Results 11 to 20 of about 80 (54)
The Hovering Stability of the Egretta Tail‐Sitter VTOL UAV
International Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022 Vertical takeoff and landing (VTOL) capability has extended the application of unmanned aerial vehicle (UAV) significantly. In this paper, simulation modeling and flight test were employed to investigate the hovering stability of a tail‐sitter UAV named Egretta.
Hao Wang +6 more
wiley +1 more source
A Computational Study on the Aeroacoustics of a Multi-Rotor Unmanned Aerial System
Applied Sciences, 2021 The noise generated by a quadrotor biplane unmanned aerial system (UAS) is studied computationally for various conditions in terms of the UAS pitch angle, propellers rotating velocity (RPM), and the UAS speed to understand the physics involved in its ...
Morteza Heydari +2 more
doaj +1 more source
Performance evaluation of RW‐Quadrotor and Bi‐Quadrotor for payload delivery
IET Intelligent Transport Systems, 2023 Payload delivery is one of the many Unmanned Aerial Vehicle (UAV) applications that save time, energy, and human resources. The present simulation study compares rotary‐wing quadrotors (RW‐Quadrotors) and tail‐sitter biplane quadrotors (Bi‐Quadrotors ...
Nihal Dalwadi +2 more
doaj +1 more source
Attitude Control of a Novel Tailsitter: Swiveling Biplane-Quadrotor
CoRR, 2019 This paper proposes a solution to the attitude tracking problem for a novel quadrotor tailsitter unmanned aerial vehicle called swiveling biplane quadrotor. The proposed vehicle design addresses the lack of yaw control authority in conventional biplane quadrotor tailsitters by proposing a new design wherein two wings with two attached propellers are ...
Nidhish Raj +3 more
openaire +2 more sources
IET Cyber-Systems and Robotics, Volume 1, Issue 1, Page 2-12, June 2019., 2019 Modern designs of micro air vehicles (MAVs) are mostly inspired by nature's flyers, such as hummingbirds and flying insects, which results in the birth of bio‐inspired MAVs. The history and recent progress of the aerodynamic mechanisms in bio‐inspired MAVs are reviewed in this study, especially focused on those compound layouts using bio‐inspired ...
Long Chen +3 more
wiley +1 more source
MATEC Web of Conferences, 2018 This paper presents the design of a symmetrical quad-rotor biplane tail-sitter VTOL UAV (Vertical Take-off and Landing Unmanned Aerial Vehicle) which is composed of four rotors and two symmetrically mounted fixed wings.
Wang Hongyu +5 more
doaj +1 more source
System identification of a hovering quadrotor biplane tailsitter with canted motors
The Aeronautical JournalAbstractA quadrotor was modified by adding wings to the frame to directly compare the flight dynamics characteristics as well as the stability and control derivatives of the quadrotor and its biplane tailsitter variant. The on-axis response of the quadrotor and a biplane tailsitter variant were measured through flight tests, and a frequency domain ...
O. Juhasz, J-P. Reddinger, J. Whitt
openaire +1 more source
Design, Dynamics and Development of Upgraded Tiltable Wing associated Quadcopter through Advanced computational simulations incorporated Bottom-Up Approach. [PDF]
Sci RepSaravana Mohan H +9 more
europepmc +1 more source
Numerical simulation of the transition flight aerodynamics of cross-shaped quad-tiltrotor UAV. [PDF]
Sci RepDu S, Zha Y.
europepmc +1 more source
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Optimal Trajectory Generation for a Quadrotor Biplane Tailsitter
Proceedings of the Vertical Flight Society 76th Annual Forum, 2020This paper introduces a methodology for an optimization-based trajectory planner for the autonomous transition of a quadrotor biplane tailsitter (QRBP) between the flight modes of hover to forward flight and forward flight to hover. The trajectory planner uses a simplified first principles dynamic model of the QRBP in the formulation of a ...
Jean-Paul Reddinger +3 more
exaly +2 more sources