Results 61 to 70 of about 1,531,293 (230)

Aero‐breakup of droplets: Recent progress and outlook

Droplet, EarlyView.
This work systematically reviews the recent progress of droplet aero‐breakup studies. The discussion covers the research history, theoretical framework, new breakup mode discoveries, influence of droplet fluid properties, scenarios of multi‐droplet and droplet cloud, and finally, an outlook for future explorations is presented. Abstract Aero‐breakup of
Ben Guan, Weijie Zhang, Jianguo Wang, Chih‐Yung Wen, Yu Liang   +4 more
wiley   +1 more source

Performances Study of a Hybrid Rocket Engine

INCAS BULLETIN, 2018
This paper presents a study which analyses the functioning and performances optimization of a hybrid rocket engine based on gaseous oxygen and polybutadiene polymer (HTPB). Calculations were performed with NASA CEA software in order to obtain the parameters resulted following the combustion process.
openaire   +2 more sources

Analysis of thermal chemical and physical properties of paraffin and beeswax blended fuels for hybri

Journal of Thermal Engineering
Fuels made of paraffin and beeswax was created for hybrid rocket engines, and carbon, boron, and aluminium powders were added. Scientists used Scanning Electron Microscopy, X-ray Diffraction, and Fourier Transform Infrared Spectroscopy for study of these
Saravanan G, Avi THUMAR, Ayush DEVAK, Amritansh SINGH   +3 more
doaj   +1 more source

Programmable solar‐blind ultraviolet sensors enabling integrated single‐pixel sensing and neuromorphic processing

InfoMat, EarlyView.
A Schottky photodiode based on (Al0.14Ga0.86)2O3 was developed, in which the sensing and processing functions were temporally decoupled through bias voltage modulation. By integrating single‐pixel imaging with a reservoir computing architecture, a comprehensive intelligent vision system was constructed.
Hongbin Wang, Zhuangzhuang Li, Zhongshi Ju, Cheng Zhou, Peng Li, Lizhi Ding, Jiangang Ma, Zhongqiang Wang, Ya Lin, Haiyang Xu, Yichun Liu   +10 more
wiley   +1 more source

Concordance Between MR Safety Guidance Documents on Conditions for a Safe MR Environment

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Environmental conditions established at facility design, construction, updates, and/or procurement of specialized equipment are the foundation of safe MR practice. Establishing an institutional MR safety program must take into consideration the conditions of the MR environment, and staff training should be tailored to its features ...
Ives R. Levesque, Véronique Fortier, Jorge Campos Pazmiño, Evan McNabb   +3 more
wiley   +1 more source

Modeling of High Density Polyethylene Regression Rate in the Simulation of Hybrid Rocket Flowfields

Aerospace, 2019
Numerical analysis of hybrid rocket internal ballistics is carried out with a Reynolds-averaged Navier−Stokes solver integrated with a customized gas−surface interaction wall boundary condition and coupled with a radiation code based on the ...
Daniele Bianchi, Giuseppe Leccese, Francesco Nasuti, Marcello Onofri, Carmine Carmicino   +4 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

Predictive cfd model for internal ballistics of hybrid rocket engines using supercritical paraffin-wax and oxygen

, 2019
A fully predictive numerical model, considering the effects of fluid-surface interaction, radiation, chemistry, and turbulence, is developed for oxygen-paraffin hybrid rocket engines.
Bianchi D., Migliorino M. T., Nasuti F.
core   +1 more source

Characterization and manufacturing of a paraffin wax as fuel for hybrid rockets

Propulsion and Power Research, 2018
The hybrid propulsion performed with paraffin waxes exhibits most attractive capabilities compared to solid or liquid engines, e.g., throttleability and re-ignition, alongside higher regression rates compared to the conventional hydroxyl terminated ...
F. Piscitelli, G. Saccone, A. Gianvito, G. Cosentino, L. Mazzola   +4 more
doaj   +1 more source

Screening Surface Modifications to Benzene to Improve Solubility in Hydroxyl‐Terminated Polybutadiene (HTPB)—A DFT Demonstration

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT The objective of this paper is to demonstrate the advantage of computationally pre‐screening surface‐modifying material candidates, using density functional theory (DFT), to inform experimental synthesis and formulation efforts. This demonstration focuses on improving the solubility of benzene‐based materials in hydroxyl‐terminated ...
Samantha E. Knoth
wiley   +1 more source