L3Harris moves forward on Air Force plan to use commercial internet for lightweight SATCOM terminals

L3Harris and other DEUCSI contractors will help communicate with military systems through several different commercial space internet constellations.
March 26, 2026
3 min read

Key Highlights

Questions and answers:

  • What is the DEUCSI project aiming to develop? DEUCSI focuses on creating small, lightweight satellite communications (SATCOM) terminals for military aircraft that can connect to commercial space internet constellations.
  • How will DEUCSI improve military communications? It will enable resilient, high-throughput, globally available communications by using commercial satellites in low, medium, and geostationary Earth orbits, allowing seamless data sharing across land, sea, and air forces.
  • What makes DEUCSI’s “path-agnostic communications” unique? Path-agnostic communications allow users to connect reliably anywhere in the world without needing to specify which communication nodes or networks to use, increasing flexibility and reliability.

WRIGHT-PATTERSON AFB, Ohio – Space communications experts at L3Harris Technologies Inc. in Camden, N.J., are moving ahead on a project to help the U.S. Air Force capitalize on commercial space internet satellites to develop a new lightweight communications terminals for military aircraft.

Officials of the Air Force Research Laboratory at Wright-Patterson Air Force Base, Ohio, announced a $34.1 million order to L3Harris on Monday for the Defense Experimentation Using Commercial Space Internet (DEUCSI) project.

L3Harris and other DEUCSI contractors will establish the ability to communicate with military platforms through several different commercial space internet constellations. This order brings the total value of the L3Harris DEUCSI contract to $$213 million.

The DEUCSI project seeks to develop small and lightweight satellite communications (SATCOM) systems that use commercial space internet constellations that easily integrate onto aircraft.

Airborne SATCOM

These airborne SATCOM systems will provide resilient, high throughput, globally available, and reliable communications using commercial internet satellites that operate in low, medium, and geostationary Earth orbits.

L3Harris won an original $33.6 million DEUCSI contract in September 2024. Other DEUCSI contractors are Intelsat General Communications LLC in McLean, Va.; the RTX Corp. Raytheon segment in McKinney, Texas; the Northrop Grumman Mission Systems segment in San Diego; the Lockheed Martin Aeronautics segment in Fort Worth, Texas; and Ball Aerospace & Technologies Corp. in Boulder, Colo.

DEUCSI seeks to find new ways of information distribution among land, sea, and air forces quickly to support high-speed decision-making by moving and sharing data seamlessly among fixed and mobile operating locations using constantly available, high-bandwidth, beyond-line-of-sight communications.

Path-agnostic communications

DEUCSI space-based capability will be called path-agnostic communications because its users will be able to communicate reliably to any location in the world without explicitly specifying which nodes of a communication network to use.

The vision for path-agnostic communications is becoming possible due to the burgeoning commercial space industry, Air Force officials say. Several commercial companies plan to establish space internet constellations consisting of hundreds to thousands of commercial satellites, each to create global internet services.

This approach differs radically from traditional military satellite communications programs in which the government typically specifies and funds every aspect of the program, Air Force researchers point out.

Commercial space internet

Instead, taking advantage of the commercial space internet will concentrate government efforts on the few areas that are unique to Air Force applications.

The project has three phases: establish connectivity between several Air Force sites using commercial demonstration satellites and terminals; expand connectivity to many Air Force assets by proliferating user terminals to several locations and vehicle types; and special experiments to address military-unique requirements not otherwise met by commercial space internet vendors.

On this order L3Harris will do the work in Salt Lake City, and should be finished by August 2027. For more information contact L3Harris online at www.l3harris.com/newsroom/editorial/2023/04/satellite-communications-virtualization-new-expanding-frontier, or the Air Force Research Laboratory at www.afrl.af.mil.

About the Author

John Keller

Editor-in-Chief

John Keller is the Editor-in-Chief, Military & Aerospace Electronics Magazine--provides extensive coverage and analysis of enabling electronics and optoelectronic technologies in military, space and commercial aviation applications. John has been a member of the Military & Aerospace Electronics staff since 1989 and chief editor since 1995.

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