Results 101 to 110 of about 8,678 (302)

Hall-Effect Thruster Utilizing Bismuth as Propellant [PDF]

A laboratory-model Hall-effect spacecraft thruster was developed that utilizes bismuth as the propellant. Xenon was used in most prior Hall-effect thrusters.
Gasdaska, Charles, Hruby, Vlad, Robin, Mike, Szabo, James   +3 more
core   +1 more source

Secondary electron emission yield in the limit of low electron energy

, 2013
Secondary electron emission (SEE) from solids plays an important role in many areas of science and technology.1 In recent years, there has been renewed interest in the experimental and theoretical studies of SEE.
Andronov, A. N., Demidov, V. I., Kaganovich, I. D., Raitses, Y., Smirnov, A. S., Startsev, E. A.   +5 more
core   +1 more source

Description of the skull, braincase, and dentition of Moschognathus whaitsi (Dinocephalia, Tapinocephalia), and its palaeobiological and behavioral implications

The Anatomical Record, EarlyView.
Abstract A subadult Moschognathus whaitsi from the Eastern Cape Province, South Africa, was scanned using synchrotron radiation X‐ray computed tomography (SRXCT). Its subadult state allowed the cranial bones and teeth to be identified and individually reconstructed in 3D.
Tristen Lafferty, Luke A. Norton, Aliénor Duhamel, Julien Benoit   +3 more
wiley   +1 more source

Influence of Hall current & Lorentz force with nonlinear thermal radiation in an inclined slip flow of couple stress fluid over a Riga plate

Ain Shams Engineering Journal
Partially ionised fluids subject to an external magnetic field results in a completely different dynamical behaviour. Very few studies are conducted to explore the fascinating properties of Hall current and Ion slip in fluid flows. Flow over a Riga plate
Siddra Rana, Rabil Tabassum, Rashid Mehmood, ElSayed M Tag-eldin, Rasool Shah   +4 more
doaj   +1 more source

High power Hall thrusters [PDF]

35th Joint Propulsion Conference and Exhibit, 1999
Robert Jankovsky, Sergey Tverdokhlebov, David Manzella   +2 more
openaire   +1 more source

Flow Control of Liquid Metal Propellants for In-Space Electric Propulsion Systems [PDF]

, 2010
Operation of Hall thrusters with bismuth propellant has been shown to be a promising path for development of high-power (140 kW per thruster), high performance (8000s I(sub sp at >70% efficiency) electric propulsion ...
Bonds, Kevin W., Polzin, Kurt A.
core   +1 more source

Functional anatomy, jaw mechanisms, and feeding behavior of Dunkleosteus terrelli (Placodermi, Arthrodira)

The Anatomical Record, EarlyView.
A new musculoskeletal reconstruction and revision of the cranio‐mandibular anatomy of the Devonian arthrodire placoderm Dunkleosteus terrelli from a comparative and functional anatomical perspective. Dunkleosteus is a specialized arthrodire with many specializations for feeding on large vertebrates, and many of its features are part of broader ...
Russell K. Engelman, Robert K. Carr, Kate Trinajstic, Zerina Johanson, Oleg A. Lebedev   +4 more
wiley   +1 more source

Modeling of processes in porous thermal throttles for iodine flow control for space applications

Results in Engineering
There has been a notable surge in the advancement of space technology across various applications - from dynamic missions, such as remote sensing of the Earth to missions involving servicing other satellites or collecting debris.
Pavel O. Savelev, Aslan D. Pashaev, Andrei I. Shumeiko   +2 more
doaj   +1 more source

Hall Thruster.

Journal of the Japan Society for Aeronautical and Space Sciences, 1998
Yoshihiro ARAKAWA, Kimiya KOMURASAKI, Miharu HIRAKAWA   +2 more
openaire   +2 more sources

Analysis of electric propulsion electrical power conditioning component technology, volume 2 Final report [PDF]

Large solar arrays to provide power for electric propulsion engine for Mars mapper ...
Jalichandra, P., Klynn, L., Shattuck, R.
core   +1 more source