Turbulent drag reduction using riblets on a supercritical airfoil at transonic speeds
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
View Archive Info| Field | Value | |
| Title |
Turbulent drag reduction using riblets on a supercritical airfoil at transonic speeds
|
|
| Creator |
Viswanath, PR
Mukund, R |
|
| Subject |
Aircraft Stability and Control
|
|
| Description |
Numerous studies have shown that viscous drag reduction of 4-8% at low speeds can be achieved in simple two-dimensional flows at wind-tunnel Reynolds numbers. Because of the encouraging benefits realized at low speeds, an evaluation of riblet effectiveness at subsonic and transonic speeds, both in wind tunnels and flight, has been reported. Realistic applications involve, among other factors, pressure gradient (eg, airfoil and wing) and three-dimensionality. Drag reductions under these conditions are being assessed currently. This paper presents recent results of drag reduction using 3M riblets on a supercritical airfoil at transonic speeds covering an angle of attack range of -0.5 to 1 deg, which is relevant to cruise conditions. (Authors)
|
|
| Date |
1995
|
|
| Type |
Journal Article
PeerReviewed |
|
| Identifier |
Viswanath, PR and Mukund, R (1995) Turbulent drag reduction using riblets on a supercritical airfoil at transonic speeds. AIAA Journal, 33 (5). pp. 945-947.
|
|
| Relation |
http://nal-ir.nal.res.in/320/
|
|