Hypersonic International Flight Research Experimentation (HIFiRE)-5 is a hypersonic flight-test experiment designed to investigate the aerothermodynamics of a three-dimensional geometry. The vehicle is a 7 deg minor-axis half-angle elliptic cone with a 2 1 aspect ratio and 2.5 mm nose radius. The HIFiRE-5b achieved a Mach number of 7.7–7.9 and a freestream unit Reynolds number of 5 10 6 50 10 6 / m during descent. Heat flux was calculated from thermocouple pairs, and boundary-layer transition locations were identified from these heating rates. A multilobed transition front was observed, with earliest transition at the centerline, on the leading edges, and part way in between. It is suspected that a different mechanism is responsible for each of these lobes. Transition along HIFiRE-5b’s leading edges occurred at roughly constant length-based Reynolds numbers, suggesting a different mechanism than the roughness-induced transition suspected for HIFIRE-5a. Transition near the planes of symmetry was found to be less sensitive to attitude variation than elsewhere on the vehicle surface. In particular, hot streaks suspected to be due to stationary crossflow vortices were very sensitive to small changes in attitude (roughly ± 1    deg angle of attack and yaw). Data from 128 pairs of thermocouples show the overall temperature, heat flux, and boundary-layer state during flight.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    HIFIRE-5b Heat Flux and Boundary-Layer Transition



    Published in:

    Publication date :

    2018-11-19


    Size :

    14 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    HIFiRE-5b Heat Flux and Boundary-Layer Transition

    Juliano, Thomas J. / Poggie, Jonathan / Porter, Kevin et al. | AIAA | 2017


    HIFiRE-1 Ascent-Phase Boundary-Layer Transition

    Kimmel, Roger L | Online Contents | 2015


    HYPERSONIC TRANSITION: HIFIRE AND BOLT HIGH-FIDELITY SIMULATION OF HIFIRE-5 BOUNDARY-LAYER TRANSITION

    Tufts, Matthew W. / Borg, Matthew P. / Bisek, Nicholas J. et al. | TIBKAT | 2020


    HIFiRE-1 Ascent-Phase Boundary-Layer Transition

    Kimmel, Roger L. / Adamczak, David / Paull, Allan et al. | AIAA | 2014


    HIFiRE-1 Boundary Layer Transition Experiment Design

    Kimmel, Roger / Adamczak, Daved / Gaitonde, Datta et al. | AIAA | 2007