Results 31 to 40 of about 84,409 (357)

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

The Screw Propeller [PDF]

open access: yesProceedings of the Institution of Automobile Engineers, 1915
n ...
openaire   +2 more sources

Análise térmica aplicada ao estudo de materiais energéticos Thermal analysis applied to the study of energetic materials

open access: yesQuímica Nova, 2007
This paper shows different aspects related to the application of different thermal analysis techniques in the study of energetic materials. The criteria used to choose the best technique and an exact approach to adjust the experimental data with a proper
Jony Andrade   +5 more
doaj   +1 more source

Fabrication and investigation of 3D-printed gun propellants

open access: yes, 2020
Gun propellant is the energy source of barrel weapons. A 3D printed gun propellant based on “Stereolithography (SLA)” was developed to overcome the limitation of traditional extrusion technologies.
Weitao Yang   +4 more
semanticscholar   +1 more source

Indicator Method for Determining the Emissivity of Road Transport Means from the Point of Supplied Energy

open access: yesEnergies, 2023
Recently, many activities have been undertaken to reduce the negative impact of transport on the environment, e.g., using propulsion sources and consumed energy. Electric and hybrid vehicles are becoming more and more popular.
Piotr Pryciński   +3 more
doaj   +1 more source

Simulation of gelled propellant doughs isothermal flow through extrusion dies using finite difference method [PDF]

open access: yes, 2017
During the ram extrusion of gelled propellants, the possible flow instabilities can affect the extruded propellant quality. The numerical modelling helps to enhance the geometry of extrusion die, by minimizing the product distortion caused by material ...
Faura Mateu, Félix   +4 more
core   +2 more sources

A brief review of alternative propellants and requirements for pulsed plasma thrusters in micropropulsion applications

open access: yes, 2020
Technological miniaturization has enabled the development of small satellites weighing as little as 1 kg. Unfortunately, there is still a lack of suitable efficient micropropulsion systems at these scales.
W. Ling   +6 more
semanticscholar   +1 more source

An Experimental Study on the Large-Volume Liquid Hydrogen Release in an Open Space

open access: yesApplied Sciences
Liquid hydrogen is one of the high-quality energy carriers, but a large leak of liquid hydrogen can pose significant safety risks. Understanding its diffusion law after accidental leakage is an important issue for the safe utilization of hydrogen energy.
Zhao Zhang   +11 more
doaj   +1 more source

On the combustion of heterogeneous AP/HTPB composite propellants: A review

open access: yesFuel, 2019
The combustion of ammonium perchlorate (AP) in a polymer binder matrix of hydroxyl-terminated-polybutadiene (HTPB) is reviewed, covering the experimental and modeling approaches explored for over a half-century.
Claresta N. Dennis, Brian T. Bojko
semanticscholar   +1 more source

Time-resolved size, velocity, and temperature statistics of aluminum combustion in solid rocket propellants

open access: yes, 2020
The study of time-resolved aluminum combustion mechanisms is essential for understanding the deflagration of ammonium perchlorate-based metalized solid rocket propellants.
Andrew W. Marsh   +4 more
semanticscholar   +1 more source

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