Segui Marine, Abel Federico R, Botez Ruxandra M, Ceruti Alessandro
Laboratory of Applied Research in Active Controls, Avionics and AeroServoElasticity (LARCASE), École de Technologie Supérieure, Montréal, QC H3C1K3, Canada.
Department of Industrial Engineering, University of Bologna, 40136 Bologna, Italy.
Biomimetics (Basel). 2021 Sep 24;6(4):54. doi: 10.3390/biomimetics6040054.
This study aims to evaluates how an adaptive winglet during flight can improve aircraft aerodynamic characteristics of the CRJ700. The aircraft geometry was slightly modified to integrate a one-rotation axis adaptive winglet. Aerodynamic characteristics of the new adaptive design were computed using a validated high-fidelity aerodynamic model developed with the open-source code OpenFoam. The aerodynamic model successively uses the two solvers and based on Reynold Averaged Navier Stokes equations. Characteristics of the adaptive winglet design were studied for 16 flight conditions, representative of climb and cruise usually considered by the CRJ700. The adaptive winglet can increase the lift-to-drag ratio by up to 6.10% and reduce the drag coefficient by up to 2.65%. This study also compared the aerodynamic polar and pitching moment coefficients variations of the Bombardier CRJ700 equipped with an adaptive versus a fixed winglet.
本研究旨在评估飞行过程中的自适应翼梢小翼如何改善CRJ700飞机的空气动力学特性。对飞机几何形状进行了轻微修改,以集成单旋转轴自适应翼梢小翼。使用通过开源代码OpenFoam开发的经过验证的高保真空气动力学模型,计算了新自适应设计的空气动力学特性。该空气动力学模型基于雷诺平均纳维-斯托克斯方程,相继使用了两种求解器。针对16种飞行条件研究了自适应翼梢小翼设计的特性,这些条件代表了CRJ700通常考虑的爬升和巡航状态。自适应翼梢小翼可将升阻比提高多达6.10%,并将阻力系数降低多达2.65%。本研究还比较了配备自适应翼梢小翼与固定翼梢小翼的庞巴迪CRJ700的气动极曲线和俯仰力矩系数变化。