RocketLab Discussion Thread

[tater]

 

[AckSed]

It's interesting to compare this to the pathfinder posted last year. (I still don't know what's up with the set of what looks to be ratchet set sockets at or near the injector head.)

This looks like a fully-fitted out test engine. I'm seeing temperature and pressure probes all over. Also seeing a turbopump down by the nozzle that taps the feed before the main oxidiser and fuel turbopumps, then seemingly flows directly into it.

Eager for more details.

[Spaceception]

Video soon?

 

[tater]

 

[Spaceception]

Looks like this may have slipped under the radar here, too distracted by the pictures  

https://www.rocketlabusa.com/updates/rocket-lab-completes-archimedes-engine-build-begins-engine-test-campaign/

tl;dr

• They're planning to reuse each engine for at least 20 launches (can definitely be increased down the line)
• Each engine produces 733 kN or 165,000 lbf,  for a combined thrust of 1,450,000 lbf, which with its payload capacity, makes it roughly equal to Falcon 9 v1.1
• The engine campaign wasn't given details when it'll start or end, but they reiterated a mid-2025 launch date for Neutron.
• The Archimedes engine is supposed to be very close to a flight article, and they spent extra time to build up all the teams and infrastructure needed for operations, which contributed to a launch delay.
• Mentioned a completion of the carbon composite structures for the faring panels, stage 1/2 tanks, and stage 1 reusable structure.
• Arc-Vac is designed to be restarted up to 6 times in space for payload delivery.
• Mentioned intentionally developing the engine a couple times to be within medium-capability, to lower stress on the engine, extend its operational lifetime, and aid in "[meeting} the rapidly reusability requirements of Neutron." I wonder what kind of average turnaround times they're expecting to achieve, and what kind of record they can set for themselves.

[tater]