Author Topic: SLS Version of SRB-X with Orbital/ATK Dark Knights Advanced Boosters  (Read 12946 times)

Offline sdsds

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I'd like to volunteer this thread as a place to discuss just about any idea that involves putting "something" between to SLS SRBs. The idea floated just recently was to put a big can of ... nothing. That is, an empty core presumably with just enough structure to hold itself together during ascent. From the SRB cross-beam up it would support a more interesting second stage. (The suggestion was a SpaceX BFS, but it could be something sized quite differently from that.)

I attach an image just for grins. Just ignore those RS-25 engines at the base of the empty core....
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Offline Oli

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You would need maybe 8-9 dark knights to replace the ITS first stage.

With less thrust since acceleration would be too high (although 2 of them could be ignited in-flight).
« Last Edit: 12/19/2016 03:53 PM by Oli »

Online Robotbeat

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You would need maybe 8-9 dark knights to replace the ITS first stage.

With less thrust since acceleration would be too high (although 2 of them could be ignited in-flight).
If your goal is to just get BFS in orbit, you don't need that much. BFS is almost a SSTO already. Just have to get it up to a high enough altitude to light the vacuum Raptors. 12 GEM63XLs, like on Vulcan, should do it.
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Offline sdsds

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If your goal is to just get BFS in orbit, you don't need that much. BFS is almost a SSTO already. Just have to get it up to a high enough altitude to light the vacuum Raptors. 12 GEM63XLs, like on Vulcan, should do it.

The concern with this is the load paths. How would the thrust be introduced into the BFS structure? The value of the SLS-X "empty core" is that it loads the BFS from below just as the BFR will someday do.
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Offline Danderman

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What the heck, why not 2 SRBs and a Falcon 9 core, all non-reusable? Maybe one or so engines on the Falcon 9 operating at liftoff, the rest airstarted. Lengthen the heck out of the core.

Embrace the madness!

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