Results 41 to 50 of about 368 (185)

A Component-Decoupled and Physics-Constrained Hybrid Modeling Framework for Turbojet Engine Performance Prediction

Aerospace
Accurate turbojet engine performance prediction is crucial for condition monitoring, health management, and safe operation. Conventional component-level models require iterative solutions of strongly nonlinear matching equations and are sensitive to un ...
Huaiping Gu, Linyuan Jia, Hui Duan, Jiajia Wei, Zhen Liu   +4 more
doaj   +1 more source

RUL Prediction of Rolling Bearings via Adaptive Multi‐Scale Feature Alignment and Semantic Fusion

Engineering Reports, Volume 8, Issue 6, June 2026.
An adaptive multi‐scale framework integrates denoising, feature fusion, and degradation‐stage‐driven alignment to suppress noise, capture local–global degradation patterns, and enable robust and accurate remaining useful life prediction. ABSTRACT Remaining useful life (RUL) prediction of rolling bearings is essential for intelligent maintenance and ...
Yuanyuan Wu, Ning Li
wiley   +1 more source

Degradation Prediction of Proton‐Exchange Membrane Fuel Cell Tested Under Static and Quasi‐Dynamic Operating Conditions

Fuel Cells, Volume 26, Issue 3, June 2026.
ABSTRACT The viability and extended lifetime of proton‐exchange membrane (PEM) fuel cells are essential to enable hydrogen electric aviation. Their reliability, that is, the ability to maintain stable performance over long operational periods under varying environmental and load conditions, is a critical factor for their adoption in aviation systems ...
Matthew Georgio Dekkers, Marcia L. Baptista, Helmut Prendinger   +2 more
wiley   +1 more source

Numerical Simulation of Combustion Chamber for Button Turbojet Engine

MATEC Web of Conferences, 2016
To provide reference data for ultra-micro combustor, a new type button turbojet engine was designed and simulated the combustion’s steady-state process.
Ma Hongpeng, Fang Shuzhou, Gao Hang, Li Teng, Fang Guanlin   +4 more
doaj   +1 more source

Investigation of Micro Gas Turbine Systems for High Speed Long Loiter Tactical Unmanned Air Systems

Aerospace, 2019
In this study, the on-going research into the improvement of micro-gas turbine propulsion system performance and the suitability for its application as propulsion systems for small tactical UAVs (<600 kg) is investigated.
James Large, Apostolos Pesyridis
doaj   +1 more source

Advances in Atmospheric Water Harvesting Hydrogels: A Review of Material Design, System Integration, and Practical Applications

Small Structures, Volume 7, Issue 6, June 2026.
This review presents a multiscale optimization framework for hydrogel‐based sorbent atmospheric water harvesting (SAWH), integrating material chemistry, structural engineering, and device‐level strategies. It details how synergy between absorption, desorption, and thermal management leads to efficient, sustainable atmospheric water harvesting and ...
Ting‐Ting Li, Pengle Cao, Wangkai Jiang, Ke‐Qin Zhang   +3 more
wiley   +1 more source

Smoke Diffusion Characteristics for Smoke Generator Based on Turbojet

Nanjing Hangkong Hangtian Daxue Xuebao
Based on the discrete phase model in the simulation software FLUENT， the smoke diffusion characteristics under high-speed jet action of a smoke generator powered by a turbojet engine are calculated.
CAO Guangzhou, REN Rui, SUN Hongliang
doaj   +1 more source

Investigating Breathing Dynamics of a 110 kV Oil‐Immersed Transformer Using Thermal‐Fluid‐Structure Interaction Modelling

High Voltage, Volume 11, Issue 3, Page 668-680, June 2026.
ABSTRACT The breathing system of an oil‐immersed transformer is of vital importance for maintaining equilibrium between internal and external pressures, with any malfunction potentially disrupting the transformer's stable operation. This study develops a thermal–fluid–structure interaction (TFSI) model to simulate the breathing phenomenon in a 110 kV ...
Lujia Wang, Guangyi Chen, Dong Shang, Xiang Zhang, Haitao Yang, Jianwen Zhang   +5 more
wiley   +1 more source

Numerical Analyses of Surge Process in a Small-Scale Turbojet Engine by Three-Dimensional Full-Engine Simulation

Aerospace
Surge is a typical aerodynamic instability phenomenon in the compressors of aeroengines. The surge can lead to severe performance degradation and even structural damage to the engine and the air vehicle, making it a longstanding critical concern in the ...
Mengyang Wen, Heli Yang, Xuedong Zheng, Weihan Kong, Zechen Ding, Rusheng Li, Lei Jin, Baotong Wang, Xinqian Zheng   +8 more
doaj   +1 more source

Cruising Together: How the Europeans Tipped the Scales for the Ground‐Launched Cruise Missile

Global Policy, Volume 17, Issue 3, Page 506-511, June 2026.
ABSTRACT In the 1970s, the United States adopted the ground‐launched cruise missile (GLCM) despite opposition from the military and the lack of an established military requirement. The case is, thus, at odds with common models of military innovation that rely on military utility and organizational interests for their explanatory power.
Tim Thies
wiley   +1 more source