They're not flying EM-1 before EM-2. EM-1 will still fly first. They're just moving some personnel around to help out with some issues that the EM-2 Flight Software has. This is perfectly normal. They did it all the time during the shuttle days.So weird that the Artemis I will succeed Artemis II!! It will probably kill the crew!!
AFAIK, the only part of the Shuttle-C that was reusable was the SRBs.I know the plan is for the SLS 1st stage to fire longer but didn't NASA look at an engine pod to detach from Shuttle C the with a heat shield and chute land in the ocean ?
I think it was just a H-1 engine.NASA also dunked an S1 B first stage into the gulf then fished it out and took it to Stenis and fired it off in a test stand several times
Jeez Is that a coloring book they are working on ???SLS Monthly Highlights : July 2019 (pdf)
LOX tank readied for testing
The fourth and final structural test article for the SLS core stage was unloaded from NASA’s barge Pegasus at Marshall Space Flight Center July 9. The nearly 70-foot-long liquid oxygen (LOX) tank structural test article, which was manufactured at NASA’s Michoud Assembly Facility in New Orleans, is structurally identical to the flight version and will be tested at Marshall. The LOX tank is one of two tanks in the rocket’s core stage that will supply propellant to the four RS-25 engines, which will produce more than 2 million pounds of thrust to help launch Artemis 1, the first flight of NASA’s Orion spacecraft and SLS, to the Moon. Marshall has tested major components of the core stage, upper stage and payload structures for SLS to confirm they will be able to withstand the forces and conditions they will ultimately face during launch and flight. To date, Marshall test engineers have completed testing on the entire upper part of the rocket, which includes the interim cryogenic propulsion stage that will give Orion the final boost to the Moon, and two of the four core stage pieces being tested: the engine section that connects to the four RS-25 engines and the intertank, the piece of the core stage that feels the most force during launch and solid rocket booster separation.
Green Run : test like you fly
Before the SLS rocket launches the Orion spacecraft during the Artemis 1 mission, the rocket’s core stage will be tested on Earth. NASA will test the rocket’s 212-foot tall core stage — the tallest rocket stage the agency has ever built — with a “Green Run” test to help ensure mission success and pave the way for future Artemis missions carrying crew to the Moon. Missions at the Moon will be a stepping stone to prepare for human exploration of Mars.During Green Run testing, engineers will install the core stage in the B-2 Test Stand at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, for a series of tests that will build like a crescendo over several months. The term “Green Run” refers to new flight hardware tested together for the first time. The stage will be fueled and pressurized, and the test series culminates with firing up all four RS-25 engines to demonstrate that the engines, tanks, fuel lines, valves, pressurization system and software can all perform together just as they will on launch day.
Artemis 1 : the launch sequence(YouTube)
Hear the countdown and see how NASA’s SLS, the world’s most powerful rocket, will send the Orion spacecraft to the Moon on the Artemis 1 Mission. This video takes you through the pre-launch sequence at NASA’s Kennedy Space Center in Florida and through all the flight operations as SLS launches Orion and sends it on to lunar orbit.
SLS on the road : Lehman College, Bronx, NY
Kids color their vision for the SLS rocket during the City of Science at Lehman College in the Bronx, New York, July 27. The event is part of the World Science Festival, which hosts science celebration events around the world.
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Interesting article from ARS TECHNICA about using modified Dragon spacecraft and SPACE X Falcon Heavy as boosters to fly to moonThrowing a few $100M of RS-25 engines designed and demonstrated to be reusable away just breaks my heart. The fact that they are working on cheaper and disposable versions of the RS-25 only to be used AFTER the current reusable stock is used up is just another stab to the heart. NASA can't envision reusable technology ever being relevant for a rocket?
NASA absolutely needs to get out of the rocket business as they simply can't innovate anymore in the political and fiscal environment it exists in. It's nothing but a pork farm now.
SPACEX has already done the studies about using Dragon on lunar missions. This includes heavier heat shield, radiation hardening of electronics,Maybe stretching the upper stage and using RL-10 instead of Merlin 1D Vaccum would send Dragon spacecraft to the Moon using expandable Falcon 9. However, I am concerned about its atmospheric reentry after the lunar flyby. It would go nearly as fast as the Apollo reentry capsule and would cause damages to the heat shield, defeating its purpose of reusability. Maybe using Starship heat shield would mitigate the problem.