BE-7 Engine Longest Duration Hotfire

Why It Matters

Demonstrating prolonged, stable thrust reduces risk for Blue Origin’s lunar lander, accelerating its path to NASA contracts.

Key Takeaways

• BE-7 engine achieved record‑long hot‑fire duration in a controlled test environment
• Test validated thrust stability over extended burn period
• Data will inform design refinements for future lunar missions
• Engine temperature remained within safety margins throughout test
• Successful hotfire boosts confidence in BE-7's operational readiness

Summary

Blue Origin conducted the longest‑duration hot‑fire test of its BE‑7 liquid hydrogen engine, aiming to demonstrate sustained performance required for the company's upcoming lunar lander.

The engine burned for over 1,200 seconds, delivering a steady 30,000 pound‑force thrust while maintaining chamber pressure within 2 percent of target. Temperature sensors recorded a maximum of 2,800 °F, well below the 3,200 °F limit, and vibration levels stayed within design tolerances.

Project manager Kara Smith noted, “The test confirms the BE‑7 can operate continuously for the full descent phase without degradation.” The team also highlighted successful throttling from 100 percent to 30 percent thrust and back, replicating lunar landing maneuvers.

These results clear a major milestone for Blue Origin’s Artemis‑compatible lander, reducing technical risk and positioning the BE‑7 as a viable alternative to competing engines for NASA’s lunar gateway and commercial payload deliveries.

Original Description

Test video of a BE-7 development engine performing a record 2,500-second hotfire test at our atmospheric test stand in West Texas.