Mechanical Engineering Spring 2018 Seminar Series
Aerodynamics of high dynamic rate maneuvers at Micro Air Vehicle (MAV) scale
Dr. John Hrynuk
Research Mechanical Engineer
US Army Research Lab at Aberdeen Proving Ground, Maryland
ABSTRACT. The use of Micro-Air Vehicles (MAVs) is rapidly growing in both military and civilian settings. However, these MAVs are limited in their flight endurance, efficiency, and dynamic maneuverability. Current quad-rotor technology is easily controlled but inherently inefficient. Bio-inspired and other future MAV concepts are currently limited by present understanding of the underlying fluid mechanics involved. This talk will look at two separate problems facing future MAVs: high dynamic rate pitching similar to a perching or landing maneuver (dynamic stall), and MAV-gust interaction. Dynamic stall at low Reynolds number (Re = 12,000) will be discussed and the effects of surface roughness will be preliminarily evaluated. The development of ARL’s wind tunnel gust generator system and the interaction of a wing with that gust will also be presented.
BIO. Dr. John Hrynuk is a Research Mechanical Engineer at the US Army Research Lab at Aberdeen Proving Ground, Maryland. He operates and conducts experiments in the Microsystem Aeromechanics Wind Tunnel (MAWT), a low speed tunnel designed for testing MAV scale fluid mechanics problems. He received his bachelors, Masters, and PhD from Clarkson University in NY.