Tuesday, November 15, 2016


“Air Force One” is the radio call-sign for any Air Force aircraft with the president aboard. The term is used conversationally to refer to two VC-25As, or Boeing 747-200s (serial numbers 86-28000 and 86-29000) that have pulled presidential transportation duty since 1990. George H. W. Bush was the first president to fly on one of the 747s.

                --> IRCM and other countermeasures at the tail of the fuselage. source             

The AAR-54(V) is a fourth-generation Missile Approach Warning System now in production and available for use on virtually every platform – helicopters, fast jets, and tactical and widebody aircraft. In all applications, this compact, lightweight system provides outstanding clutter rejection, long range and short shot missile detection, rapid automatic cuing to the countermeasures system, and increased situational awareness capabilities via heads-up display (HUD) or radar warning receiver (RWR) display.

Designed for high performance protection, the AAR-54 passively detects ultraviolet (UV) energy from the missile’s exhaust plume, tracks multiple sources, rapidly and accurately classifies each source, and provides threat information to the countermeasures system for optimum response.

The AAR-54 can be interfaced to a chaff/flare Countermeasures Dispenser System (CMDS) or integrated as part of a Directional Infrared Countermeasures (DIRCM) self-protection suite. With its adaptive design, all applications can use common hardware and software. System simplicity allows for internal installations or external mounting in a pod or pylon.

The AAR-54 has achieved maturity through extensive and diverse government testing
300+ live surface-to-air, air-to-air and anti-tank guided missile firings on QF-4 drone, cable car, and combat vehicles
100+ hours of clutter flight tests and analysis
Six sensor system integration with CMDS on F-16 in a PIDS+ pylon installation
As an integral part of the AN/AAQ-24(V)/ARI 18246 DIRCM self-protection system, the AAR-54 has successfully passed flight testing on a Sea King helicopter and a C-130, as well as live fire testing at the White Sands Missile Range.

The AN/AAQ-24 DIRCM (Directional Infrared Countermeasure)

The AN/AAQ-24(V) Directional Infrared Countermeasure (DIRCM) system is the only DIRCM system in production today that will protect aircraft from today's infrared guided missiles.
Traditional IR countermeasures are not effective against the modern IR missiles that are growing in popularity among terrorist groups and in thirdworld countries.
 A Directional Infrared Countermeasures (DIRCM) system is required to defeat the latest and future advanced IR threats, and has a lower life cycle cost compared to other IR countermeasure approaches.Simultaneously tracks and defeats threats in clutter environmentsFast, accurate threat detection and simultaneous jamming in all current IR threat Bands (I, II and IV),Counters all fielded IR missile threats using a single generic jam waveform

Northrop Grumman AN/AAQ-24(V) NEMESIS Directional Infrared Countermeasures (DIRCM) system in action against a threat missile. Missile is tracking towards target (centre) from the right of frame before DIRCM engages the missile seeker. Missile loses guidance and control!!.

                             ---->  Northrop Grumman AN/AAQ-24(V) DIRCM laser system

Conformal antennas: the VC-25As have been retrofitted with multi-purpose conformal antennas adaptable to satellite communications systems and other purposes. They resemble Band-Aids or patches but are, in fact, antennas that appear to have no effect on the aerodynamic performance of the 747.


The MATADOR system protects a wide variety of multi-engine jet transport aircraft against first generation IR missile threats. The modular system design provides flexibility for multi-platform applications, and provides IR missile jamming capability to defeat multiple threats at the same time. 
MATADOR is a modular system, which is tailored to each aircraft to meet specific customer requirements. The system can be installed on new or in-service aircraft. Once the system is turned on prior to flight, MATADOR operates continuously without operator intervention.  
MATADOR was originally designed for and certified on large civil type aircraft.


-->  Listing of airborne countermeasures systems:<---