Results 21 to 30 of about 43,453 (201)

Adaptive finite-time fault-tolerant control scheme of UAV against combined faults

open access: yesScientific Reports
The control of unmanned aerial vehicles (UAVs) has been an active area of research over the past decade, particularly for operations in complex environments.
Xiangfeng Yan, Tao Li, Yuan Tian
doaj   +1 more source

Robust path planning for avoiding obstacles using time-environment dynamic map

open access: yesMeasurement + Control, 2020
Small unmanned aerial vehicles are widely used in urban space because of its flexibility and maneuverability. However, there are full of dynamic obstacles and immobile obstacles which will affect safe flying in urban space.
Xiaolin Zhao, Yu Zhang, Boxin Zhao
doaj   +1 more source

Aerodynamic Optimization Design of Duct Body Structure for Coaxial Rotor Unmanned Aerial Vehicles

open access: yesInternational Journal of Aerospace Engineering
With the rapid development of vertical takeoff and landing aircraft, urban air traffic has gradually attracted people’s attention. The lift system is a key technology in the composition of vertical takeoff and landing aircraft systems. Due to its compact
Du Siliang, Zha Yi, Zhao Qijun
doaj   +1 more source

Research on Aerodynamic Test Validation and the Vector Force Control Method for an E-STOL Fan Wing Unmanned Aerial Vehicle

open access: yesAerospace
The concept of the Fan Wing, a novel aircraft vector-force-integrated device that combines a power unit with a fixed wing to generate distributed lift and thrust by creating a low-pressure vortex on the wing’s surface, was studied.
Siliang Du, Yi Zha, Qijun Zhao
doaj   +1 more source

Detection of unmanned aerial vehicle trajectory using overlapping images

open access: yesRUDN Journal of Engineering Research, 2023
Currently, unmanned aerial vehicles are widely used with navigation based on data from onboard integrated systems including inertial and satellite sensors.
Vladimir G. Andronov   +2 more
doaj   +1 more source

Preliminary Design and Optimization Approach of Electric FW-VTOL UAV Based on Cell Discharge Characteristics

open access: yesDrones
The electric vertical take-off and landing fixed-wing (FW-VTOL) unmanned aerial vehicle (UAV) combines the advantages of fixed-wing aircraft and multi-rotor aircraft.
Cheng He   +4 more
doaj   +1 more source

Underground unmanned aerial vehicles cluster system for monitoring and its key technologies

open access: yesGong-kuang zidonghua, 2019
Underground monitoring and control system is usually fixed and has limited range, so it is difficult to fully meet dynamic monitoring requirements of underground safety production.
YANG Wei, SHAN Chunyan, LIU Junbo
doaj   +1 more source

Research on the aerodynamic characteristics of eVTOL aircraft ducted rotor tip embedded inside the ducted body

open access: yesScientific Reports
The lift system constitutes a pivotal technology in the makeup of vertical takeoff and landing aircraft systems. The application of ducted rotors in urban air mobility(UAM) has advantages and is one of the future development trends.
Siliang Du   +4 more
doaj   +1 more source

Potential field method for persistent surveillance of multiple unmanned aerial vehicle sensors

open access: yesInternational Journal of Distributed Sensor Networks, 2018
Persistent surveillance is one of the major tasks envisioned for unmanned aerial vehicles in that some regions of interest need to be continuously surveyed.
Changxin Huang   +4 more
doaj   +1 more source

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