PROPELLERS WITH DISTORTED INFLOW

Abstract: '~~~~~ýA421nvestigationi3oncc wtte steady-state reaction of a propeller to velocity perturbations induced by deflected control surfaces located upstream of the propeller0o The study was pursued alongboqthhe=ertical and experimental lines. QTheoretically ' actuator disk4 theory is used, first, to represent the control sur-faces and introduce a distortion Into the flow and, secondly, to represent the action of the propeller when exposed to the distorted floWv The problem Is reduced to a boundary value problem by linearizing the equations of motion and the continuity equation and then solved by proper choice of boundary and matching conditions at the actuator discs