Rocket Lab Initiates Archimedes Engine Testing Phase Following Build Completion

Rocket Lab Initiates Archimedes Engine Testing Phase Following Build Completion
by Clarence Oxford
Los Angeles CA (SPX) May 07, 2024

Rocket Lab USA, Inc. (Nasdaq: RKLB) has announced the completion of its first Archimedes engine assembly, the new 3D printed, reusable engine for the Neutron medium lift launch vehicle. The company has launched an intensive test campaign with several engine system activations leading up to the initial Archimedes hot-fire.

Testing will occur at Rocket Lab's engine test stand at NASA's Stennis Space Center in Mississippi. Archimedes, powered by liquid oxygen and methane, is designed for high reusability with a stress-minimized operation and a reuse target of 20 launches per engine.

At full capacity, it can generate 165,000 lbf (733 kilonewtons), totaling 1,450,000 million lbf across Neutron's first stage. Key 3D printed components such as turbo pump housings, pre-burner and main chamber components, valve housings, and engine structural components will be tested.

The campaign includes numerous component, subsystem, and all-up system tests to verify the engine's transient start-up, steady-state, and shut-down capabilities. The testing timeline is crucial for Neutron's first launch, now scheduled for no earlier than mid-2025.

"Having a completed Archimedes engine on the test stand is an inflection point in Neutron's development program. Now we've entered the home stretch where we breathe fire and refine the engine in preparation for first flight," stated Peter Beck, Rocket Lab founder and CEO.

"What we've taken to the test stand is very close to a flight-like engine, and with our production infrastructure in place, we're well-positioned for rapid development and qualification of Archimedes. We took the time to bring a mature design to the stand and to set up the experienced team, manufacturing line, and test facilities needed for long-term production."

Rocket Lab is simultaneously producing subsequent Archimedes engines, with long-lead 3D printed components already manufactured and undergoing analysis ahead of full assembly at the company's Engine Development Complex in Long Beach, California.

Recent achievements also include the completion of carbon composite flight structures for Neutron's fairing panels, Stage 1 and Stage 2 tanks, and the reusable Stage 1 structure. Infrastructure developments continue at Neutron's dedicated launch site at Wallops Island, Virginia, including foundation concrete works for the launch mount and propellant and gas storage facilities, and installation of a 278 ft water tower.