Tag: EUS
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NASA moves to enforce early switch to EUS for SLS
NASA managers have placed a “stop work order” in relation to the human-rating of the Interim Cryogenic Propulsion Stage (lCPS) for the Space Launch System (SLS). The stage, which was set to ride with a crewed flight on Exploration Mission -2 (EM-2), will be replaced by the early addition of the more powerful Exploration Upper…
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NASA told to resolve SLS Upper Stage dilemma
NASA officials have admitted the interim Upper Stage for the Space Launch System is at the top of their “worry list”, as the Agency’s key advisory group insists NASA should make a decision about bringing the more powerful Exploration Upper Stage (EUS) online sooner. The Aerospace Safety Advisory Panel (ASAP) fears NASA is at risk…
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NASA lines up Exploration Upper Stage workhorse for SLS
The powerful Exploration Upper Stage (EUS) has taken another step forward, following NASA’s request to industry to provide evaluations and costings into engine options. Four engines are expected to power the large Upper Stage of the Space Launch System (SLS) – a stage that is expected to become the workhorse of NASA’s deep space human…
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SLS searching for missions to solve flight rate dilemma
Space Launch System (SLS) managers are continuing to look at potential – and as yet unfunded – science missions to provide their monster rocket with a viable number of flights. The flight rate dilemma was recently highlighted when it was admitted NASA had looked into “how slow” a launch rate could be viable for the…
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NASA confirms EUS for SLS Block IB design and EM-2 flight
Following internal conversations regarding the upper stage design for the forthcoming second flight of the Space Launch System (SLS) – named Exploration Mission -2 (EM-2) – NASA has confirmed a move to change not just the upper stage of SLS for EM-2, but also to change the iteration of SLS that will fly the mission.…
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Evolving plans: No human rating for ICPS for SLS EM-1 mission
With SLS on track to make its debut launch in December 2017 from Launch Complex 39B at the Kennedy Space Center, NASA continues its efforts to refine the vehicle’s test flight necessities ahead of EM-1 – particularly, the removal of the requirement to human rate the rocket’s Interim Cryogenic Propulsion Stage. SLS Block 1 and…