Blue Origin Develops Lower-Cost Northstar Engine for New Glenn
Credit: Blue Origin
Blue Origin is developing a new rocket engine designed to significantly reduce the cost of launching its New Glenn heavy-lift vehicle. Named Northstar, the engine is expected to deliver greater thrust while requiring fewer components and less manufacturing time than the company’s existing BE-4 engine.
The announcement marks an important step in Blue Origin’s efforts to make heavy-lift space launches more affordable and increase the competitiveness of New Glenn in the commercial launch market.
Northstar promises higher performance at a lower cost
According to Blue Origin CEO Dave Limp, the Northstar engine is designed to produce approximately 715,000 pounds of thrust, compared with 640,000 pounds generated by the current BE-4 engine.
One of the most significant improvements concerns manufacturing costs. Blue Origin estimates that Northstar could cost around 25% as much to manufacture as a BE-4 engine.
The company has also simplified the engine’s architecture, reducing its total parts count by approximately 50% and lowering its weight by 30%. Around 65% of the engine can be manufactured using large-scale 3D printing, helping streamline production and reduce assembly time.
Blue Origin has already started test-firing the new engine and is working toward a production process that could allow an engine to be assembled in less than a day.
What Northstar means for New Glenn
The new engine is intended to eventually replace the BE-4 engines powering the first stage of New Glenn. The rocket currently uses seven BE-4 engines to lift its reusable booster away from the launch pad.
Both engines use liquid oxygen and liquefied natural gas as propellants, relying on an oxygen-rich staged combustion cycle. This approach allows Blue Origin to retain an established propulsion architecture while introducing manufacturing improvements.
Importantly, the transition to Northstar will not mean the end of BE-4 production. Blue Origin plans to continue manufacturing the existing engine for United Launch Alliance’s Vulcan rocket.
A broader strategy to reduce launch costs
The Northstar development is part of a wider effort to improve New Glenn’s performance and expand its capabilities. Blue Origin is also working on a new third stage, designated GS3, which is intended to support missions requiring direct delivery to geostationary orbit and beyond Earth orbit.
These developments reflect the company’s ambition to increase launch capacity while lowering the cost of access to space.
Although Northstar still needs to complete its development and testing program before entering operational service, its projected manufacturing savings could represent a major advantage for Blue Origin.
If the company achieves its cost and production targets, the new engine could help make New Glenn a more competitive option for commercial satellite operators, government missions and future lunar exploration programs.
