Results 31 to 40 of about 527 (68)

The Experimental Verification of Direct-Write Silver Conductive Grid and ARIMA Time Series Analysis for Crack Propagation

Sensors, 2021
The paper presents experimental verification of customized resistive crack propagation sensors as an alternative method for other common structural health monitoring (SHM) techniques.
Artur Kurnyta, Marta Baran, Paulina Kurnyta-Mazurek, Kamil Kowalczyk, Michał Dziendzikowski, Krzysztof Dragan   +5 more
doaj   +1 more source

The Future of Hydrogen‐Powered Aviation: Technologies, Challenges, and a Strategic Roadmap for Sustainable Decarbonization

Advanced Energy and Sustainability Research, EarlyView.
Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira, Md Mahbubur Rahman, Karib Hassan Khan, Md Nizam Uddin, Dewan Hafiz Nabil   +4 more
wiley   +1 more source

Is That a Threat? How Types of Stakeholder and Reputational Threat Matter for Gaining Influence in Regulatory Rulemaking

Regulation &Governance, EarlyView.
ABSTRACT This paper assesses what type of comments are most useful to what type of stakeholder in gaining influence during public consultations. Theoretically, the paper approaches stakeholders' consultation comments as reputational threats from key audiences that the agency needs to respond to.
Rik Joosen
wiley   +1 more source

Law and Infrastructure: Reliability, Automation Transition, and Irregularities of “U‐Space”

Regulation &Governance, EarlyView.
ABSTRACT The European Union (EU) is making regulatory efforts to allow for the safe integration of drones into civilian airspace through automated means. Commission Implementing Regulation (EU) 2021/664 concerning unmanned traffic management (a system referred to as “U‐Space”) furthers that commitment. Accordingly, drone operators must avail themselves
Samar Abbas Nawaz
wiley   +1 more source

Fatigue Crack Nucleation and Growth in Recrystallized Annealed Ti‐6Al‐4V Combat Aircraft Structures

Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 4, Page 1460-1471, April 2026.
ABSTRACT In the Swiss Air Force (SAF) F/A‐18C/D Hornet fleet, recrystallized annealed Ti‐6Al‐4V was selected for the wing carry through bulkheads to meet their demanding operational usage profile requirements that included increased airframe strength and toughness.
I. Field, B. Main, M. Jones, S. Barter, R. F. do Rosario, M. Figliolino   +5 more
wiley   +1 more source

Status of airworthiness requirements, risks and challenges for obtaining TC of person-carrying eVTOL aircraft

Hangkong gongcheng jinzhan
Obtaining a type certificate(TC) is a necessary prerequisite for the commercial operation of person-carrying electric vertical take-off and landing(eVTOL) aircraft, it is necessary to conduct the relevant airworthiness research for TC certification ...
ZHANG Miaochan, LI Lei, SUN Zhonglei, LIANG Wei   +3 more
doaj   +1 more source

Optimization in Conceptual Design of a BWB UAV Using an Adaptive Kriging‐Based Surrogate Model

Engineering Reports, Volume 8, Issue 2, February 2026.
An adaptive Kriging‐based framework for Blended Wing Body UAV optimization is presented. The exploitation‐oriented strategy yields a 14.5% range improvement, while sensitivity analysis identifies fuel mass as the dominant parameter for efficient conceptual design. ABSTRACT To improve optimization efficiency in the conceptual design of Blended Wing Body
Xinshi Suo, Yu Wang, Zhouwei Fan, Tengzhou Xu   +3 more
wiley   +1 more source

Blockchain and Quantum Technologies for Securing the Global Nuclear Supply Chain: Synergies, Applications, Technical Challenges and Opportunities

Journal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.
ABSTRACT The infiltration of counterfeit, fraudulent, and suspect items into civil nuclear supply chains, notably within power generation and medical isotope production, poses severe safety and security threats. The ever‐increasing growth in nuclear installations (70 power plants are under construction and another 100 are in the planning stage) and the
Hafiz Ahmed
wiley   +1 more source

Space Weather and Low‐Altitude Drone Economy

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Unmanned Aerial Vehicles (UAVs) are becoming integral to the emerging low‐altitude economy, operating primarily below 3,000 m for applications such as logistics, inspection, precision agriculture, and urban air mobility. The safe and reliable operation of UAVs depends critically on communication, navigation, and surveillance (CNS) systems ...
Dabin Xue, Qing‐He Zhang, Xueshang Feng, Chi Wang   +3 more
wiley   +1 more source

Safety Assessment of Critical Aircraft Systems Under Multisource Uncertainty Based on Evidence Network

International Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.
As civil aircraft components become more autonomous in China, airworthiness certification is facing the problem of insufficient failure data, leading to challenges in terms of uncertainty. Traditional probabilistic models struggle to effectively integrate multisource uncertainties, limiting their application in data‐scarce scenarios.
Nve Xiao, Boyang Li, Xiaocong Wang, Jie Bai, Kan Xie   +4 more
wiley   +1 more source