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R-4 (missile)

From Wikipedia, the free encyclopedia
Soviet long-range air-to-air missile
R-4
AA-5 Ash
R-4 missile under wing ofTupolev Tu-128
TypeHeavy air-to-air missile
Place of originSoviet Union
Service history
In service1963-1990
Used bySoviet Air Forces
Production history
ManufacturerBisnovat
Specifications (R-4R)
Mass492.5 kg (1,086 lb)
Length5.44 m (17 ft 10 in)
Diameter310 mm (12 in)
WarheadHigh explosive
Warhead weight53 kg (117 lb)

EngineSolid-fuel rocket
Operational
range
2 to 25kilometres (1.2 to 15.5 mi)
Maximum speedMach 1.6
Guidance
system
Semi-active radar homing (R-4R)
Infrared homing (R-4T)
Launch
platform
Tu-128

TheBisnovat (laterMolniya)R-4 (NATO reporting nameAA-5 'Ash') was an earlySoviet long-rangeair-to-air missile. It was used primarily as the sole weapon of theTupolev Tu-128 interceptor, matching its RP-SSmerch ('Tornado')radar.

History

[edit]

Development of the R-4 began in 1959, initially designated asK-80 orR-80, entering operational service around 1963, together with Tu-128.[1] Like many Soviet weapons, it was made in bothsemi-active radar homing (R-4R) andinfrared-homing (R-4T) versions.[2] Standard Soviet doctrine was to fire the weapons in SARH/IR pairs to increase the odds of a hit.[3] Target altitude was from 8 to 21 km. Importantly for the slow-climbing Tu-128, the missile could be fired even from 8 km below the target.

In1973 the weapon was modernized toR-4MR (SARH) /MT (IR) standard, with lower minimal target altitude (0.5–1 km),[4] improved seeker performance, and compatibility with the upgraded RP-SMSmerch-M radar.

The R-4 survived in limited service until 1990, retiring along with the last Tu-128 aircraft.[1]

Operators

[edit]
 Soviet Union

Specifications (R-4T / R-4R)

[edit]
  • Length: (R-4T) 5.2 m (17 ft 1 in); (R-4R) 5.45 m (17 ft 10 in)
  • Wingspan: 1300 mm (4 ft 3 in)
  • Diameter: 310 mm (12.2 in)
  • Launch weight: (R-4T) 480 kg (1,058 lb); (R-4R) 492.5 kg (1,086 lb)
  • Speed:Mach 1.6
  • Range: (R-4T) 2–15 km (9.35 mi); (R-4R) 2–25 km
  • Guidance: (R-4T)infrared homing; (R-4R)semi-active radar homing
  • Warhead: 53 kg ( 116.6 lb) high explosive

References

[edit]
  1. ^abGunston 2000, p. 435.
  2. ^Gunston 2000, p. xvi.
  3. ^Gunston 2000, p. xxvi.
  4. ^"Russia's Super-Sized Tu-128 Fighter: The Supersonic B-52 Killer". April 2017.
  • Gordon, Yefim (2004).Soviet/Russian Aircraft Weapons Since World War Two. Hinckley, England: Midland Publishing.ISBN 1-85780-188-1.
  • Gunston, Bill (2000).The Osprey Encyclopedia of Russian Aircraft. Oxford: Osprey.ISBN 978-1-84176-096-4.

External links

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