Orange, VA
Successful booster-to-ramjet transition test validates key propulsion event for next-generation long-range precision strike capability
Lockheed Martin [NYSE: LMT], L3Harris [NYSE: LHX] and the U.S. Army have successfully completed a major advanced propulsion milestone for Lockheed Martin’s Precision Strike Missile Increment 4 offering.
During a recent Direct Connect Transition Test, the development missile demonstrated a successful booster-to-ramjet handoff inside L3Harris’ specialized high-speed air-breathing propulsion facility. The test validated a critical propulsion transition event and marked an important risk-reduction achievement as the program moves closer to flight testing.
The completed test removes a primary technical barrier ahead of Lockheed Martin’s planned PrSM Increment 4 flight testing, which is expected to begin this fall. The missile is designed to deliver ranges beyond 1,000 kilometers while remaining compatible with existing High Mobility Artillery Rocket System (HIMARS) and M270 launchers.
By preserving compatibility with current launch platforms, transport containers and logistics infrastructure, including C-130 air mobility, the system is intended to provide the U.S. Army with increased long-range precision strike capability without requiring new launchers or major supply chain changes.
“The Direct Connect Transition Test shows the missile’s core propulsion is not a future concept but a validated capability that can be loaded onto current HIMARS and M270 launchers quickly, dramatically shortening the time to warfighter delivery,” said Randy Crites, vice president, Lockheed Martin Advanced Programs.
The PrSM Increment 4 design is expected to extend the range of the baseline PrSM through a ramjet-powered propulsion system while maintaining compatibility with existing Army platforms. The configuration combines high-control authority and high terminal velocity, supporting engagement against relocatable land targets and moving maritime targets while complicating adversary interception.
“Advancing our next-generation propulsion system quickly through ground testing so we are ready now for flight testing confirms our ability to deliver on the Army’s mission requirements,” said Scott Alexander, president, Missile Propulsion, Missile Solutions, L3Harris. “L3Harris’ propulsion system strikes a balance between capability and affordability by meeting the Army’s requirements for speed, range and lethality.”
The milestone follows extensive engine ground testing in both booster and ramjet modes. A planned flight test later this year is expected to demonstrate near-tactical range performance and further validate the propulsion technology for future long-range strike missions.
Lockheed Martin and L3Harris have also invested more than $300 million combined in additive manufacturing and automation to support a rapid-production hardware pipeline and an accelerated fielding schedule.
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