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NACA-TR-1274: Second-order subsonic airfoil theory including edge effects
Abstract: Several recent advances in plane subsonic flow theory are combined into a unified second-order theory for airfoil sections of arbitrary shape. The solution is reached in three steps: the incompressible result is found by ...
NASA-TR-3082: Rotary-wing aerodynamics - Volume 1: Basic theories of rotor aerodynamics with application to helicopters
Abstract: The concept of rotary-wing aircraft in general is defined. The energy effectiveness of helicopters is compared with that of other static thrust generators in hover, as well as with various air and ground vehicles in forward ...