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Mensaje: <blockquote data-quote="Delfin" data-source="post: 710203" data-attributes="member: 2582">Los cazas modernos (no sólo los rusos...) tienen, además del RADAR, sistemas ópticos para el control de amenazas aéreas. Si te fijás bien en la primera imagen, hay DOS sistemas actuando simultáneamente sin el radar:<ul> <li data-xf-list-type="ul">ESM/RF Targeting Receiver Detection Range</li> <li data-xf-list-type="ul">Advanced IRST Detection Range (OLS-31?)</li> </ul>Los RADARES son indispensables para el combate moderno, especialmente para el BVR, pero... llevar prendido el radar es como salir del interior de tu casa de noche a buscar a los asaltantes con una linterna encendida... :rofl: :rofl: :rofl: <img src="http://img194.imageshack.us/img194/5043/flashlight1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />El IRST OLS-30 / 31 parecería que tiene un alcance de entre 80 y 100 km IRST = Infra Red Search & Track OLS = Optical Locator System<img src="http://aerospace.boopidoo.com/philez/Su-15TM%20PICTURES%20&%20DOCS/Overscan%27s%20guide%20to%20Russian%20Military%20Avionics_archivos/ols-52sh.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Electro-Optical Systems "Another attractive design feature of the Flankers is the large IRST housing, which can fit an aperture larger than competing Western IRST systems - the more photons the IRST can capture, the greater its detection range potential. The baseline OLS-27 IRST can scan a 120x75 degree field of regard, and cover as field of view as narrow as 3x3 degrees but has poor sensitivity with a head on detection ranges cca 8 nautical miles. The integrated laser rangefinder is effective to about 1.5 nautical miles. Specifications for the OLS-30 have not been disclosed - it is known that further development is under way on an IRST/FLIR design similar in concept to the Eurofighter's Pirate system. As with radars, IRST and FLIR aperture size matters, and the Sukhoi is in a commanding position with the existing OLS-27/30 package. With commercial technologies such as Quantum Well longwave/multiband imagers of 800x600 pixel resolution in the EU market, it is only a matter of time before this technology finds its way into an OLS-30/31 derivative. Current US IRSTs using older MCT imaging arrays have detected fighters at distances of many tens of miles.The advent of HDTV compatible CCD and CMOS daylight imaging devices in COTS applications opens up the possibility of a dual band derivative of the OLS-27/30 package, longer term"Fuente: <a href="http://www.ausairpower.net/APA-Flanker.html">http://www.ausairpower.net/APA-Flanker.html</a>“The OLS-27 IRST has a range of 100km, which allows the fighter to search for targets without using his radar, which might give away his position.”Fuente: AIR FORCE SYSTEMS<a href="http://www.uscc.gov/researchpapers/2004/04fisher_report/7airforcesystems.htm">http://www.uscc.gov/researchpapers/2004/04fisher_report/7airforcesystems.htm</a>“Laser-optical locator systemOLS-30 laser-optical locator system to include a day and night FLIR capability and is used in conjunction with the helmet mounted sighting system. The OLS-30 is a combined IRST/LR device using a cooled, broader waveband, sensor. Detection range is up to 90 Km, whilst the laser ranger is effective to 3.5 Km. Targets are displayed on the same LCD display as the radar.”Infra-red search and trackFrom Wikipedia, the free encyclopedia“An infra-red search and track (IRST) system (sometimes known as infra-red sighting and tracking) is a method for detecting and tracking objects which give off infrared radiation such as jet aircraft and helicopters. IRST is a generalized case of FLIR, i.e. from Forward-Looking to allround situational awareness. Such systems are passive, meaning they do not give out any radiation of their own, unlike radar.….An IRST system may also have a regular magnified optical sight slaved to it, to help the IRST-equipped aircraft identify the target at long range. As opposed to an ordinary FLIR (Forward Lookin InfraRed)system, an IRST system will actually scan the space around the aircraft similarly to the way in which mechanically (or even electronically) steered radars work. When they find one or more potential targets they will alert the pilot(s) and display the location of each target relative to the aircraft on a screen, much like a radar. Again similarly to the way a radar works, the operator can tell the IRST to track a particular target of interest, once it has been identified, or scan in a particular direction if a target is believed to be there (for example, because of an advisory from AWACS or another aircraft).Note that, like infra-red homing seekers, an IRST is more likely to detect a target with its engine exhaust pointed towards the detector than away from it. This means that many jet aircraft will be detected at longer ranges if they are flying away from the IRST-equipped aircraft rather than towards it. However, most IRST systems are sensitive enough to detect the heat of a jet from head-on as well, either infra-red energy generated from the hot air coming out of the engines, from air friction heating the airframe, or both.IRST systems can incorporate laser rangefinders in order to provide full fire-control solutions for cannon fire or launching missiles. The combination of an atmospheric propagation model, the apparent surface of the target, and target motion analysis (TMA) IRST can calculate the range.”Fuente: <a href="http://en.wikipedia.org/wiki/IRST">http://en.wikipedia.org/wiki/IRST</a></blockquote>

Verificación: Guerra desarrollada entre Argentina y el Reino Unido en 1982