The Artemis program, initiated by NASA, aims to return humans to the Moon and establish a sustainable presence by the end of the decade. Central to this endeavor is the Space Launch System (SLS), a powerful rocket designed to propel astronauts and cargo beyond Earth's orbit. Integral to the SLS's functionality are its avionics systems, which ensure precise navigation, control, and communication during missions. L3Harris Technologies, a leading aerospace and defense company, plays a pivotal role in providing these critical avionics components for the SLS's boosters, core stage, and upper stage, thereby contributing significantly to the success of the Artemis missions.

The Role of Avionics in the Space Launch System

Avionics encompass the electronic systems used in spacecraft for communication, navigation, control, and monitoring. In the context of the SLS, avionics are essential for:

  • Data Handling: Collecting and transmitting telemetry data regarding the rocket's performance and health.
  • Power Distribution: Managing electrical power to ensure all systems operate efficiently.
  • Sequencing and Control: Coordinating the timing of events such as engine ignition, booster separation, and stage transitions.
  • Guidance and Navigation: Ensuring the rocket follows its intended trajectory accurately.

These systems are designed to withstand the harsh conditions of spaceflight, including extreme temperatures, vibrations, and acoustic environments, ensuring the rocket's reliability and safety throughout its journey. L3Harris's avionics are integral to the SLS's boosters, core stage, and upper stage, enabling the rocket to function as a cohesive and efficient system. ([l3harris.com](

L3Harris's Contribution to the SLS Avionics

L3Harris Technologies has been a longstanding partner with NASA, providing critical technologies for various space missions. For the SLS, L3Harris supplies avionics for the following components:

  • Booster Avionics: The solid rocket boosters (SRBs) are equipped with avionics that handle data collection, power distribution, and sequencing during ascent. These systems ensure the boosters operate in harmony with the core stage, contributing to the rocket's overall performance. ([l3harris.com](
  • Core Stage Avionics: The core stage houses the main propulsion and avionics systems. L3Harris provides avionics that manage data handling, power distribution, and sequencing for the core stage, ensuring its systems function seamlessly during the mission. ([l3harris.com](
  • Upper Stage Avionics: The Interim Cryogenic Propulsion Stage (ICPS) serves as the upper stage for the SLS in the Artemis missions. L3Harris supplies avionics that control the ICPS's operations, including data handling and sequencing, to ensure successful deployment of payloads and crewed missions. ([l3harris.com](

These avionics systems are rigorously tested to meet the stringent requirements of space missions, ensuring they perform reliably under the extreme conditions of launch and spaceflight. ([l3harris.com](

Recent Developments and Deliveries

In July 2026, L3Harris delivered the four RS-25 engines for the Artemis III mission, slated for launch in 2027. These engines, previously used in the Space Shuttle program, have been upgraded with modern electronics and insulation to enhance performance and reliability for the SLS. This delivery marks a significant milestone in supporting NASA's goal of returning astronauts to the lunar surface. ([asdnews.com](

Additionally, L3Harris has been involved in providing the Mission Astronaut Communication System for the Orion spacecraft, which is integral to the Artemis missions. This system ensures reliable communication between the crew and mission control, a critical component for the success of crewed lunar missions. ([l3harris.com](

Conclusion

L3Harris Technologies plays a crucial role in the Artemis program by supplying advanced avionics systems for the SLS's boosters, core stage, and upper stage. These systems are vital for the rocket's navigation, control, and communication, ensuring the success of NASA's missions to return humans to the Moon and beyond. Through its continued partnership with NASA, L3Harris contributes to the advancement of space exploration and the realization of the Artemis program's objectives. ([l3harris.com](

Sources

  • L3Harris Technologies — Inside the Avionics That Make Artemis II Possible: How L3Harris Units Drive the Space Launch System —
  • L3Harris Technologies — L3Harris Powers First Crewed Mission Around the Moon in 50 Years —
  • L3Harris Technologies — L3Harris Delivers SLS Core Stage Engines for Artemis III Mission —
  • L3Harris Technologies — L3Harris to Provide Audio System for NASA’s First Crewed Flight to the Moon Since Apollo —
  • L3Harris Technologies — Artemis II —