VICTOR MALDONADO; DIOSER SANTOS

DOI Number: 10.13009/EUCASS2023-010

Bio-inspired microfibers are applied to the suction wing surface of a small flying wing UA Vand their effect on aerodynamics and control surface performance is analyzed via wind tunnelexperim ents. The effects of fiber height, coverage area, flow regime and angle of attack are studied in the use of microfibers as a passive flow control method. Taller microfibers, when compared to a smooth wing, provide a drag reduction ofup to 24. 7% for Cr = 0.9 at higher Reynolds number, whereas shorter fibers perform better at lower Reynolds, with a 24. 2% drag reduction for the same lift coefficient. Control surface testing shows that when applying microfibers to the elevon and its upstream wing region, there is an improvement in pitch moment authority at higher angles of attack, with an increase in the pitch coefficient magnitude of up to 22. 4%. Microfiber coating films, while being incredibly practical for use, have the potential to improve the performance of small flying vehicles in certain conditions.

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In Categories: 1. Aerodynamics and Flight Physics, 1. Aerospace Europe Conference 2023, 1.Events
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