NASA Conducts 1st Hot Fire of New RS-25 Engine Test Series
https://www.nasa.gov/centers/stennis/news/releases/2021/NASA-Conducts-1st-Hot-Fire-of-New-RS-25-Engine-Test-Series
Mustard a écrit:Il n'était pas prévu un nouvel essai de moteur du SLS aujourd'hui ? c'est ce que disait une des dernières vidéos des frères Lisoir. A-t-il été reporté ?
https://www.nasaspaceflight.com/2021/02/nasa-completes-exploration-upper-stage-cdr-focuses-new-office-on-sls-block-1b-development/2/ a écrit:The recent GAO-21-105 audit noted that the Artemis 4 mission that would debut Block 1B and EUS is forecast to launch in March 2026.
A structural test article (STA) will be assembled at MAF and tested at the Marshall Space Flight Center (MSFC) in Huntsville, Alabama. The first flight article will then be completed and travel from Michoud to the relatively nearby Stennis Space Center in southern Mississippi for a Green Run test campaign similar to the one that the first Core Stage is going through.
Following its Critical Design Review in December, NASA and Boeing are finalizing weld parameters to assemble the structures for the new Exploration Upper Stage. Friction-stir welding of weld confidence articles is in work ahead of welding full-scale structures later this year.
“We start fabrication of our structural test article this June, this summer,” Steven Wofford, manager of NASA’s new Block 1B/Exploration Upper Stage Development Office, said in a February interview.
Based on current forecasts, the structural test article (STA) would be delivered to Marshall at the beginning of 2023, where it would be placed in Test Stand 4697. “The structural test article will be tested at Marshall, and we are scheduled to wrap up that testing in October of 2023,” Wofford added.
EUS will increase the overall payload performance of SLS from about 27 metric tons to 38 metric tons when inserting the Orion spacecraft on a trans-lunar trajectory. On Orion missions, Block 1B has enough performance to “co-manifest” a large secondary payload of approximately 10 metric tons.
In its Cargo configuration, Block 1B is expected to be able to insert payloads of greater than 40 metric tons on a trans-lunar trajectory.
Astro-notes a écrit:Avec en arrière plan il y a Orion, il y a de quoi blablater.
David L. a écrit:Un test au banc d'un moteur RS-25 est prévu à Stennis dans quelques minutes.
https://www.facebook.com/watch/live/?v=514793706409128
David L. a écrit:David L. a écrit:Un test au banc d'un moteur RS-25 est prévu à Stennis dans quelques minutes.
https://www.facebook.com/watch/live/?v=514793706409128
Mise à feu.