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Science and Technology "Somewhere, something incredible is waiting to be known." - Carl Sagan.

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Old May 28 2015, 11:39 PM   #46
Rear Admiral
Re: Links to Science and Technology websites

SLS News:
New SSME class engines

Some comments from Nasaspaceflight

A higher head pressure implies that the boost pumps would need slightly less work to perform in order to get the output pressure to be the same, so there might be a very small, perhaps negligible, increase in performance. In any case, the engines are going to be operated at a higher thrust level compared to shuttle, at 109% (111% for new RS-25s) compared to 104% for the Space Shuttle.

« Last Edit: 01/23/2015 06:25 AM by Steven Pietrobon »

SLS also be experiencing greater G loading(3.3g) during ascent than STS(3 g) did, which in effect increases head pressure even more.


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