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Directional Infrared Counter Measures

Directional Infrared Counter Measures (DIRCM) are a class of anti-missile systems produced to protect aircraft from infrared homing missiles, primarily MANPADS and similar simple systems.

Northrop Grumman AN/AAQ-24 DIRCM

Earlier infrared countermeasures like flares or hot block systems that produce random flashes of IR light are semi- or omnidirectional. This results in the missile seeker receiving relatively little IR energy due to the inverse square law. DIRCM systems instead aim their IR output directly at the missile using some source of tracking information and a trainable emitter. This allows a relatively small device to overwhelm the missile seeker by focusing all of its output on it.

Examples are produced by many aerospace companies, such as Leonardo S.p.A., Elbit Systems, Northrop Grumman, ITT Corporation, and BAE Systems. A Russian example is the 101KS-O.

Method of operation

The systems use an effective method of jamming infrared missile seekers through the sensor aperture and can be placed in either active or standby mode. In the standby mode, the aircrew must select the active mode to begin jamming infrared (IR) threats. The pulsing flashes of IR energy confuse the missile guidance system, preventing the tracking of the target aircraft.

Systems

AN/AAQ-24 Nemesis

The AN/AAQ-24 system, or "Netted Emulation of Multi-Element Signatures against Integrated Sensors" (NEMESIS),[1] is a directional infrared countermeasure (DIRCM) system. It consists of a missile warning system (AN/AAR-54), an integration unit, a processor, and laser turrets (Small Laser Transmitter Assembly, SLTA). Early versions of this system used an arc lamp to generate the jammer signal. The newer versions of this system produced by Northrop Grumman use diode-based pump systems and are known by the name GUARDIAN. These systems are intended for potential fitting to commercial carriers pending the completion of multiple tests on the viability of such options.

The AN/AAQ-24 system is installed in the Northrop Grumman Guardian system marketed for commercial aircraft.[2] The system will be installed by 2025[3] on C-17 Globemaster III, MC-130, CV-22, and the CH-53E Super Stallion.

Large Aircraft Infrared Counter-Measure system (LAIRCM) was a US Military requirement for protecting its large aircraft from infrared-guided missiles.[4] The AN/AAQ-24 Nemesis system was produced to serve this requirement.

LAIRCM-Lite is a C-17 program that uses a combination of laser jamming DIRCM and flares due to the limited availability of LAIRCM components.

101KS-O

The 101KS-O is a DIRCM system mounted on the Sukhoi Su-57 fighter jet. It has sensors that are placed in turrets, which are mounted on two points: the dorsal spine and the forward fuselage under the cockpit. It uses modulated laser-based countermeasures to confuse or destroy incoming missiles' tracking mechanisms.[5] The 101KS-O is the first DIRCM that is deployed on any fighter aircraft.[6][7]

See also

References

  1. ^ Brett Tingley (1 December 2019). "The Navy's Secretive And Revolutionary Program To Project False Fleets From Drone Swarms". TheDrive. Retrieved 28 November 2022.
  2. ^ "Northrop Grumman Completes Design of Commercial Aircraft Protection System". Northrop Grumman. Retrieved 17 April 2020.
  3. ^ "Northrop Grumman receives $3.6 Billion contract for Large Aircraft Infrared Countermeasure systems". MilitaryLeak. 5 January 2019. Retrieved 17 April 2020.
  4. ^ "Large Aircraft Infrared Countermeasures (LAIRCM)". Global Security. from the original on 18 November 2001. Retrieved 13 April 2020.
  5. ^ . Global Defence Watch. Archived from the original on 3 December 2018.
  6. ^ Tahar, Abraham Ait (1 April 2019). "Russia's Su-57 Next Generation Fighter Shoots Lasers to Blind Enemy Missiles - A Look at the Directional Infrared Countermeasures System". Military Watch Magazine.
  7. ^ Rogoway, Tyler (30 April 2018). "No, The Su-57 Isn't 'Junk:' Six Features We like On Russia's New Fighter". The Drive.
  • Global Security

