Ramaswamy, MA and Sharma, Ramachandra and Krishnamuthy, K (1974) Two dimentional transonic blockage interference studies in the NAL 1-Ft. blowdown wind tunnel. Technical Report. National Aeronautical Laboratory, Bangalore, India.
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Abstract
Two 12% thick circular-arc aerof oils of 3 in. and 6 in. chord length were tested at zero angle of attack to determine the slot open-area ratio for minimum two-dimensional blockage interference at transonic speeds in the HAL 1-ft. blowdown wind turmel. By blocking the slots in alternative arrangements,slot open-area ratio of 8%, 4% and 1.33% were obtained. Of these, the 8% open area was found to give the least zero-lift blockage interference.
| Item Type: | Proj.Doc/Technical Report (Technical Report) |
|---|---|
| Uncontrolled Keywords: | Aerofoils;Slot open area ratio |
| Subjects: | AERONAUTICS > Aerodynamics |
| Division/Department: | Aerodynamics, Aerodynamics, Aerodynamics |
| Depositing User: | M/S ICAST NAL |
| Date Deposited: | 28 Aug 2006 |
| Last Modified: | 24 May 2010 09:49 |
| URI: | http://nal-ir.nal.res.in/id/eprint/2579 |
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