 transit reynold number separ flow superson speed transit reynold number separ flow superson speed experiment conduct effect wall cool mach number unit reynold number transit reynold number cylindr separ boundari layer ogiv-cylind model pressur temperatur measur shadowgraph observ maximum scope measur encompass mach number 2 06 4 24 reynold number base length separ 60 000 400 000 ratio wall temperatur adiabat wall temperatur 0 35 1 0 rang test transit reynold number observ decreas increas wall cool increas increas mach number increas increas unit reynold number wall-cool time great attach boundari layer upstream separ cool conjunct cool separ boundari layer separ boundari layer cool wall cool attach separ flow region caus case reattach separ region caviti reson separ region model configur accompani larg decreas transit reynold number lower test mach number 