Use of riblets to obtain drag reduction on airfoils at high reynolds number flows

An investigation was carried out to study the drag reduction capabilities of riblets (commercially available) when installed on a supercritical airfoil which was aerodynamically tested in the NAE's High Reynolds Number 2 D Test Facility. The flow conditions in this test ranged from M = 0.15 to M = 0.76, and Re/ft = 1.5 X 106 to Re/ft = 8 X 106 •...