had been cancelled, emphasis of MiG-25 development was shifted to high-speed reconnaissance rather than interception.

A cantilever high-wing monoplane with swept leading edges, a slender fuselage blended into the engine air inlets. With twin outward-canted vertical tail surfaces and all-moving horizontal tail surfaces, the MiG-25 is constructed primarily of steel, with titanium used for the leading edges of wing and tail unit to maintain structural integrity despite the high temperatures resulting from kinetic heating.

It has two afterburning turbo fans each capable of delivering 110 kN (24,700 lb) of thrust. It is equipped with a simple but very powerful radar for long range missile guidance. The MiG-25 relies on ground control radars for guidance to the target.

On 6 March 1964 the first MiG-25 prototype, designated Ye-155-R-1, made its maiden flight. Although this first prototype was a dedicated reconnaissance aircraft, it was soon followed up by an interceptor prototype. The Ye-155-P-1 made its first flight on 9 September 1964.

As the Ye-266. It featured a large fuselage (comprising mainly the powerplant arrangement of two Tumanskii R-31 afterburning turbojets plus their variable-geometry inlets and fully variable nozzles), high-set wings of broad chord and a modest sweep of 400 declining to 380 outboard of the outer pylon, slab tailplane halves and outward-canted vertical tail surfaces.

The first mention in the West that this aircraft, identified by the MiG design bureau as the Ye-266, had flown came in April 1965 with a Soviet claim that the aircraft had established a new speed record in a 1000km closed circuit. An E-266 achieved a speed of 1,441.5 mph (2,320 km/h) over a 1000 km closed circuit course with a 4,409-lb (2,000-kg) payload in April 1965. In October 1967 an E-266 raised this record, shortly after establish-ing a 310-mile (500-km) closed-circuit speed record (without payload) of 1852.61 mph (2981.5 kph). In the same month the E-266 also set a payload--to-height record by lifting a 2,000-kg load to an altitude of 98,349 ft (29,977 m). Since that time, further records have been set by the developed Ye-266M, holding the absolute world altitude record of 37650m.

The MiG-25 was first displayed in 1967.

The Ye-155-R-1 led to the first production type of the recce MiG-25, designated MiG-25R. In 1970 these aircraft were redesignated MiG-25RB when a bombing capability was added.

In the mean time the Ye-155-P-1 led to the MiG-25P which was armed with up to four AAMs carried under the wings. The MiG-25P entered service in 1970 with the Soviet Air Forces. The MiG-25P (Foxbat-A) was the first interceptor model, improved Sapfir-25 radar, fire control and engines resulted in the MiG-25PD and PDS or Foxbat-E.

The first reconnaissance derivative to appear was the MiG-25R 'Foxbat-B', which features a total of five vertical/ oblique cameras in the nose section ahead of the cockpit. SLAR (SideLooking Airborne Radar) apparatus is also installed in the forward fuselage, whilst this model and the later 'Foxbat D' both employ a different wing of shorter span than that of the interceptor.

The variants for the recce role are the MiG-25RB/RBV/BBT and the later MiG-25RBK/RBS/RBSh and RBF models which had improved radar, sensors and cameras.

The Foxbat-B is also thought to have entered service in 1970, and it is known that four Soviet air force aircraft of this type were deployed to Egypt in the spring of 1971, making a number of forays from Cairo West to conduct reconnaissance sorties over the Israeli occupied Sinai peninsula and down Israel's coast. Israeli attempts to intercept these with McDonnell Douglas F4E Phantoms met with no success, and the MiG-25Rs remained in Egypt until the autumn of 1975,

The 'Foxbat-B' was followed in due course by the Foxbat-D, generally similar in appearance although it lacks the camera installation and also incorporates a larger SLAR, located slightly farther aft and much closer to the cockpit. 1984 estimates indicate that a combined total of about 160 examples of the 'Foxbat-B' and 'Foxbat-D' models were present with Soviet tactical air forces, others having been supplied to Algeria, India, Libya and Syria since 1979. India was one of the biggest operator of MiG-25s among the export countries but was planning to have phased out the aircraft by 2005.

The conversion of more than 300 Foxbat A interceptors to MiG-25M Foxbat E standard, with more modern radar/missile combination and more powerful R- 31 F engines for better performance at lower altitude in the “look-down/shoot- down” role. The aircraft are distinguished by a small infrared sensor under the nose. The Foxbat B also has 137.3kN uprated Tumansky R-31 turbojets.

The MiG-25BM was developed from the MiG-25RB recce-bomber. The -25BM or Foxbat-F is basically a MiG-25RB with ECM equipment instead of the recconnaissance equipment. It is developed for the suppression of enemy air defences, especially SAM radar sites and is armed with the Kh-58 stand-off anti-radiation missiles. The MiG-25 Foxbat-F is a conversion of older aircraft with AS-11 “Kilter” missiles for the anti-radar role.

The Foxbat A high-altitude interceptor was followed by a MiG--25U Foxbat C two-seat trainer. Two seat trainer variants are the MiG-25PU for the interceptor types, MiG-25RU for the recce types, and the basic MiG-25U variant. All designated as Foxbat-C by NATO.

 

MiG-25-02

 

Over 1200 have been built, of which about 75% were interceptors. Limited production of the MiG-25 series continued in 1987.

MiG-25s have been used extensively by the VVS, and versions have been exported also to Iraq. Production terminated in 1984 in favour of the MiG-31.

