Results 21 to 30 of about 1,178,972 (334)

Fatigue Crack Propagation Path and Life Prediction Based on XFEM

open access: yesXibei Gongye Daxue Xuebao, 2019
Based on the theory of linear elastic fracture mechanics, the relationships between material constants c3, c4 required in Abaqus and constants C, m in Paris formula are derived.

doaj   +1 more source

Review of hybrid electric powered aircraft, its conceptual design and energy management methodologies

open access: yesChinese Journal of Aeronautics, 2021
The paper overviews the state-of-art of aircraft powered by hybrid electric propulsion systems. The research status of the design and energy management of hybrid aircraft and hybrid propulsion systems are further reviewed.
Ye Xie   +4 more
semanticscholar   +1 more source

Aircraft Target Detection in Remote Sensing Images Based on Improved YOLOv5

open access: yesIEEE Access, 2022
Dealing with the insufficient detection accuracy and speed of aircraft targets in remote sensing images under complex background, this paper proposes a new detection method, YOLOv5-Aircraft, based on the YOLOv5 network.
Shun Luo   +3 more
semanticscholar   +1 more source

The Parametric Aircraft Noise Analysis Module - status overview and recent applications [PDF]

open access: yes, 2011
The German Aerospace Center (DLR) is investigating aircraft noise prediction and noise reduction capabilities. The Parametric Aircraft Noise Analysis Module (PANAM) is a fast prediction tool by the DLR Institute of Aerodynamics and Flow Technology to ...
Bertsch, Lothar   +3 more
core   +1 more source

Evaluation method of airworthiness compliance of civil aircraft flight deck door against bullet penetration

open access: yesHangkong gongcheng jinzhan, 2023
The civil aircraft flight deck door system is installed in the aircraft cabin to block the cockpit area and cabin area. In addition to providing normal access to the cockpit, it must have bullet proof and intrusion prevention functions to prevent non ...
MA Jun, LI Songze, ZHAO Xuwei
doaj   +1 more source

Airborne Equipment Maintenance Management System Based on RFID Technology

open access: yesHangkong gongcheng jinzhan, 2022
In recent years,the radio frequency identification(RFID)technology is widely used in the field of civil aviation airport transportation,but it is rarely used in the field of domestic civil aviation manufacturing and aircraft operation and maintenance,and
ZHU Zhisheng, DING Shujun, XU Songlin
doaj   +1 more source

Toward more electric powertrains in aircraft: Technical challenges and advancements

open access: yesCES Transactions on Electrical Machines and Systems, 2021
The main purpose of this article is to provide an instructive review of the technological challenges hindering the road toward more electric powertrains in aircraft.
Joseph Benzaquen   +2 more
semanticscholar   +1 more source

Electric Power Systems in More and All Electric Aircraft: A Review

open access: yesIEEE Access, 2020
Narrow body and wide body aircraft are responsible for more than 75% of aviation greenhouse gas (GHG) emission and aviation, itself, was responsible for about 2.5% of all GHG emissions in the United States in 2018.
Ashkan Barzkar, M. Ghassemi
semanticscholar   +1 more source

Aircraft Hybrid-Electric Propulsion: Development Trends, Challenges and Opportunities

open access: yesJournal of Control Automation and Electrical Systems, 2021
The present work is a survey on aircraft hybrid electric propulsion (HEP) that aims to present state-of-the-art technologies and future tendencies in the following areas: air transport market, hybrid demonstrators, HEP topologies applications, aircraft ...
M. A. Rendón   +3 more
semanticscholar   +1 more source

The Influence of Bleeding Direction on Starting Performance of Three-Dimensional Inward Turning Inlet

open access: yesInternational Journal of Aerospace Engineering, 2023
Bleeding is an effective method to improve the starting performance of the inlet, and the conventional method often adopts the bleeding to longitudinal direction.
Tianyu Gong   +4 more
doaj   +1 more source

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