AlmightyTallest
Posts: 279
Joined: 2/25/2014 Status: offline
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Went back through the Russian Avionics Encyclopedia here, sort of like the Holy Book of Armaments if you're into Monty Python humor : http://aerospace.boopidoo.com/philez/Su-15TM%20PICTURES%20&%20DOCS/Overscan's%20guide%20to%20Russian%20Military%20Avionics.htm And found more ranges for the OLS series of IRST's quote:
OLS /OLS-30 / Izdeliye 52Sh Designed by UOMZ for the Su-35. Integrates ground target range finding and illumination capabilities, and possibly a TV channel like that featured on the OLS-M for MiG-29M. Field of view is -15 to + 60 elevation, ± 60 azimuth. 4 different FOVs used, 60° x 10° (wide FOV) 20° x 5° (narrow FOV), 3° x 75° (close combat vertical scan) 3° x 3° (lock on). The range of working temperatures is -50 to +60°C. Dimensions are 841 x 916 x 575mm, weight of the whole assembly is 200kg. Fitted to the Su-30MKK for China and Indian Su-30MKI. Detection range may be as high as 90km. Given the Sales brochures the 90km is probably for a tail on target that's fighter sized. quote:
OLS-27 / Izdeliye 36Sh NPO Geofizika A combined IRST/LR device for the Su-27, similar to the MiG-29's KOLS but more sophisticated, using a cooled, broader waveband, sensor. Tracking rate is over 25deg/sec. 50km range in pursuit engagement, 15km head-on. The laser rangefinder operates between 300-3000m for air targets, 300-5000m for ground targets. Search limits are ±60deg azimuth, +60/-15° in elevation. Three different FOVs are used, 60° by 10°, 20° by 5°, and 3° by 3°. Detection range is up to 50km, whilst the laser ranger is effective from 300-3000m. Azimuth tracking is accurate to 5 secs, whilst range data is accurate to 3-10m. Targets are displayed on the same CRT display as the radar. Weighs 174kg. OLS-27K for Su-33 featured new algorithms and better processor. It allegedly tracked targets in pursuit mode by their IR signature at 90 km during tests. quote:
OLS-M NPO Geophyizika Designed for the MiG-29M/K. A combined IRST/LR/TV device. Features a more sensitive cooled IR seeker, a more powerful laser ranger and a TV channel. Can detect a fighter at 35km using the IR channel, or 10km using the TV channel. Positive visual IDs can be obtained at 6km. The laser rangefinder is effective out to 8km. Laser has ground target designation/rangefinding capabilities.
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