NASA’s Space Launch System (SLS) uses four clustered liquid rocket engines along with two solid rocket boosters. The interaction between all six rocket exhaust plumes will produce a complex and severe thermal environment in the base of the vehicle. This work focuses on a recent 2% scale, hot-fire SLS base heating test. These base heating tests are short-duration tests executed with chamber pressures near the full-scale values with gaseous hydrogen/oxygen engines and RSRMV analogous solid propellant motors. The LENS II shock tunnel/Ludwieg tube tunnel was used at or near flight duplicated conditions up to Mach 5. Model development was based on the Space Shuttle base heating tests with several improvements including doubling of the maximum chamber pressures and duplication of freestream conditions. Test methodology and conditions are presented, and base heating results from 76 runs are reported in non-dimensional form. Regions of high heating are identified and comparisons of various configuration and conditions are highlighted. Base pressure and radiometer results are also reported.


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    Title :

    Space Launch System Base Heating Test: Experimental Operations & Results


    Contributors:
    A. Dufrene (author) / M. Mehta (author) / M. MacLean (author) / M. Seaford (author) / M. Holden (author)

    Publication date :

    2016


    Size :

    28 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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