Results 71 to 80 of about 274,934 (259)

Unmanned Aerial Vehicle (UAV) for monitoring soil erosion in Morocco [PDF]

open access: yes, 2012
This article presents an environmental remote sensing application using a UAV that is specifically aimed at reducing the data gap between field scale and satellite scale in soil erosion monitoring in Morocco. A fixed-wing aircraft type Sirius I (MAVinci,
D'Oleire-Oltmanns, Sebastian   +3 more
core   +1 more source

Design of HAWT Rotor for Non‐Uniform Inflow Conditions: A Theoretical and Experimental Approach for Shear Flow

open access: yesEnergy Science &Engineering, EarlyView.
This paper aims to provide a robust design approach for HAWTs operating in shear flow. This study fills a critical research gap by integrating BEM and vortex theories for blade design in non‐homogeneous inflow conditions. The authors of the paper made an effort to develop and test an experimentally unsophisticated model of a turbine working in shear ...
Agnieszka Dorota Woźniak   +2 more
wiley   +1 more source

Effects of the use of robotized combat systems during the conflict in Ukraine from 24.02.2022 [PDF]

open access: yesBaština
This study analyses the use of robotic combat systems during the Russian Federation's invasion of Ukraine (special military operations of the armed forces of the Russian Federation) in two periods.
Terzić Miroslav R.
doaj   +1 more source

Contributions to Image Transmission in Icing Conditions on Unmanned Aerial Vehicles

open access: yesDrones, 2023
In terms of manned aircraft, pilots usually detect icing conditions by visual cues or by means of ice detector systems. If one of these cues is seen by the crew or systems detect icing conditions, they have to apply the evasive procedure as defined ...
José Enrique Rodríguez Marco   +4 more
doaj   +1 more source

Perception is Everything: Repairing the Image of American Drone Warfare [PDF]

open access: yes, 2018
This thesis will trace the United States’ development of unmanned warfare from its initial use in the World Wars through the Cold War to its final maturation in the War on Terror.
Tubbs, Luke
core   +1 more source

HyLPD Digital Twin Control for UAV Stability in High‐Wind Conditions

open access: yesOptimal Control Applications and Methods, EarlyView.
This work introduces a novel HyLPD, a hybrid control framework combining Linear Quadratic Regulator (LQR) for baseline stability and Deep Deterministic Policy Gradient (DDPG) for adaptive compensation, tailored for UAVs under high‐wind conditions.
Cara Rose   +2 more
wiley   +1 more source

Airborne Optical and Thermal Remote Sensing for Wildfire Detection and Monitoring

open access: yesSensors, 2016
For decades detection and monitoring of forest and other wildland fires has relied heavily on aircraft (and satellites). Technical advances and improved affordability of both sensors and sensor platforms promise to revolutionize the way aircraft detect ...
Robert S. Allison   +3 more
doaj   +1 more source

Control of unmanned aerial vehicles during fire situation monitoring [PDF]

open access: yesINCAS Bulletin, 2019
The issues of increasing the efficiency of fire situation monitoring are discussed, during which the search for objects of interest is being conducted to organize rescue operations and plan activities to fight the fire and reduce the consequences. Modern
Veniamin N. EVDOKIMENKOV   +3 more
doaj   +1 more source

Risk Times in Mission‐Oriented Systems

open access: yesQuality and Reliability Engineering International, EarlyView.
ABSTRACT This article assesses risk times in mission‐oriented systems with high safety standards. We examine critical times under two safety policies. The first requires that the system's reliability function, known the first failure of the components, must exceed a reliability level throughout the mission.
Antonio Arriaza   +2 more
wiley   +1 more source

OPERATIONAL AND TECHNOLOGICAL DIRECTIONS FOR UNMANNED AIRCRAFT SYSTEMS DEVELOPMENT

open access: yesSecurity and Defence Quarterly, 2018
Unmanned Aircraft Systems are continuously delivering new and enhanced battlefi eld capabilities to the military sphere. While the demand for unmanned systems remains at a relatively high level, it is expected that a number of operational and ...
Grzegorz Polak
doaj   +1 more source

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