scholarly journals Engineering Model Propellant Feed System Development for an Iodine Hall Thruster Demonstration Mission

2016 ◽  
Author(s):  
Kurt A. Polzin ◽  
Steven R. Peeples ◽  
Armando Martinez ◽  
Joao F. Seixal ◽  
Stephanie Mauro ◽  
...  
Keyword(s):  
System Development ◽  
Hall Thruster ◽  
Engineering Model ◽  
Feed System

scholarly journals STSAT-3 Hall Thruster Propulsion System Development

2010 ◽  
Vol 38 (8) ◽  
pp. 834-841 ◽  
Author(s):  
Hee-Keun Cho ◽  
Kwang-Sun Ryu ◽  
Won-Ho Cha ◽  
Jong-Sup Lee ◽  
Mi-Hee Seo ◽  
...  
Keyword(s):  
System Development ◽  
Propulsion System ◽  
Hall Thruster

scholarly journals Direct Drive Hall Thruster System Development

2003 ◽  
Author(s):  
Andrew Hoskins ◽  
Daniel Homiak ◽  
R. Joseph Cassady ◽  
Tom Kerslake ◽  
Todd Peterson ◽  
...  
Keyword(s):  
System Development ◽  
Hall Thruster ◽  
Direct Drive

Reciprocating Feed System Development

2018 ◽  
Author(s):  
James B. Blackmon ◽  
James Richard ◽  
David Eddleman
Keyword(s):  
System Development ◽  
Feed System

Q/V-band feed system development

2016 ◽  
Author(s):  
Richard Roberts ◽  
Paul Booth ◽  
Graham Fox ◽  
Simon Stirland ◽  
Massimiliano Simeoni
Keyword(s):  
System Development ◽  
Feed System ◽  
V Band

Cross-sectional TEM specimen preparation from magneto-optical disk by ultramicrotomy

1993 ◽  
Vol 51 ◽  
pp. 236-237
Author(s):  
F. Shaapur ◽  
M.J. Kim ◽  
Seh Kwang Lee ◽  
Soon Gwang Kim
Keyword(s):  
System Development ◽  
Thin Foil ◽  
Specimen Preparation ◽  
Material System ◽  
Cross Sectional ◽  
Protective Layers ◽  
New Material ◽  
Diamond Saw ◽  
Original Production ◽  
Thick Medium

TEM characterization and microanalysis of the recording media is crucial and complementary to new material system development as well as quality control applications. Due to the type of material generally used for supporting the medium, i.e., a polymer, conventional macro- and microthinning procedures for thin foil preparation are not applicable. Ultramicrotorny (UM) is a viable option and has been employed in previous similar studies. In this work UM has been used for preparation of XTEM samples from a magneto-optical (MO) recording medium in its original production format.The as-received material system consisted of a 4-layer, 2100 Å thick medium including a 300 Å TbFeCo layer enveloped by silicon nitride protective layers supported on a 1.2 mm thick × 135 mm (5.25 in.) diameter polycarbonate disk. Recording tracks had an approximate pitch of 1.6 μm separated by 800 Å deep peripheral grooves. Using a Buehler Isomet low-speed diamond saw, 1 mm wide and 20 mm long strips were cut out of the disk along the recording tracks.

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