The significance of the influence of operating propellers on the aircraft aerodynamic characteristics is well-known. Wind tunnel testing of an airplane model with operating propellers is a complex task regarding the required similarity of the full-scale and the model case. Matching sufficient similarity in axial and rotational velocities in the propeller slipstream is the primordial c... https://www.jmannino.com/limited-deal-Vaal-E5000-Disposable-5000-puffs-12mL-flash-save/