Wind-tunnel tests on the NPL 434 nose-slot suction aerofoil

Show simple item record J. Williams en_US R. C. Pankhurst en_US Edna M. Love en_US 2014-10-21T15:53:21Z 2014-10-21T15:53:21Z 1952 en_US
dc.identifier.other ARC/R&M-2876 en_US
dc.description.abstract Stalling tests were made on the 8 per cent thick section NPL 434, which has been specially designed for nose-slot suction. At the higher suction quantities, the maximum lift of the aerofoil was considerably greater than for the Lighthill and Glauert sections previously tested when due allowance was made for the difference in camber. At low suction quantities, there was no improvement. Tests with various slot widths showed that the velocity into the slot as well as the suction quantity was important in relation to high maximum lift, and that the values of CLMAX achieved with suction were determined more nearly uniquely by the momentmn coefficient rather than by the quantity coefficient. Static pressure measurements made in the slot and ducting indicated that the suction head required at the stall was high, being at least equal to the dynamic head in the slot throat, but that some reduction could be expected from improvements in the slot entry shape. en_US
dc.relation.ispartofseries Aeronautical Research Council Reports & Memoranda en_US
dc.title Wind-tunnel tests on the NPL 434 nose-slot suction aerofoil en_US

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