Optimal thrust efficiency for a tandem wing in forward flight using varied hindwing kinematics of a damselfly

YH Lai, SK Chang, B Lan, KL Hsu, JT Yang - Physics of Fluids, 2022 - pubs.aip.org
We reveal the hindwing kinematics of a damselfly that are optimal for the thrust efficiency,
which is a major concern of a bio-inspired micro-aerial vehicle. The parameters of the …

Turning-ascending flight of a Hipposideros pratti bat

A Rahman, P Windes, D Tafti - Royal Society Open …, 2022 - royalsocietypublishing.org
Bats exhibit a high degree of agility and provide an excellent model system for bioinspired
flight. The current study investigates an ascending right turn of a Hipposideros pratti bat and …

Role of wing inertia in maneuvering bat flights

A Rahman, D Tafti - Bioinspiration & Biomimetics, 2022 - iopscience.iop.org
The role of aerodynamics and wing inertia on the motion dynamics for the maneuvering
flight of two bats from two species of roundleaf bats, H. armiger and H. pratti are investigated …

Influence of trailing-edge shape on the propulsive performance of a plunging flat plate

SB Gonçalves, EA Camacho, AR Silva - AIAA AVIATION 2022 Forum, 2022 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2022-4042. vid Unsteady aerodynamics
is the study of flows that pass an object subjected to oscillations, which has a strong …

Flight maneuver of a damselfly with phase modulation of the wings

YH Lai, JF Ma, JT Yang - Integrative and Comparative Biology, 2021 - academic.oup.com
We developed a numerical model for four-wing self-propulsion to calculate effectively the
flight velocity generated with varied wing motions, which satisfactorily verified biological …

Numerical investigation on buffeting and lock-in phenomenon for biplane airfoils at α= 40∘

R Guo, Y Bai, Z Qiao, X Pei, G Wu - International Journal of Mechanical …, 2022 - Elsevier
Biplane airfoils at high angles of attack have interesting nonlinear characteristics, the
purpose of this work is to evaluate the impacts of spacing ratio (λ= ds/c= 0.25, 0.5, 1, 2 and 4 …

Effects of pivot point and spacing on the aerodynamic characteristics of tilting biplane airfoils

R Guo, X Pei, Y Bai - Fluid Dynamics Research, 2025 - iopscience.iop.org
The effects of pivot location (xp/c) and spacing ratio (λ= ds/c) on enhancing the lift generated
by rigid biplane NACA 0012 airfoils at Re= 1. 35× 105 are studied through the numerical …