SOUTHWEST RESEARCH INSTITUTE

Communications Engineering

Electronic Warfare Countermeasures Receiving Set (AN/ALR-20A)

 

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  image of Schematic of AN/ALR-20A Countermeasures Receiving Set
 

Schematic of AN/ALR-20A Countermeasures Receiving Set

The AN/ALR-20A Countermeasures Receiving Set is a complex electronic warfare system installed on the B-52 G and B-52 H aircraft. It consists of 11 Line Replaceable Units (LRUs) distributed throughout the airframe. Numerous modifications and upgrades of the AN/ALR-20A prevented proper configuration control of the design. Specifications for individual LRUs had never been developed. Most documentation was either incomplete or out of date, making it difficult to establish actual system parameters. Prime contractor assistance was not possible because the original development contractor no longer existed.

The U.S. government contracted with Southwest Research Institute (SwRI) to analyze these support problems and other reliability and maintainability deficiencies and then develop recommended solutions for them. SwRI reviewed the available documentation and performed extensive electrical testing on the system. SwRI performed testing on the aircraft at various places, including:

  • Air Force depot

  • Intermediate shops

  • SwRI

The project team assembled a complete operating AN/ALR-20A system as a hot mock-up at SwRI so that the team could perform an accurate characterization of the system interfaces.

SwRI identified a number of system problems and developed solutions, including:

  • Qualification of replacement components to relieve parts shortages

  • Revision of maintenance procedures to reduce failures

  • Determination of component changes to overcome alignment problems

For more information about electronic warfare countermeasures receiving set (AN/ALR-20A) capabilities at SwRI or how you can contract with SwRI, please contact Tom Untermeyer at tuntermeyer@swri.org or (210) 522-5040. We can offer you the best approach for solving your communications engineering problem.

 

Contact Information

Tom Untermeyer

Communications Engineering

(210) 522-5040

tuntermeyer@swri.org

Related Terminology

communication devices

communication networks

radar systems

communication systems

RF systems

radio frequency engineering

RF engineering

analysis

specification development

circuit design

fabrication

consulting

COTS integration

custom instruments

test systems

prototype development

modeling

simulation

reverse engineering

replacement engineering

communications engineering

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Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

August 15, 2008