Effect of Fillets on Wing-Fuselage Interference

Mutual interference of wing and fuselage has been the subject of many previous investigations, but these have been on a very small scale. A comprehensive investigation into the case of a low-wing monoplane was thought to have important possibilities, especially as this type of airplane was known to have some aerodynamical peculiarities. In a preceding investigation it had been found that the addition of large fillets to the intersection of wing and fuselage would cause a great improvement and it was decided to extend these tests and to include the case of a high-wing monoplane for comparison.