Results 71 to 80 of about 17,599,944 (194)

Unmanned Aerial Systems for Corrosion Detection: Multi‐Sensor Technologies, Challenges, and Opportunities for Next‐Generation Inspection

Quality and Reliability Engineering International, Volume 42, Issue 6, Page 3565-3583, October 2026.
ABSTRACT Corrosion remains a critical threat to the integrity and service life of infrastructure in industries such as oil, gas, construction, renewable energy, and transportation. Traditional inspection methods, being labor‐intensive, hazardous, and often subjective, fall short in addressing modern inspection demands.
Alhossein Alharbi, Yunes Alqudsi, Alhasan Ali Alharbi, Mohammed Basheer Mohiuddin   +3 more
wiley   +1 more source

Estimating Drone Visual Line-of-Sight Distance Using Machine Learning Approaches

Aerospace
In this study, we conducted flight tests to establish a clear standard for the visual line-of-sight (VLOS) distance of drones using machine learning models, as outlined in the Aviation Safety Act. Various machine learning models were applied and compared
Gyoubeom Kim, Inje Cho, Junghoi Jin, Keecheon Kim, Shinui Kim, Heejeong Choi   +5 more
doaj   +1 more source

Wildland Fire Emission Sampling at Fishlake National Forest, Utah Using an Unmanned Aircraft System. [PDF]

Atmos Environ (1994), 2021
Aurell J, Gullett B, Holder A, Kiros F, Mitchell W, Watts A, Ottmar R.   +6 more
europepmc   +1 more source

Requirements, issues, and challenges for sense and avoid in Unmanned Aircraft Systems

, 2012
The sense and avoid capability is one of the greatest challenges that has to be addressed to safely integrate unmanned aircraft systems into civil and nonsegregated airspace. This paper gives a review of existing regulations, recommended practices, and
Pastor, E., Delgado, L., Prats Menéndez, Xavier, Prats, X., Delgado Muñoz, Luis, Royo Chic, Pablo, Ramírez, J., Royo, P., Pastor Llorens, Enric, Ramírez Alcántara, Jorge   +9 more
core   +1 more source

Influence of Thermal Cycling on Friction, Wear, and Damage Evolution of Fused Deposition Modeling of 3D‐Printed Glass Fiber Reinforced Polylactic Acid Composites

Polymer Composites, Volume 47, Issue 18, Page 16212-16232, 20 September 2026.
Schematic illustration of the experimental procedure of the specimens. ABSTRACT This research work investigated the effect of the cyclic thermo‐hygrometric aging regime between −20°C and +40°C with 0–400 cycles on the reciprocating tribological properties of fused deposition modeling (FDM) printed polylactic acid (PLA) and the same material reinforced ...
Sinan Fidan, Satılmış Ürgün, Nevin Gamze Karsli, Taner Yılmaz, Mustafa Özgür Bora, Mehmet İskender Özsoy   +5 more
wiley   +1 more source

Use of an unmanned aircraft system to quantify NO _<i>x</i> emissions from a natural gas boiler. [PDF]

Atmos Meas Tech, 2021
Gullett B, Aurell J, Mitchell W, Richardson J.   +3 more
europepmc   +1 more source

Detecting and Assessing Collision Potential of Aircraft and Small Unmanned Aircraft Systems (sUAS) by Visual Observers

International Journal of Aviation, Aeronautics, and Aerospace, 2017
Visual observers are used to assist the Remote Pilot with maintaining sight of the unmanned aircraft as well as scanning the surrounding airspace for potential collision hazards.
Samuel M Vance, Ryan J Wallace, Jon M. Loffi, Jamey D. Jacob, Jared C. Dunlap, Taylor A Mitchell   +5 more
doaj   +1 more source

Integration of UAS in the civil airworthiness regulatory system: present and future [PDF]

, 2010
The last years are witnessing a number of initiatives worldwide devoted to assess the safety levels of the unmanned aircraft. These initiatives are very heterogeneous; some of them are centred in airworthiness aspects while others focus on operations ...
Garcia Julia, Eduardo, Cuerno Rejado, Cristina, Martinez-Val Peñalosa, Rodrigo   +2 more
core  

Assessing use of and reaction to unmanned aerial systems in gray and harbor seals during breeding and molt in the UK [PDF]

, 2015
This work was supported by UK NERC National Environmental Research Council National Capability funding to SMRU, NERC grant No. GE08-001358 to PP, through UK DEFRA support to SMRU, and by development grants from MASTS and Chester Zoo.Wildlife biology ...
Pomeroy, Patrick, O’Connor, L., Davies, P.   +2 more
core   +1 more source

Gradient-Based Internal–External Flow Coupling Optimization for Embedded-Inlet Aircraft

Aerospace
As aerodynamic configurations become increasingly integrated with propulsion systems, internal–external flow coupling has become a key issue in airframe–engine integration. For embedded-inlet configurations, however, the airframe and inlet/exhaust system
Yuning Liu, Libo Wang, Tihao Yang, Yiwen Wang, Yayun Shi   +4 more
doaj   +1 more source