The practical aspects of drag reduction using LEBU (large-eddy break-up) devices, turbulence manipulators, etc. in flight are discussed with the help of experience from previous flight tests. These tests have shown that appreciable reductions in local skin friction exist under flight conditions, and that the turbulence-manipulating effects can be found for swept tandem devices in transonic as well as supersonic flows. The unsteady loads experienced with the devices are discussed in connection with the frequencies occurring in this type of real flight conditions.
Use of LEBU-devices for drag reduction at flight conditions
Turbulent drag reduction by passive means
1987-01-01
Conference paper
No indication
English
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NTRS | 1988
|Riblet drag reduction at flight conditions
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