Results 71 to 80 of about 1,896,429 (329)

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

Aerospace
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

Automatic Identification and Monitoring of Plant Diseases Using Unmanned Aerial Vehicles: A Review

Remote Sensing, 2021
Disease diagnosis is one of the major tasks for increasing food production in agriculture. Although precision agriculture (PA) takes less time and provides a more precise application of agricultural activities, the detection of disease using an Unmanned ...
Krishna Neupane, F. Baysal-Gurel
semanticscholar   +1 more source

Improving situation awareness of a single human operator interacting with multiple unmanned vehicles: first results [PDF]

, 2010
In the context of the supervision of one or several unmanned vehicles by a human operator, the design of an adapted user interface is a major challenge.
Aubert, Thomas, Causse, Mickaël, Corjon, Julien, Dehais, Frédéric, Gautreault, Fabien, Laurent, Mickaël   +5 more
core  

Routing Unmanned Vehicles in GPS-Denied Environments

, 2017
Most of the routing algorithms for unmanned vehicles, that arise in data gathering and monitoring applications in the literature, rely on the Global Positioning System (GPS) information for localization.
Misra, Sohum, Rathinam, Sivakumar, Sharma, Rajnikant, Sundar, Kaarthik   +3 more
core   +1 more source

Energy Consumption Optimization in Trajectory Planning for Fuel Cell Hybrid Uavs Based On HMPC

Advanced Robotics Research, EarlyView.
The endurance limitation of multirotor drones is a critical challenge. This study adopts a hybrid power system of fuel cells and lithium‐ion batteries. Using Nondominated Sorting Genetic Algorithm II, it integrates trajectory planning with energy management optimization.
Xindi Wang, Jianyang Dong, Yongming Yao, Kaijin Hu, Jianxiong Cui, Yikai Luo, Jiawen Zhang, Shichao Niu   +7 more
wiley   +1 more source

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

Drones
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, Yuqi Tong, Diyi Liu, Shipeng Yang, Fengjiang Zhan   +4 more
doaj   +1 more source

Research on the Quantitative Evaluation of the Traffic Environment Complexity for Unmanned Vehicles in Urban Roads

IEEE Access, 2021
The primary goal of the paper is to explore the human-vehicle-road interaction mechanism in the traffic environment and evaluate the traffic environment complexity for unmanned vehicles in urban roads.
Shijuan Yang, Li Gao, Yanan Zhao, Xurong Li   +3 more
semanticscholar   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

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

Scientific 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, Yi Zha, Chong Li, Zhiming Lu, Qijun Zhao   +4 more
doaj   +1 more source

Enhanced QoS Routing Protocol for an Unmanned Ground Vehicle, Based on the ACO Approach

Sensors, 2023
Improving models for managing the networks of firefighting unmanned ground vehicles in crowded areas, as a recommendation system (RS), represented a difficult challenge. This challenge comes from the peculiarities of these types of networks.
Ali M. Ali, Md Asri Ngadi, Rohana Sham, Israa Ibraheem Al_Barazanchi   +3 more
doaj   +1 more source