Lockheed Martin has completed a successful static-fire test of the Next Generation Interceptor Stage 2 rocket motor inside a high-vacuum chamber that simulated near-space conditions, advancing a critical element of the U.S. Missile Defense Agency’s homeland missile-defence programme. The test, carried out in Huntsville, Alabama, validated propulsion performance under extreme thermal and pressure stresses, with the motor meeting thrust, chamber pressure and combustion-stability targets.
L3Harris Technologies built the Stage 2 motor and has the propulsion role on NGI, supplying both stage one and stage two large solid rocket motors as well as attitude-control and divert-and-attitude-control systems. The companies are targeting an interceptor designed to engage ballistic missiles in the midcourse phase, where exo-atmospheric propulsion performance is central.
Aviation Week reported that the burn ran for full duration and included chamber conditions intended to replicate the upper atmosphere, while engineers also completed a motor-case burst test to verify structural margins. The result supports continued work toward Critical Design Review and a planned 2030 fielding goal.