R-40 (missile)

R-40 AA-6 Acrid
Type	Long-range air-to-air missile
Place of origin	Soviet Union
Service history
In service	1970–present
Used by	Soviet Union, Syria, Iraq
Wars	Iran–Iraq War, Gulf War, Operation Southern Watch
Production history
Designer	OKB-4 MR Bisnovatyi
Designed	1959
Produced	1960s–1995
Variants	R-40R / R-40T, R-40RD / R-40TD, R-40RD1 / R-40TD1 (radar and IR models)
Specifications (R-40RD)
Mass	475 kg (1,047 lb)
Length	6.29 m (20 ft 8 in)(radar guided) - 5.91 m (19 ft 5 in) (IR guided)[1]
Diameter	0.31 m (12 in)
Wingspan	1.45 m (4 ft 9 in)
Warhead	blast fragmentation
Warhead weight	38–100 kg (84–220 lb)
Detonation mechanism	Radar and active laser fuzes
Engine	solid-propellant rocket motor
Operational range	50–80 km (31–50 mi)[2]
Maximum speed	Mach 2.2-4.5[3]
Guidance system	Inverse monopulse Semi-active radar homing (R-40RD) Infrared homing (R-40TD)
Launch platform	MiG-25, MiG-31, Su-21,[4] Su-22[4]

The Bisnovat (later Molniya then Vympel) R-40 (NATO reporting name AA-6 'Acrid') is a long-range air-to-air missile developed in the 1960s by the Soviet Union specifically for the MiG-25P interceptor, but can also be carried by the later MiG-31. It is one of the largest production air-to-air missiles ever developed.