NODRAG

Novel Drag Reduction Active Device for Next Generation Vehicles

Over 50% of the fuel consumed by a modern aircraft is attributable to the friction generated by the interaction between high-speed turbulent flow and the surface of the aircraft. Recent studies have shown that oscillations of the surface perpendicular to the flow direction, with well-defined frequencies and speeds, can reduce drag resistance by up to 30%. However, due to mechanical complexity, the practical implementation of this strategy is extremely challenging.

The project proposes the development and validation of an innovative active flow control device, based on an original configuration of plasma actuators (Plasma Actuators, PA), capable of generating flow modulation similar to that produced by oscillating walls, but without moving parts. The prototype will be tested within the Long Pipe of the CICLoPE laboratory, a unique experimental structure capable of reproducing turbulent flows at high Reynolds numbers, comparable to those encountered by full-scale vehicles, while allowing for detailed measurements near the wall.

The project objectives include: designing and producing a prototype optimized for industrially relevant flow conditions; characterizing the flow field induced by the matrix of PA; and evaluating the efficiency of the device in scenarios representative of transport vehicles, with particular focus on the aerospace sector. In addition to the physical realization of the prototype, the project will provide quantitative data on energy requirements, flow characteristics, and potential reductions in aerodynamic drag. Such information will be crucial for designing future full-scale prototypes and accurately estimating the energy benefits derived from the adoption of the proposed technology.