Results 121 to 130 of about 14,137 (299)

Numerical Studies on Thrust Augmentation in High Area Ratio Rocket Nozzles by Secondary Injection

open access: yesJournal of Applied Fluid Mechanics, 2017
Single stage to orbit propulsion devices are being developed as part of low cost access to space endeavors. Sea level operation of high area ratio rocket nozzle used in rocket engines leads to an overexpanded flow condition resulting in high side loads ...
S. Shyji   +3 more
doaj  

Enhancement of Film Cooling Effectiveness in a Supersonic Nozzle. [PDF]

open access: yesEntropy (Basel), 2023
Somasekharan N   +5 more
europepmc   +1 more source

Rocket motion [PDF]

open access: yesarXiv
The motion of rockets is part of the study devoted to the motion of variable mass systems. Notably those in which the mass leaves permanently the considered system. Rockets are propelled forward by the reaction force produced by the hot exhausted gases ejected from their tales in the rearward direction.
arxiv  

The Proton Therapy Nozzles at Samsung Medical Center: A Monte Carlo Simulation Study using TOPAS [PDF]

open access: yesarXiv, 2015
To expedite the commissioning process of the proton therapy system at Samsung Medical Center (SMC), we have developed a Monte Carlo simulation model of the proton therapy nozzles using TOPAS. At SMC proton therapy center, we have two gantry rooms with different types of nozzles; a multi-purpose nozzle and a dedicated scanning nozzle.
arxiv  

Rocket nozzle thermal shock tests in an arc heater facility [PDF]

open access: yes
A rocket motor nozzle thermal structural test technique that utilizes arc heated nitrogen to simulate a motor burn was developed. The technique was used to test four heavily instrumented full-scale Star 48 rocket motor 2D carbon/carbon segments at ...
Painter, James H., Williamson, Ronald A.
core   +1 more source

A feasibility study on using inkjet technology, micropumps, and MEMs as fuel injectors for bipropellant rocket engines

open access: yes, 2008
Control over drop size distributions, injection rates, and geometrical distribution of fuel and oxidizer sprays in bi-propellant rocket engines has the potential to produce more efficient, more stable, less polluting rocket engines.
Bramanti, Cristina   +4 more
core   +1 more source

Metals from spacecraft reentry in stratospheric aerosol particles. [PDF]

open access: yesProc Natl Acad Sci U S A, 2023
Murphy DM   +10 more
europepmc   +1 more source

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