 

Gallery

 

Variants:
MiG-25P (Foxbat-A)\
MiG-25RB/RBV/RBT (Foxbat-B)
MiG-25PU/RU/U (Foxbat-C)
MiG-25RBK/RBS/RBSh/RBF (Foxbat-D)
MiG-25PD/PDS (Foxbat-E)
MiG-25BM (Foxbat-F)

Operators:
Russia
Algeria
Azerbaijan
Belarus
Bulgaria
India
Iraq
Libya
Syria
Ukraine

Specifications:

E-266
Engines: 2 x 24250 lb (11,000 kg) st after burning turbojet engines
Wing span: approx 40 ft 0 in (12.20 m)
Length: approx 69 ft 0 in (21.00 m)
Speed (1967 closed-circuit record): 1,814,81 mph (2,920.67 km/h) over a 621-mile (1,000-km) course
Crew: 1

MiG-25
Engines: 2 x Tumanski R-31, 123.0kN
Max take-off weight: 35000 kg / 77162 lb
Empty weight: 20000 kg / 44093 lb
Wingspan: 15.0 m / 49 ft 3 in
Length: 25.0 m / 82 ft 0 in
Height: 6.0 m / 19 ft 8 in
Wing area: 56.8 sq.m / 611.39 sq ft
Max. speed: 3000 km/h / 1864 mph
Ceiling: 37000 m / 121400 ft
Range w/max.fuel: 2575 km / 1600 miles
Range w/max.payload: 1260 km / 783 miles
Crew: 1

MiG-25
Engines: 2 x Tumanski R-31 turbojet, 24,250 lb / 11,000 kg
Wingspan: 45 ft 9 in / 13.95 m
Length: 78 ft 1.75 in / 23.82 m
MTOW: 79,800 lb / 36,200 kg
Max speed: 2113 mph / 3400 kph
Range: 1490 sm / 2400 km

Mig-25 Foxbat A
Engine: 2 x Tumansky R-31. Installed thrust (dry / reheat): 182 / 240 kN.
Empty weight: 44,092 lb (20,000 kg)
Maximum take-off 37,425 lb (17,011 kg)
Wingspan 45 ft 9 in (13.95 m)
Length 78 ft 1.75 in (23.82 m)
Height 20 ft 0.25 in (6.10 m)
Wing area 611.7 sq ft (56.83 sq.m)
Warload: 2000 kg
Max speed: 2,115 mph (3,404 km/h) or Mach 3.2 at 36,090 ft (11,000 m)
Time to height: 2.5 min / 11,000 m
Initial climb rate: 41,010 ft (12,500 m) per minute
Service ceiling 80,050ft(24,400m)
TO run: 1400 m
Ldg run: 2200 m
Fuel internal: 17,400 lt
Air refuel: No
Combat radius: 702miles (1,130 km)
Armament: 4 x AAM

MiG-25R
Type: single-seat all-weather tactical/strategic reconnaissance aircraft
Powerplant: two Tumansky R-31 turbojets, 11 000-kg (24,250-1b) afterburning thrust
Maximum speed 3400 km/h (2,115 mph) or Mach 3.2
Service ceiling 27000 m (88,580 ft)
Normal operational radius 1095 km (690 miles)
Ferry range 2575 km (1,600 miles)
Empty weight: 19595 kg (43,200 lb)
Maximum take-off weight: 33400 kg (73,635 lb)
Wingspan 13.40 m (44 ft 0 in)
Length 23.82 m (78 ft 1 ¾ in)
Height 6.10 m (20 ft 1/4 in)
Wing area 56, 00 sq.m (603 sq ft).

MiG-25 RB
Engine: 2 x Soyuz / Moscow R 15 BD 300 , 107753 N / 10984 kp
Length: 70.702 ft / 21.55 m
Height: 19.685 ft / 6.0 m
Wingspan: 43.898 ft / 13.38 m
Max take off weight: 90846.0 lb / 41200.0 kg
Weight empty: 49215.6 lb / 22320.0 kg
Max. speed: 1620 kts / 3000 km/h
Cruising speed: 1350 kts / 2500 km/h
Service ceiling: 75459 ft / 23000 m
Range: 1150 nm / 2130 km
Fuel capacity: 4028 gal / 15245 lt
Crew: 1
Armament: 5000kg bomb

MiG-25 BM
Engine: 2 x Soyuz / Moscow R 15 BD 300 , 107753 N / 10984 kp
Length: 70.702 ft / 21.55 m
Height: 19.685 ft / 6.0 m
Wingspan: 43.898 ft / 13.38 m
Max take off weight: 90846.0 lb / 41200.0 kg
Weight empty: 49215.6 lb / 22320.0 kg
Max. speed: 1620 kts / 3000 km/h
Cruising speed: 1350 kts / 2500 km/h
Service ceiling: 75459 ft / 23000 m
Range: 1150 nm / 2130 km
Fuel capacity: 4028 gal / 15245 lt
Crew: 1
Armament: 4x Kh58 (AS-11 Kilter) 200km anti radar msl.

MiG-25PD
Powerplant: two 110 kN (24,700 lb st) Soyuz/Tumansky R-15BD-300 afterburning turbofans
Length 23.82m (78 ft 1¾ in)
Height 6.10m (20 ft ¼ in)
Wing span (over tip 14.02m (45ft 11¾ in)
Weights clean 20.000 kg (44,100 lb)
Max Take-Off Weight 36.720 kg (80,950 lb)
Max level speed at 13.000m (42,650 ft) more than Mach 2.83 or 3.000 km/h (1,865 mph)
Max level speed at sea level 1.200 km/h (745 mph)
Service ceiling 20,700m (67,900 ft)
Armament: up to four long range Air-to-Air Missiles such as the R-23 and R-40, and up to four short range IR guided AAMs like the R-60 and R-73A.

mig-25-ld

Mikoyan/Gurevich MiG-25

 

 

 


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