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View Diary: UPDATED: Quietly, SpaceX makes a revolutionary launch (67 comments)

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  •  Less obvious benefit of "octaweb" (2+ / 0-)
    Recommended by:
    FarWestGirl, Keith Pickering

    By ramping the center engine up or down you can to some degree emulate a toroidal aerospike engine, that is, change your effective expansion ratio without physically altering your engines.  It also opens up the possibility, in future designs, of running fuel rich and injecting compressed atmospheric oxygen inside the outer ring, making a partial airbreather and allowing for crazy-high ISP.  

    Já þýðir já. Nei þýðir nei. Hvað er svona erfitt við það?

    by Rei on Mon Sep 30, 2013 at 06:04:05 AM PDT

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