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OEPS-27  
Initial Operational Capability (IOC): 1984
Total Production: 1,048
Origin: Russia
Parent System: OEPS
Initial Operational Capability (IOC): 1984
Total Production: 2,348
Family Members: OEPS-29
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Description: The OEPS-27 is an electro-optical sighting system designed to search and track airborne targets following its infrared emissions. The OEPS-27 Infrared Search and Track System (IRST) connected to a pilot's helmet-mounted target designation system provides unmatched performance during close-range air-to-air engagements, also referred to as dogfight. This electro-optical system is also suitable for designation of ground targets based on infrared/heat emissions. In addition to the IRST capability, the EOPS rangefinding capability using a built-in laser.

Basically, an OEPS system consists of four items: infrared thermal sensor, helmet-mounted target designator, laser rangefinder and a computer. The OEPS-27 was designed for integration into the Soviet/Russian Su-27 aircraft family providing IRST capability day/night, at all altitudes and with intense enemy Electronic Counter Measures (ECM) in both modes, lookup and lookdown. It provides a coverage of -60 to +60 degrees in azimuth and -60 to +15 in elevation and weighs 174 kg.

OEPS-27 Applications


Combat Aircraft Su-27 Su-27UB Su-30 Su-30MK Su-30MK2 Su-30MKI Su-30MKK Su-33

OEPS-27 Specifications

Coverage
Azimuth Coverage: 120 �
Coverage in Elevation: 75 �
Weight
Weight: 174 kilogram (384 pound)
CEP: Circular Error Probable
Meters (m)   Kilometers (km)   Nautic Miles (nm)   Inch (in)   Yard (yd)   Foot (ft)   Millimeter (mm)
Pound (lb)   Kilogram (kg)   kN (KiloNewton)   Ton (t)
Meters per Second (mps)   Kilometers per Hour (kph)   Knot (kt)   Miles per Hour (mph)
Liter (l)   Galon (gl)
Year (yr)   Minutes (min)   Second (sec)
Shaft-Horse-Power (shp)

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