Results 71 to 80 of about 1,247,418 (410)
Energy Consumption Optimization in Trajectory Planning for Fuel Cell Hybrid Uavs Based On HMPC
Advanced Robotics Research, EarlyView.The endurance limitation of multirotor drones is a critical challenge. This study adopts a hybrid power system of fuel cells and lithium‐ion batteries. Using Nondominated Sorting Genetic Algorithm II, it integrates trajectory planning with energy management optimization.
Xindi Wang +7 more
wiley +1 more source
IEEE AccessAero-engine control systems need to be immune to electromagnetic (EM) noise and function reliably in EM environments during the entire flight to guarantee flight safety.
Bowen Wang, Shuyan Zhang, Zhe Zhang
doaj +1 more source
Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced Robotics Research, EarlyView.Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui +5 more
wiley +1 more source
Sagnac Interference-Based Contact-Type Fiber-Optic Vibration Sensor
PhotonicsThe observation and evaluation of vibration signals is crucial for enhancing engineering quality and ensuring the safe operation of equipment. This paper proposes a fiber-optic vibration sensor based on the Sagnac interference principle. The polarization-
Hongmei Li +8 more
doaj +1 more source
Local stress analysis of a defective rolling bearing using an explicit dynamic method
Advances in Mechanical Engineering, 2016 This article provides insights into the localized stress in a defect zone of the rolling bearings when the rolling elements pass through the defect. A dynamic finite element model of a rolling bearing with an artificial round defect in its outer raceway ...
Zhinan Zhang, Weimin Ding, Huifang Ma
doaj +1 more source
Advanced Sustainable Systems, EarlyView.Innovative fabrication methods are crucial for developing next‐generation supercapacitors. These techniques optimize electrode structures, boosting energy and power density while enabling scalable production. By overcoming current limitations, advanced fabrication unlocks supercapacitors' potential as efficient, reliable energy storage for diverse ...
Nikita A. Wadodkar +8 more
wiley +1 more source
A Degradable Bioinspired Flier with Aerogel‐Based Colorimetric Sensors for Environmental Monitoring
Advanced Science, EarlyView.Biodegradable fliers are developed inspired by Tipuana tipu samaras, integrating cellulose nanocrystal aerogel (CNCa) sensors loaded with natural dyes for pH and ammonia detection. The lightweight, degradable fliers mimic natural morphology and aerodynamics, offering an eco‐friendly, scalable solution for in situ environmental monitoring after passive ...
Gianpaolo Gallo +4 more
wiley +1 more source
AN ADAPTIVE MODEL-BASED FRAMEWORK FOR PROGNOSTICS OF GAS PATH FAULTS IN AIRCRAFT GAS TURBINE ENGINES
International Journal of Prognostics and Health Management, 2019 This paper presents an adaptive framework for prognostics in civil aero gas turbine engines, which incorporates both performance and degradation models, to predict the remaining useful life of the engine components that fail predominantly by gradual ...
Ogechukwu Alozie +4 more
doaj +1 more source
Advanced Science, EarlyView.In this study, by incorporating 4‐nitrophenyl phosphate (PNPP) into [4‐(3,6‐dimethyl‐9H‐carbazol‐9‐yl)butyl]phosphonic acid (Me‐4PACz), an efficient co‐assembled monolayer (Co‐SAM) is constructed to modulate the bottom interface region, thereby developing highly efficient and stable inverted flexible perovskite solar cells.
Chunlong Wang +16 more
wiley +1 more source
, 2018 Escalating fuel prices and carbon dioxide emission are causing new interest in methods to increase the thrust force of an aircraft engine with limitation of fuel consumption.
S. Saadon
semanticscholar +1 more source