Wednesday 11 October 2017

Northrop Grumman Systems Corp awarded $25M contract for Phase II of the Defensive Electronic Countermeasures Suite Upgrade for the CH-53K


10 Oct, 17, Source: US DoD

Northrop Grumman Systems Corp., Rolling Meadows, Illinois, is being awarded $25,036,119 for cost-plus-fixed-fee task order 0512 against a previously issued basic ordering agreement (N00019-15-G-0026) for Phase II of the Defensive Electronic Countermeasures Suite Upgrade for the CH-53K.  This task order includes non-recurring engineering support to design, test and integrate the AN/AAQ-24 Large Aircraft Infrared Countermeasures Systems Processor Replacement with the Advanced Threat Warning Missile Warning Sensors, the AN/APR-39D(V)2 Radar Warning Receiver System, the AN/ALE-47(V) Countermeasures Dispensing System with the Power PC Processor Upgrade and the Avionics Management System for use on the CH-53K.  Work will be performed in Rolling Meadows, Illinois (97.5 percent); Stratford, Connecticut (1 percent); West Palm Beach, Florida (1 percent); and Cedar Rapids, Iowa (0.5 percent), and is expected to be completed in September 2021.  Fiscal 2017 research, development, test and evaluation (Navy) funds in the amount of $25,036,119, will be obligated at time of award, none of which will expire at the end of the fiscal year.  The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.

Original post: helihub.com

AN/AAQ-24 Large Aircraft Infrared Countermeasures Systems

The sensor turret of Northrop Grumman’s AN/AAQ-24 large aircraft infrared countermeasure (LAIRCM) deployed on a U.S. Marine Corps CH-53 Super Stallion helicopter. (Photo: Northrop Grumman)

The LAIRCM (Large Aircraft IR CounterMeasures) has been developed to protect US large aircraft from IR guided man-portable surface-to-air missiles. It is a derivative of the proven AN/AAQ-24 Nemesis Directional IR CounterMeasure (DIRCM) system. LAIRCM uses missile warning system to detect and incoming missile, then the protection system directs a pointer-tracker to the missile's seeker jamming it with a IR laser energy beam.

The system is a fully autonomous system not requiring inputs coming from the aircraft crew. LAIRCM is being offered to the commercial aviation segment as a protection mechanism against any potential terrorist attack using man-portable, shoulder-launced surface-to-air missiles. Source: deagel.com

AN/APR-39D(V)2 Radar Warning Receiver/Electronic Warfare Management System

Northrop Grumman

The Northrop Grumman APR-39D(V)2 Radar Warning Receiver (RWR)/Electronic Warfare Management System (EWMS) is being designed to maximize survivability by improving aircrew situational awareness via interactive management of all onboard sensors and countermeasures. The APR-39D(V)2 will merge the C(V)2 baseline with the Northrop Grumman Digital Receiver product line, providing advanced RWR capability for today’s and tomorrow’s RF threat environment. The system will feature the latest technology in a small, lightweight configuration that protects a wide variety of fixed-, rotary- and tilt-wing aircraft from today's most modern threats. Source: northropgrumman.com

AN/ALE-47(V) Countermeasures Dispensing System


In response to automated warnings of radar, infrared, laser and other threats against aircraft, the AN/ALE-47 Countermeasures Dispenser System (CMDS) both assists the crew in staying aware of the threats, and managing the deployment of electronic warfare devices that operate externally to the vehicle.[1] "Electronic", in this context, covers enemy sensors across the electromagnetic spectrum. Electronic defense includes, as well as receivers and computers that detect and analyze threats, both countermeasures that are part of the aircraft, but also expendables that are released from it.[2]

In other words, it both acts as an electronics countermeasures suite controller and as an electronic warfare expendables dispenser. It replaces the AN/ALE-39. Alternatively, it can be controlled by other control systems, such as the AN/ALQ-213.

These expendables include radar-reflecting chaffinfrared countermeasures to confuse heat-seeking missile guidance, and disposable radar transmitters. In addition to active and passive countermeasures, expendables now include sensors for both electronic supportelectronic warfare, and other intelligence functions such as chemical weapon detection using materials MASINT. In addition to the truly expendable items usually released as cartridges, a modern dispenser system will control towed decoys that lure radar- and infrared-guided missiles that avoid the other countermeasures. Source: citizendium.org

CH-53K Super Stallion: Details

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