Hoerner?
Jim,do you have a copy of 'Aerodynamic Drag',by S.Hoerner?
He's got a whole section on auxiliary fuel tanks,blisters,landing gear,etc..It might be useful.I can't say that any of the Cds would be the same,'cause Abbott and von Doenhoff say they won't be,but it's a voluminous text,chock full of everything aero.
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