An experimental investigation in flight was performed to explore the feasibility of using LEBU (Large-Eddy-Breakup) devices to reduce the drag of aircraft. Two geometrical shapes of ribbons were used, and the development of local skin friction was monitored downstream. The aircraft was a swept-wing attack aircraft, and the flights covered the entire subsonic regime from M=0.92 down to stall conditions; flight altitudes were 1, 4.5, 7 and 10 km to explore various combinations of angle of attack, Mach - and Reynolds numbers. Some information was obtained concerning the turbulence characteristics downstream, and a discussion of the downstream amplification due to the drag at the device is also presented.
Full scale experiments into the use of large eddy breakup devices for drag reduction on aircraft
1984-08-01
Conference paper
No indication
English
Large Eddy Breakup Devices as Low Reynolds Number Airfoils
SAE Technical Papers | 1986
|Large-Eddy Simulations of the Vortex-Pair Breakup in Aircraft Wakes
Online Contents | 1996
|