blackadam Posted January 21, 2015 Posted January 21, 2015 (edited) Semi active radar homing vs active radar homing AIM-7F/R-27EM vs AIM-120C/R-77 Read This: Launch distance (with R-27 type missile at target with RCS (Radar Cross Section) 5 m2), 70 km Homing head lock-on range to target with RCS 5 m2, 20 km http://www.airbase.ru/hangar/russia/vym ... indexe.htm R-27AE is a ARH version of the R-27 Anyone with information seeker head (WGU-44/B) of the AIM-120C (and R-77 head seeker) against specific RCS ? and band (I, X or J) of the head seeker 9B-1348E radar (Russian source please) However, we only need to look at the battle of AIM-120 and AIM-7, R-27, the two AIM-7 and R-27 (SARH) are effective against the target maneuverability such as the MiG-21, MiG-29. However AIM-120 is relatively poor as against the targeted poor mobility or even no RWR, ECM as the MiG-25, MiG-29B (in Yugoslavia and Iraq) A more recent Operation Southern Watch engagement occurred on January 5 th , 1999 when two Iraqi MiG-25s violating the southern “no-fly” zone illuminated two F- 15Cs with their BVR radar. xxiv The F-15s responded by firing three AIM-7 Sparrows and one AIM-120 AMRAAM. All missiles missed. Subsequently, two Navy F-14s fired two AIM-54 Phoenix missiles at the two MiG-25s. Despite the Phoenix being the most expensive—and supposedly most capable—air-to-air radar-guided missile ever made, both missed. The violating MiG-25s escaped to fight another day http://pogoarchives.org/labyrinth/11/09.pdf https://books.google.com.vn/books?id=AsybAwAAQBAJ... 5th 1999 MIG 25&source=bl&ots=OQuEM1q5yO&sig=xxwHAHql0IrYUsOYsQEbr4uFQC0&hl=vi&sa=X&ei=cn6nVNe0DsTioAS9moCYAQ&redir_esc=y#v=onepage&q&f=false The performance of the AIM-120A/B/C models in combat to date has not been spectacular. Test range trials have resulted in stated kill probabilities of 85 percent out of 214 launches for the AIM-120C variant. Combat statistics for all three variants are less stellar, amounting to, according to US sources, ten kills (including a friendly fire incident against a UH-60) of which six were genuine BVR shots, for the expenditure of just over a dozen AIM-120 rounds. The important parameter is that every single target was not equipped with a modern defensive electronic warfare package and therefore not representative of a state-of-the-art Flanker in a modern BVR engagement. Against such "soft" targets the AIM-120 has displayed a kill probability of less than 50 percent It is an open question whether the AIM-120D when challenged with a modern DRFM (Digital RF Memory) based monopulse trackbreaking jammer will be able to significantly exceed the 50 percent order of magnitude kill probability of prior combat launches, let alone replicate the 85 percent performance achieved in ideal test range conditions http://www.ausairpower.net/APA-Rus-BVR-AAM.html In fact the seeker head AIM-120C WGU-44 / B-band operation in the I-band (, it can be trapped/jamming by the SPS-171 / L005S Sorbtsiya-S H / I band ECM. However, according to some other sources seeker of AIM-120 is X band Description: The missiles are standard solid state AIM-120 A,B, or C series all weather- all aspect air to air rounds which use a Northrop strap down inertial guidance unit for initial flight phase and a Raytheon I/J Band active radar all-aspect look down seeker for terminal homing. It also has home on Jam capability "Jane's Land Based Air Defence" 1999-2000 http://forums.ubi.com/archive/index.php/t-116298.html http://what-when-how.com/military-weapons/missilesrocketsbombs-military-weapons/ The AMRAAM is housed in a light-weight structure of steel and titanium. The airframe is divided into four major sections: guidance, warhead, propulsion and control. The four wings and fins are detachable. The guidance section features an active X-band radar terminal seeker http://www.f-16.net/f-16_armament_article3.html http://www.ausairpower.net/amraam.html http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA355385 But the X-band radar has one weakness is its ability to reflect the reduced RCS newer aircraft such as Su-35, J-10B, F-35, T-50 less, so if the seeker AIM-120 X -band it does not change battle In the new structure were used composite materials, which reduced the weight by 20%. The lines of the plane have been refined in order to reduce the radar energy reflected in the X band, the intakes of the engines are larger to allow a better flow of air, flaperons are large, it does not have canards * and the tail sting is smaller, moreover, it does not have the dorsal aerodynamic brake, its functions are now performed by active rudder . The fuselage has better aerodynamics and lifting ability in general. http://sukhoitributeenglish.blogspot.com/ F-35 was designed from the outset to be less stealthy against X-band radar than the F-22. https://defenseissues.wordpress.com/2013/10/19/how-stealthy-is-the-f-35/ But it was nothing compared to EW technologies like MSP-418K DRFM. Modern DRFM will beat most Active radar homing missile, need a large number ARH missile to destroy one target Thus, the smaller the target RCS as F-16E, MiG-21, F-22 missiles ARH very difficult to be effective, because the detection range of the missile seeker head will fit into the range of EW / ECM of enemy fighters However, R-27EM, AIM-7F may have a better performance with less maneuverable targets as F-35, A-10, Su-25 or high mobility such as F-16/15, FA-18EF, Su-27/30, J-10/11, Typhoon, Rafale, Jas 39 if combined with an AESA radar as the aN / APG-63 (V) 3 (F-15C) or Zhuk-AE (MiG -35). Remember AESA radar has a great ability that is constantly jumping frequency / LPI it allows the ability to hide, hard to detect by enemy RWR. SARH missiles just need targets illuminated (scan/search-detect-track-lock) by FCR and constantly updated information so that it can reach the goal, and the ability of the LPI AESA radar, the target as F-16C completely undetectable FCR (Fire-control radar) threat, due to the F-16C RWR absolutely no warning capabilities being illuminated by radar FCR (Zhuk-AE, APG-63 (V) 3) So I mean BVR in the future, to be effective to use FCR AESA and SARH missiles, it is much more efficient than the AIM-120C7, R-77M, PL-12. However, there are ARH missiles capable of effective BVR, which is R-77M1, PL-21, and AIM-120D Meteor. They can take advantage of the possibility of high speed ramjet engine to surprise the RWR systems, EW/ECM of enemy fighters Imagine like RPG-7 & Sa-7 can shoot down a helicopter AH-64, although it (AH-64) equipped with infrared jamming defense system, but it is useless with RPG-7 but IR jammer can beat SA-7 I call it the terminology Sniper fighter aircraft Edited January 21, 2015 by blackadam
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