What Happened to Blue Origin's New Glenn Upper Stage Development Challenges and Mission Anomalies?

Blue Origin's ambitious New Glenn heavy-lift rocket, designed to compete with industry leaders like SpaceX, has encountered a series of significant development challenges and mission anomalies, particularly concerning its upper stage and the foundational BE-4 engines. The BE-4 engine, which powers New Glenn's first stage and United Launch Alliance's Vulcan Centaur, faced turbopump failures, combustion instability, and full-duration test failures throughout its protracted development, causing numerous delays for the New Glenn program.

A notable incident occurred in June 2023, when a BE-4 engine exploded during an acceptance test at Blue Origin's West Texas facility, destroying the engine and heavily damaging the test stand. While Blue Origin stated it could still meet engine delivery commitments, this event highlighted ongoing complexities in engine production and reliability. Further setbacks emerged in August 2024, when Bloomberg News reported two failures during New Glenn's readiness efforts. One incident involved the crumpling of a first-stage section due to worker error, while the other directly impacted the upper stage: an upper rocket portion for the third scheduled launch failed during stress testing, resulting in an explosion. Blue Origin acknowledged constant testing and anomalies as part of making hardware more robust, but these incidents underscored the difficulties in bringing the large rocket to operational status.

New Glenn's maiden flight (NG-1) on January 16, 2025, successfully reached orbit with its second stage, deploying the Blue Ring Pathfinder. However, the first stage booster was lost during its landing attempt due to the BE-4 engines failing to re-ignite properly for the descent burn, marking a partial failure in the reusability goal. The second mission (NG-2) in November 2025, carrying NASA's ESCAPADE probes, achieved both successful orbital insertion and the first successful landing of a New Glenn first stage.

However, the program faced another significant challenge on April 10, 2026, when rumors indicated a major problem at Blue Origin's 2CAT test facility, possibly involving a New Glenn second stage or ground support equivalent. The anomaly was reportedly powerful enough to damage the roof of the test building, suggesting a significant explosion and potential delays for the overall New Glenn program.

The most recent and direct upper stage failure occurred on April 19, 2026, during New Glenn's third mission (NG-3). The mission successfully launched and saw the first reuse of a New Glenn first-stage booster, which landed safely on the 'Jacklyn' droneship. However, the upper stage, powered by two BE-3U engines, failed to relight as planned, resulting in the AST SpaceMobile BlueBird 7 satellite being placed into an "off-nominal orbit." Blue Origin confirmed payload separation and power-on for the satellite but provided no immediate details on whether the spacecraft could reach its intended operational orbit, marking a clear in-flight performance issue for the upper stage. This incident highlights ongoing complexities in achieving consistent upper stage performance and mission success for Blue Origin's heavy-lift vehicle.