TY - JOUR T1 - Loss reduction on ultra high lift low-pressure turbine blades using selective roughness and wake unsteadiness JO - AERONAUT J PY - 2007/04/01 AU - Howell RJ AU - Roman KM ED - VL - 111 IS - 1118 SP - 257 EP - 266 Y2 - 2024/12/25 ER -