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Aerodynamic characteristics of two flat-bottomed bodies at Mach number of 3.12The aerodynamic characteristics of two flat-bottomed bodies having a semicircular and a semielliptical cross section have been determined at a Mach number of 3.12 for a range of angles of attack from -10 degrees to 10 degrees and for Reynolds numbers of 8 x 10 (superscript)6 and 14 x 10 (superscript)6 (based on model length). A comparison of the flat-bottomed body characteristics with those previously determined for an equivalent cone-cylinder body of revolution shows that significant increases in lift and lift-drag ratio are obtained with a flat bottom. Additional improvement in lift and lift-drag ratio was achieved at positive angles of attack by expanding the plan form in the spanwise direction.
Document ID
19930088112
Acquisition Source
Legacy CDMS
Document Type
Other - NACA Research Memorandum
Authors
Jack, John R
Moskowitz, Barry
Date Acquired
August 16, 2013
Publication Date
April 2, 1954
Report/Patent Number
NACA-RM-E53L11b
Accession Number
93R17402
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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