Results 41 to 50 of about 233,826 (189)

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

Flight test: Supporting the investigation of factors affecting loss of control of light aircraft [PDF]

, 2009
A quarter of all fatal General Aviation accidents in the UK during the period 1980 to 2006 involved Loss of Control (LoC) in Visual Meteorological Conditions (VMC).
Gratton, GB, Bromfield, MA
core   +4 more sources

Analysis of certification requirements for the organization-developer of products of civil and state aviation

Авіаційно-космічна техніка та технологія, 2021
Certification of developers, manufacturers and aviation equipment for civil aviation is carried out by the State Aviation Administration of Ukraine in accordance with the requirements of the Aviation Regulations APU-21 (Part-21).
Анна Николаевна Маринина, Сергей Михайлович Степаненко, Виталий Григорьевич Харченко   +2 more
doaj   +1 more source

Evaluation of Graphene Oxide–Modified Repair Methodologies in Carbon Fiber Reinforced Polymer Composites for Aerospace Applications

Polymer Composites, Volume 47, Issue 17, Page 15902-15915, 10 September 2026.
Schema 1. Schematic representation of the graphene oxide (GO)‐modified wet lay‐up repair strategy for CFRP laminates, illustrating stepwise ply removal, incorporation of GO into the epoxy repair matrix, and the enhanced mechanical performance of the repaired laminate.
Togay Yildirim, Tugba Soganci Aras
wiley   +1 more source

Concurrent Multi‐Scale Simulation of Progressive Damage in Laminated Composites Using Shell Finite Elements

International Journal for Numerical Methods in Engineering, Volume 127, Issue 16, 30 August 2026.
ABSTRACT This paper presents a study on multi‐scale modelling of progressive damage model in laminated composites using shell finite elements, with considerations for the effects of manufacturing defects. The approach utilises second‐order homogenisation with 5‐parameter shell formulation to capture the effects of complex sub‐structural geometry and ...
Aewis K. W. Hii, Stephen R. Hallett, Bassam El Said   +2 more
wiley   +1 more source

Airworthiness study on civil aircraft engine operating characteristics

Hangkong gongcheng jinzhan
Engine operating characteristics of civil aircraft engines are one of the most basic and complex verification subjects in the airworthiness certification process of the Part 25 "airworthiness standard for transport aircraft" of China civil aviation ...
DENG Tianze, YANG Fei, ZHU Yan, QIU Jian, ZHONG Weixing   +4 more
doaj   +1 more source

Hybrid‐Electric Aeroengines: Strategic Technical Pathways and Environmental Implications

Advanced Energy and Sustainability Research, Volume 7, Issue 8, August 2026.
Hybrid‐electric propulsion systems represent a transformative frontier in aerospace engineering, critical for achieving sustainable aviation. This review synthesizes recent breakthroughs in hybrid‐energy aero‐engine design, critically evaluating key technological pillars.
Yankun Wang, Mingkui Wang
wiley   +1 more source

Numerical Simulation Research on Separation Process of Jettisoned FDR from Civil Aircraft

Engineering Proceedings
The safety of Jettisoned FDRS in the process of separation from an aircraft is a key factor in designing Jettisoned FDRs and enabling them to pass airworthiness certification and be widely used in civil aircraft.
Feifan Zhang, Zhaoke Xu
doaj   +1 more source

Analysis of the Relationship between CCAR-25 and CCAR-33 Airworthiness

Hangkong gongcheng jinzhan, 2018
The research on the relationship between the terms of airworthiness of transport category aircraft and aeroengine is of great importance to the swift development of airworthiness certification of China.
Han Bingbing, Li Xin, Fu Han, Teng Jinfang   +3 more
doaj   +1 more source

Transcranial Ultrasound in the Helicopter Emergency Medical Services—A Feasibility Study

Journal of Neuroimaging, Volume 36, Issue 4, July/August 2026.
ABSTRACT Background and Purpose Transcranial color‐coded Doppler (TCCD) is a noninvasive, widely available diagnostic method that may identify large vessel occlusion (LVO) in acute stroke patients. This study aimed to explore whether helicopter emergency medical services (HEMS) physicians could use TCCD in a prehospital setting to identify the proximal
Ingrid N. Rognes, Pål C. W. Morberg, Henriette S. Jæger, Marius Rehn, Kristine Stø, Lars Alteheld, Else Charlotte Sandset, Maren R. Hov, Karianne Larsen   +8 more
wiley   +1 more source