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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

Azimuth Coverage: 120 �
Coverage in Elevation: 75 �
Weight: 174 kilogram (384 pound)
CEP: Circular Error Probable
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