Results 21 to 30 of about 886 (110)
Advances in Materials Science and Engineering, Volume 2016, Issue 1, 2016., 2016 This paper reports the results of the effect of sea water, natural ageing, and cross‐impact loading on flexural strength and residual flexural strength of epoxy laminates with glass woven fabrics and hybrid reinforcement with glass and carbon woven fabrics. The tests were conducted on samples with different fibre reinforcement both before and after low
Andrzej Komorek +3 more
wiley +1 more source
Energetic design of a new autogyro aircraft with cyclorotors with possibility of energy harvesting [PDF]
, 2017 Autogyros are important for their maneuverability and operative flexibility. This paper defines a new autogyro configuration based on cyclorotors placed on the side of the cabin, near the centre of gravity of the aircraft, and a pushing propeller with ...
Ejaz, Rija +3 more
core +1 more source
Reducing Magnetic Noise of an Unmanned Aerial Vehicle for High‐Quality Magnetic Surveys
International Journal of Geophysics, Volume 2016, Issue 1, 2016., 2016 The use of light and ultralight unmanned aerial vehicles (UAVs) for magnetic data acquisition can be efficient for resolving multiple geological and engineering tasks including geological mapping, ore deposits’ prospecting, and pipelines’ monitoring. The accuracy of the aeromagnetic data acquired using UAV depends mainly on deviation noise of electric ...
Boris Sterligov +2 more
wiley +1 more source
Asymptotic Vision-Based Tracking Control of the Quadrotor Aerial Vehicle [PDF]
, 2015 This paper proposes an image-based visual servo (IBVS) controller for the 3D translational motion of the quadrotor unmanned aerial vehicle (UAV). The main purpose of this paper is to provide asymptotic stability for vision-based tracking control of the
Asl, Hamed Jabbari, Do, Ton Duc
core +1 more source
Quasi‐ADS‐B Based UAV Conflict Detection and Resolution to Manned Aircraft
Journal of Electrical and Computer Engineering, Volume 2015, Issue 1, 2015., 2015 A Conflict Detection and Resolution (CD&R) system for manned/unmanned aerial vehicle (UAV) based on Automatic Dependent Surveillance‐Broadcast (ADS‐B) concept is designed and verified in this paper. The 900 MHz XBee‐Pro is selected as data transponder to broadcast flight information among participating aircraft in omnirange.
Chin E. Lin +2 more
wiley +1 more source
Obstacle avoidance based-visual navigation for micro aerial vehicles [PDF]
, 2017 This paper describes an obstacle avoidance system for low-cost Unmanned Aerial Vehicles (UAVs) using vision as the principal source of information through the monocular onboard camera.
Aguilar Castillo, Wilbert Geovanny +2 more
core +3 more sources
Spring and Power in Hovering Ornithopters
Advanced Intelligent Systems, Volume 7, Issue 7, July 2025.Only small ornithopters can hover, longest at the hummingbird size. This article reviews the drive and power of these hovering machines, focusing on elastic energy and thrust boosters. Unlike two‐winged designs, X‐winged and multiple‐V‐winged ornithopters benefit from lower disk loading and slower, smaller wingbeats, and the clap‐and‐fling effect ...
Gih‐Keong Lau +4 more
wiley +1 more source
People and Nature, Volume 7, Issue 6, Page 1309-1320, June 2025.Abstract There has been increasing recognition of the adverse effects of outdoor recreation on the behavioural ecology, breeding success and ultimate abandonment of territories in several raptor species, such as the Bonelli's Eagle (Aquila fasciata). We assessed the effects of human activities on the behaviour and breeding success of Bonelli's eagles ...
José E. Martínez +5 more
wiley +1 more source
An operational solution to acquire multispectral images with standard light cameras : Characterization and acquisition guidelines [PDF]
, 2007 In order to develop a low-cost and easy to implement technical solution to map inside-field spatial variability, and to explore its relationship with crop conditions, several experiments were conducted using ultra-light aircraft and Unmanned Aerial ...
Bégué, Agnès +4 more
core
Can Multiscale Thermal Infrared Imaging Help Validate and Monitor Water Stress in Alluvial Forests?
Ecohydrology, Volume 18, Issue 2, March 2025.ABSTRACT Alluvial forests are sensitive to drought induced by climate change and exacerbated by altered flow regimes. Our ability to detect and map their sensitivity to drought is crucial to evaluate the effects of climate change and adjust management practices.
Julien Godfroy +8 more
wiley +1 more source