Advances in wind tunnel experimental investigations of train–bridge systems

X He, S Zou - Tunnelling and Underground Space Technology, 2021 - Elsevier
Wind tunnel tests have been widely applied in aerodynamic investigations owing to their
unique advantages. However, it is difficult to theoretically establish a simplified symmetry or …

Review on wind resistance for quadrotor UAVs: Modeling and controller design

J Shen, B Wang, BM Chen, R Bu, B Jin - Unmanned Systems, 2023 - World Scientific
Micro-Unmanned Air Vehicles (Micro-UAVs), especially quadrotor UAVs, have been widely
used in recent years because of their simple structure and convenient operation. However …

[HTML][HTML] Experimental investigation on turbulence effects on unsteady aerodynamics performances of two horizontally placed small-size UAV rotors

NL Oo, D Zhao, M Sellier, X Liu - Aerospace Science and Technology, 2023 - Elsevier
Wind turbulent disturbance is one of the critical challenges to flying unmanned aerial
vehicles (UAVs); especially when the size, weight, and power on board such aircraft are …

Real-time prediction framework for frequency-modulated multirotor noise

J Ko, J Jeong, H Cho, S Lee - Physics of Fluids, 2022 - pubs.aip.org
A comprehensive multirotor noise assessment framework is developed to predict the noise
of rotational-speed-controlled rotor configurations in real-time. The key objectives are to …

Quantification of wake interaction effects on multi-rotor configurations in forward flight

J Ko, S Lee - Aerospace Science and Technology, 2023 - Elsevier
This study aims to illustrate the correlations of performance and wake dynamics in multi-rotor
configurations and explain the induced circulation (IC), the quantification factor for wake …

Aerodynamic interactions of quadrotor configurations

D Barcelos, A Kolaei, G Bramesfeld - Journal of Aircraft, 2020 - arc.aiaa.org
An advanced potential flow method is used to study the aerodynamic interactions between
small rotors of quadrotor configurations and the impact on the overall flight performance. The …

Quad-rotor flight simulation in realistic atmospheric conditions

B Davoudi, E Taheri, K Duraisamy, B Jayaraman… - AIAA Journal, 2020 - arc.aiaa.org
In trajectory planning and control design for unmanned air vehicles, highly simplified models
are typically used to represent the vehicle dynamics and the operating environment. The …

Preliminary design of multirotor UAVs with tilted-rotors for improved disturbance rejection capability

ZJ Chen, KA Stol, PJ Richards - Aerospace Science and Technology, 2019 - Elsevier
The ability of multirotor UAVs to hold position accurately in a turbulent wind environment is
important for a variety of commercial applications. In this work, a tilted-rotor configuration …

[PDF][PDF] Impact of Rotor–Rotor and Rotor–Body Aerodynamic Interactions on Quadrotor Vehicle Performance

S Herz, A Atte, D Seth, J Rauleder… - VFS 79th Annual …, 2023 - researchgate.net
Rotor–rotor and rotor–body interactions can have a first-order impact on multirotor vehicle
performance throughout the flight envelope. Identification of these performance impacts has …

[PDF][PDF] Flight Test Measurement of Quadrotor Performance at Varying Sideslip Angles

M McCrink, D Seth, S Herz - … 78th Annual Forum, Fort Worth, TX, 2022 - researchgate.net
This research investigated the effects of the aerodynamic interaction of the rotor-rotor and
the rotor-body as the vehicle transitions between the plus (+) and cross configurations (×) …