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Lockheed Completes PRSM Test Before Stop-Work Order

June 4, 2026

1 min read

Key Takeaways

Lockheed completed a final ground test of PRSM Increment 4.
Test demonstrated 'flawless' booster-to-ramjet handoff.
US Army issued a stop-work order after the test.
Lockheed and L3Harris collaborated on the project.

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Strategic Implications

This successful test may indicate Lockheed's progress in developing advanced missile systems, which could strengthen its position in the defense market. The demonstration of a flawless booster-to-ramjet handoff suggests significant technological advancements, which may have implications for future missile development.

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What Happened

Successful Booster-To-Ramjet Handoff Demonstrated In Key Test

Lockheed Martin announced the successful completion of a final ground test for the US Army’s surface-to-surface missile project, PRSM Increment 4, before receiving a stop-work order. The test, conducted in collaboration with supplier L3Harris, demonstrated a ‘flawless’ booster-to-ramjet handoff, a key feature of the combined-cycle propulsion system. This development was reported by Aviation Week, a leading source of aerospace and defense news.

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