External links

directional, infrared, counter, measures, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, s. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Directional Infrared Counter Measures news newspapers books scholar JSTOR April 2020 Learn how and when to remove this template message Directional Infrared Counter Measures DIRCM are a class of anti missile systems produced to protect aircraft from infrared homing missiles primarily MANPADS and similar simple systems Northrop Grumman AN AAQ 24 DIRCM Earlier infrared countermeasures like flares or hot block systems that produce random flashes of IR light are semi or omnidirectional This results in the missile seeker receiving relatively little IR energy due to the inverse square law DIRCM systems instead aim their IR output directly at the missile using some source of tracking information and a trainable emitter This allows a relatively small device to overwhelm the missile seeker by focusing all of its output on it Examples are produced by many aerospace companies such as Leonardo S p A Elbit Systems Northrop Grumman ITT Corporation and BAE Systems A Russian example is the 101KS O Contents 1 Method of operation 2 Systems 2 1 AN AAQ 24 Nemesis 2 2 101KS O 3 See also 4 References 5 External linksMethod of operation EditThe systems use an effective method of jamming infrared missile seekers through the sensor aperture and can be placed in either active or standby mode In the standby mode the aircrew must select the active mode to begin jamming infrared IR threats The pulsing flashes of IR energy confuse the missile guidance system preventing the tracking of the target aircraft Systems EditAN AAQ 24 Nemesis Edit The AN AAQ 24 system or Netted Emulation of Multi Element Signatures against Integrated Sensors NEMESIS 1 is a directional infrared countermeasure DIRCM system It consists of a missile warning system AN AAR 54 an integration unit a processor and laser turrets Small Laser Transmitter Assembly SLTA Early versions of this system used an arc lamp to generate the jammer signal The newer versions of this system produced by Northrop Grumman use diode based pump systems and are known by the name GUARDIAN These systems are intended for potential fitting to commercial carriers pending the completion of multiple tests on the viability of such options The AN AAQ 24 system is installed in the Northrop Grumman Guardian system marketed for commercial aircraft 2 The system will be installed by 2025 3 on C 17 Globemaster III MC 130 CV 22 and the CH 53E Super Stallion Large Aircraft Infrared Counter Measure system LAIRCM was a US Military requirement for protecting its large aircraft from infrared guided missiles 4 The AN AAQ 24 Nemesis system was produced to serve this requirement LAIRCM Lite is a C 17 program that uses a combination of laser jamming DIRCM and flares due to the limited availability of LAIRCM components 101KS O Edit The 101KS O is a DIRCM system mounted on the Sukhoi Su 57 fighter jet It has sensors that are placed in turrets which are mounted on two points the dorsal spine and the forward fuselage under the cockpit It uses modulated laser based countermeasures to confuse or destroy incoming missiles tracking mechanisms 5 The 101KS O is the first DIRCM that is deployed on any fighter aircraft 6 7 See also EditAN ALQ 144 Infrared guided missile countermeasure system Civil Aircraft Missile Protection System Common Infrared Countermeasures program Flight Guard Infrared countermeasure first type of countermeasures Missile approach warning system Northrop Grumman GuardianReferences Edit Brett Tingley 1 December 2019 The Navy s Secretive And Revolutionary Program To Project False Fleets From Drone Swarms TheDrive Retrieved 28 November 2022 Northrop Grumman Completes Design of Commercial Aircraft Protection System Northrop Grumman Retrieved 17 April 2020 Northrop Grumman receives 3 6 Billion contract for Large Aircraft Infrared Countermeasure systems MilitaryLeak 5 January 2019 Retrieved 17 April 2020 Large Aircraft Infrared Countermeasures LAIRCM Global Security Archived from the original on 18 November 2001 Retrieved 13 April 2020 Sukhoi 57 s Targetting Pod 101KS N Spotted Global Defence Watch Archived from the original on 3 December 2018 Tahar Abraham Ait 1 April 2019 Russia s Su 57 Next Generation Fighter Shoots Lasers to Blind Enemy Missiles A Look at the Directional Infrared Countermeasures System Military Watch Magazine Rogoway Tyler 30 April 2018 No The Su 57 Isn t Junk Six Features We like On Russia s New Fighter The Drive Global Security GOES 15External links Edit 1 Retrieved from https en wikipedia org w index php title Directional Infrared Counter Measures amp oldid 1124377597, wikipedia, wiki, book, books, library,

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