Results 51 to 60 of about 29,751 (218)

Performance modeling of flame-assisted fuel cells based on a swirl burner

AIP Advances
Aiming at the problems of a narrow operating range and complex modeling of Flame-assisted Fuel Cells (FFCs), an FFC system based on a swirl burner is proposed, and neural network algorithms are used to construct the prediction model for the polarization ...
Yiming Liu, Jianguo Tan, Zihan Kuai, Dongdong Zhang, Yao Liu   +4 more
doaj   +1 more source

Development of Automated Processes for Three-Dimensional Numerical Simulation of Compressor Performance Characteristics

Applied Sciences
Compressor characteristic evaluation is a critical step in design and optimization. Corrected characteristic curves are typically derived via experimental testing or CFD computation which is typically executed through manual manipulation. For compressors
Junbing Liu, Xiaoqiang Fan, Xiao Tang
doaj   +1 more source

Investigation on the Opposing Jet in the Hypersonic Rarefied Flow over a Vehicle Based on the DSMC Method

Actuators, 2022
In this paper, an opposing jet is applied to the space shuttle arc leading edge and the lifting body cone leading edge in the hypersonic condition of the rarefied flow field.
Yi Shen, Jun Zhang, Xiao Xu, Jing Liu, Zhaoming Zhang, Yanmei Jiao   +5 more
doaj   +1 more source

Time‐Modulated Optomechanics Reveal Energy Flow and Inelastic Interactions Between Acoustic Phonons in Nanomembranes

Laser &Photonics Reviews, EarlyView.
Temporal interfaces are abrupt refractive index changes used in time‐varying optics, but also transitions to nonequilibrium states. This work explores the inelastic scattering of time‐varying light by nonthermal acoustic phonons in the vicinity of temporal interfaces.
Anuj Kumar Dhiman, Piotr Graczyk, Tobias Held, Mikolaj Pochylski, Kleoniki Sympoura, Rafal Bialek, Jacek Gapinski, Bahram Djafari Rouhani, Baerbel Rethfeld, Bartlomiej Graczykowski, Thomas Vasileiadis   +10 more
wiley   +1 more source

Future Prospects for Hypersonic Flight Test For University Students [PDF]

, 2005
The transport to space of satellites and experiments with conventional expandable rockets is a very expensive and time demanding business and therefore almost prohibitive for Universities and High-School or Colleges laboratories.
Behrens, J., Lehmann, P., Bozic, O., Longo, J.M.A.   +3 more
core  

The Effects of Compression Direction on the Performance of a Two-Dimensional Inlet Mounted on the Aft Body

Applied Sciences
The aft-body mounted inlet of a hypersonic vehicle has garnered attention for its potential to shorten the propulsion system. This study aims to explore the influence of compression direction on the performance of the hypersonic inlet attached to the ...
Jingfan Chen, Xiaoqiang Fan, Bing Xiong
doaj   +1 more source

Mach 4 Simulating Experiment of Pre-Cooled Turbojet Engine Using Liquid Hydrogen

Aerospace, 2022
This study investigated a pre-cooled turbojet engine for a Mach 5 class hypersonic transport aircraft. The engine was demonstrated under takeoff and Mach 2 flight conditions, and a Mach 5 propulsion wind tunnel test is planned.
Hideyuki Taguchi, Kenya Harada, Hiroaki Kobayashi, Motoyuki Hongoh, Daisaku Masaki, Shunsuke Nishida   +5 more
doaj   +1 more source

Dynamic Performance Enhancement of a High‐Agility Hypersonic Mechanical System via a Learning‐Augmented Robust Control Architecture

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori, Seyed Hossein Sadati   +1 more
wiley   +1 more source

Multi-Disciplinary Analysis and Optimization of Hypersonic Transport Aircrafts [PDF]

, 2008
The development and first applications to a Mach 6 hypersonic transport configuration of a new multidisciplinary optimization (MDO) process is presented.
Duveau, P., Carrier, G., Thepot, R., Dittrich, R., Salah El Din, I., Longo, J.M.A.   +5 more
core  

G-Agent: A Large Language Model-Driven Multi-Agent Framework for Automated Configuration Optimization of Scramjet Cavity Combustors

Aerospace
This paper presents a G-Agent, a large language model (LLM)-driven multi-agent framework that automates the optimization workflow for an axisymmetric cavity-based scramjet combustor. The framework integrates a supersonic compressible reacting flow solver
Yuchen Fang, Dapeng Xiong, Guoyan Zhao, Yixin Yang, Hongbo Wang, Mingbo Sun   +5 more
doaj   +1 more source