패널법을 이용한 지면 및 장애물 효과가 단일 로터의 공력 및 후류 유동장 발달에 미치는 영향 분석

초록

Urban Air Mobility(UAM) has emerged as a promising solution to alleviate urban traffic congestion and is expected to operate frequently in complex environments with various obstacles, such as vertiports and buildings. In this study, the aerodynamic characteristics and wake behavior of an isolated rotor blade were investigated under ground and obstacle effect conditions. In-house vortex-based aerodynamic simulation code was validated using the Lynx tail rotor model under hovering conditions. The Large Rotor Rig experimental model developed by the University of Glasgow was utilized to simulate various rotor positions relative to the ground and obstacles. The results of parametric study showed that when the rotor was positioned closer to the ground, a reduction in induced velocity led to a thrust increase of up to 10% compared to out-of-ground-effect conditions. In contrast, when the rotor operated near obstacles, strong recirculating flow generated between the ground and the obstacle, resulting in thrust degradation.

키워드