Raju, Channa and Viswanath, PR (1997) Base drag reduction due to riblets on a gaw (2) airfoil. Technical Report. National Aerospace Laboratories, Bangalore, India.
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Abstract
Results from an experimental study to determine the effect of riblets on the base drag of a GAW(2) airfoil at low speeds are presented. Riblet films (3M Co.,USA) of groove height 0.076 mm and 0.152 mm were employed in the study. Measurements made consisted of surface pressure distributions, base pressure and total drag using the wake survey method in the incidence range of -2 to 6 deg. Results show that riblets provide base drag reduction of about 0.7 % of the total drag, in addition to significant viscous drag reduction.
| Item Type: | Proj.Doc/Technical Report (Technical Report) |
|---|---|
| Uncontrolled Keywords: | Base drag;Riblets;Drag reduction |
| Subjects: | AERONAUTICS > Aircraft Design, Testing & Performance |
| Division/Department: | Experimental Aerodynamics Division, Experimental Aerodynamics Division |
| Depositing User: | Mr. N A |
| Date Deposited: | 07 Jun 2006 |
| Last Modified: | 24 May 2010 09:41 |
| URI: | http://nal-ir.nal.res.in/id/eprint/1403 |
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