Results 21 to 30 of about 3,749 (263)

Numerical Study on Pool Film Boiling of Liquid Hydrogen over Horizontal Cylinders

open access: yesEnergies, 2022
Due to the low boiling point of hydrogen, the boiling phenomenon is usually encountered in the applications of liquid hydrogen. The underlying mechanism as well as the physical performance of film boiling over horizontal cylinders are not yet fully ...
Jiaojiao Wang, Yanzhong Li, Lei Wang
doaj   +1 more source

Monitoring Strain Response of Epoxy Resin during Curing and Cooling Using an Embedded Strain Gauge

open access: yesSensors, 2020
The present work describes the monitoring system of the real-time strain response on the curing process of epoxy resin from the initial point of curing to the end, and the change in strain during temperature changes.
Hongyu Dong   +9 more
doaj   +1 more source

Propeller Flaps

open access: yesIndian Journal of Plastic Surgery, 2022
AbstractA propeller flap is an islanded flap that reaches the recipient site through an axial rotation around its vascular axis. The degree of rotation varies from 90 degrees to 180 degrees. It is a highly reliable local reconstructive option. These flaps are simple, single-stage, easy to harvest, and not constrained by routine length-to-width ratios ...
Nikhil Panse, Ankur Karanjkar
openaire   +3 more sources

Three-Dimensional Numerical Modeling of Internal Ballistics for Solid Propellant Combinations

open access: yesMathematics, 2021
The processes that take place within the Internal Ballistics cycle of an artillery round are highly influenced by geometric effects. They are also highly affected by the presence of a combination of energetic materials, such as the propellant, igniter ...
Ramón A. Otón-Martínez   +4 more
doaj   +1 more source

Effects of Surface Waviness on the Nonlinear Vibration of Gas Lubricated Bearing-Rotor System

open access: yesShock and Vibration, 2018
This paper presents the effects of the surface waviness on the nonlinear dynamic performance of a gas bearing-rotor system. The coupled vibration with the elastomer is taken into consideration to fit the actual engineering application. The effects of the
Jian Li   +3 more
doaj   +1 more source

Research on thermal conductivity of HGMs at vacuum in room temperature

open access: yesAIP Advances, 2018
Hollow glass microspheres (HGMs) can be used as thermal insulation materials owing to its hollow structure which brings excellent thermal insulation property and low density.
Ping Wang   +4 more
doaj   +1 more source

Effect of fast-burning compound ACP and catalyst on the combustion performance of Al/Mg-based fuel-rich HTPB propellants

open access: yesFirePhysChem, 2022
In order to solve the problem of weak injection of fuel-rich propellant and to enhance its burning rate, the combustion behaviors of Al/Mg-based fuel-rich HTPB propellants with 40wt% metal content were studied with and without the addition of fast ...
Han Shi   +4 more
doaj   +1 more source

Analiza metodologije za ispitivanje kemijske stabilnosti baruta i raketnih goriva / The analysis of methodology for investigation of chemical stability of propellants

open access: yesVojnotehnički Glasnik, 2006
Kao i sve energetske supstance, baruti i raketna goriva su termodinamički nestabilni, zbog čega, tokom skladištenja, dolazi do njihove kemijske dekompozicije (starenja).
Radun Jeremić, Luka Grbović
doaj   +1 more source

A magnetic damper for low temperature

open access: yesAIP Advances, 2020
A new magnetic damper is developed for the suspension and vibration isolation of precise instruments working in low-temperature and vacuum environments.
Jin Zhen Wang   +3 more
doaj   +1 more source

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