Found a more recent NAC report, October 30, 2019. Green Run update on page 16.
Does anybody have a link to what the startup sequence for the four engines will be - circular, lug nut, opposing pairs?
Testing of the SLS core stage on the B-2 Test Stand at Stennis will involve a lot of fire and exhaust as four RS-25 engines are ignited simultaneously
Quote from: whitelancer64 on 11/12/2019 03:28 pmFound a more recent NAC report, October 30, 2019. Green Run update on page 16.That's a fantastic document, thank you for sharing it here.From the NAC document, will be good to track these milestones for the Green Run.− Core Stage Ship to SSC - December 2019 − Core Stage Load into B-2 Test Stand − Modal Test Complete − Vehicle Power-on Checks Complete − Main Propulsion System (MPS) & Engine Leak / Functional Checks Complete − Hydraulics and Thrust Vector Control (TVC) Checks Complete − Safing Checks for Wet Dress Rehearsal Complete − Simulation Countdown Complete − Wet Dress Rehearsal Complete − Hot-Fire Test Complete − Post Hot-Fire Refurbishment − Post Green Run Final Health and Status Check − Core Stage Ship to KSC
Quote from: Khadgars on 11/12/2019 05:00 pmQuote from: whitelancer64 on 11/12/2019 03:28 pmFound a more recent NAC report, October 30, 2019. Green Run update on page 16.That's a fantastic document, thank you for sharing it here.From the NAC document, will be good to track these milestones for the Green Run.− Core Stage Ship to SSC - December 2019 − Core Stage Load into B-2 Test Stand − Modal Test Complete − Vehicle Power-on Checks Complete − Main Propulsion System (MPS) & Engine Leak / Functional Checks Complete − Hydraulics and Thrust Vector Control (TVC) Checks Complete − Safing Checks for Wet Dress Rehearsal Complete − Simulation Countdown Complete − Wet Dress Rehearsal Complete − Hot-Fire Test Complete − Post Hot-Fire Refurbishment − Post Green Run Final Health and Status Check − Core Stage Ship to KSCStraight to KSC rather than back to Stennis for final checkout? That's the way NASA did many, if not most, Saturn stages. - Ed Kyle
Quote from: joncz on 11/13/2019 02:42 pmDoes anybody have a link to what the startup sequence for the four engines will be - circular, lug nut, opposing pairs?They are ignited simultaneously.
QuoteTesting of the SLS core stage on the B-2 Test Stand at Stennis will involve a lot of fire and exhaust as four RS-25 engines are ignited simultaneouslyhttps://www.nasa.gov/press-release/nasa-water-system-project-upgrades-critical-sls-support-system
Quote from: edkyle99 on 11/13/2019 03:49 pmStraight to KSC rather than back to Stennis for final checkout? That's the way NASA did many, if not most, Saturn stages. - Ed KyleDo you mean back to Michoud? It will already be at Stennis.
Straight to KSC rather than back to Stennis for final checkout? That's the way NASA did many, if not most, Saturn stages. - Ed Kyle
Quote from: whitelancer64 on 11/13/2019 03:20 pmQuote from: joncz on 11/13/2019 02:42 pmDoes anybody have a link to what the startup sequence for the four engines will be - circular, lug nut, opposing pairs?They are ignited simultaneously.Startup transients ought to be funQuote from: whitelancer64 on 11/13/2019 03:20 pmQuoteTesting of the SLS core stage on the B-2 Test Stand at Stennis will involve a lot of fire and exhaust as four RS-25 engines are ignited simultaneouslyhttps://www.nasa.gov/press-release/nasa-water-system-project-upgrades-critical-sls-support-systemNot sure I quite buy a press-release "simultaneous" as being the same as an engineering simultaneous.Thanks!
The @NASA_SLS rocket core stage for Artemis I has arrived @NASAStennis! The core stage will now be lifted and placed into the historic B-2 Test Stand for the core stage Green Run test.