Blue Moon on descent to the lunar surface.


Blue Moon's Engine

The high specific impulse, deep throttling and restart capabilities of the BE-7 make the engine ideal for large lunar payload transport, while enabling Blue Moon's oxygen/hydrogen fuel cell power system.


BE-7 is an additively manufactured, high-performance, dual-expander cycle engine, generating 10,000 lbf (44.5 kN) thrust.

We are maturing the design, manufacturing hardware and have begun hotfiring the engine.