Results 51 to 60 of about 57,243 (263)

Analysis of Entropy Generation and Potential Inhibition in an Aeroengine System Environment

International Journal of Aerospace Engineering, 2022
From a system perspective, the entropy generation of an aeroengine is directly related to the thermal efficiency when the Brayton cycle pressure ratio and maximum temperature remain constant.
Xiaojing Liu, Shuiting Ding, Tian Qiu, Chuankai Liu, Peng Liu, Guo Li, Xiaozhe Zhang   +6 more
doaj   +1 more source

Scalable Laser Processing Enables Transparent, Accretion Scale‐Independent, Ice‐Shedding Glass

Advanced Science, EarlyView.
We demonstrate a scalable laser‐based method to create wave‐like micro‐patterns on glass surfaces that counter the conventional view that roughness increases ice adhesion. These patterns direct crack propagation at the ice–glass interface, enabling low‐force, multi‐directional ice detachment while maintaining substrate transparency. A theoretical model
Fan‐Wei Wang, Anish Pal, Arani Mukhopadhyay, Constantine M. Megaridis, Anish Tuteja   +4 more
wiley   +1 more source

LRNet: lightweight attention-oriented residual fusion network for light field salient object detection

Scientific Reports
Light field imaging contains abundant scene structure information, which can improve the accuracy of salient object detection in challenging tasks and has received widespread attention.
Shuai Ma, Xusheng Zhu, Long Xu, Li Zhou, Daixin Chen   +4 more
doaj   +1 more source

Research on Configuration Control Technology for Civil Aircraft Flight Test Based on Modular Design [PDF]

E3S Web of Conferences
A configuration control method, based on modular design, is proposed to solve the problem that the aircraft configuration changes due to design changes, and the flight test is difficult to carry out.
Xue Jikun, Zhang Xinyuan, Yang Lin, Duan Gang   +3 more
doaj   +1 more source

Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics

Advanced Science, EarlyView.
Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley   +1 more source

Optimization of Powerful Two-stage Screw Centrifugal Pump

MATEC Web of Conferences, 2018
The article presents a refining method for a two-stage screw centrifugal pump by the joint usage of mathematical optimization software IOSO, meshing complex NUMECA and CFD software ANSYS CFX.
Baturin Oleg, Popov Grigorii, Kolmakova Daria, Zubanov Vasilii, Novikova Julia, Korneeva Anastasia   +5 more
doaj   +1 more source

Light‑Driven Propulsion of Graphene Aerogels in Microgravity

Advanced Science, EarlyView.
Ultralight graphene aerogels convert laser light into thrust. Parabolic‐flight experiments directly compare their motion in microgravity and at 1 g, revealing order‐of‐magnitude enhancements in distance, velocity, and transient thrust when weight and friction are removed (∼50 times enhancement).
Omnia Khattab, Rami Elkaffas, Basel Altawil, Omar Alsuwaidi, Afnan Almubashir, Claire Perfetti, Shanavas Shajahan, Marco Braibanti, Sean Swei, Carlo Saverio Iorio, Yarjan Abdul Samad   +10 more
wiley   +1 more source

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios, Léon Chiriatti, Simon Poppinga, Thomas Speck, Vincent Le Houérou   +4 more
wiley   +1 more source

Aeroservoelastic analysis method for mixed-command fault of flight control system

Hangkong gongcheng jinzhan
Large civil aircraft fly-by-wire flight control systems may experience a fault condition where both normal mode and direct mode control commands are output simultaneously. It is necessary to propose a method to demonstrate the airworthiness compliance of
DING Luning, YANG Fei, LI Peng
doaj   +1 more source

Robust Reinforcement Learning Control Framework for a Quadrotor Unmanned Aerial Vehicle Using Critic Neural Network

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai, Yefeng Yang, Tao Huang, Boyang Li   +3 more
wiley   +1 more source