Design of Pressure Vessel Cascades for Electromagnetic Launchers

1989 ◽  
Vol 111 (3) ◽  
pp. 326-331
Author(s):  
E. P. Fahrenthold
Keyword(s):  
High Energy ◽  
Pressure Vessels ◽  
Pulsed Power ◽  
Power Supplies ◽  
High Energy Density ◽  
Electromagnetic Launchers ◽  
Electromagnetic Launcher ◽  
Very High Energy ◽  
Very High

The relatively recent development of very high-energy density pulsed power supplies has motivated a renewed interest in the structural design of electromagnetic launchers. Cascade design electromagnetic launcher pressure vessels offer convenient maintenance access to high wear rate components of the structure while satisfying an unusual combination of electromagnetic, strength, and preloading constraints imposed on the system designer. Analysis for design of such structures focuses on the accurate characterization of fluid-structure interaction under dynamic asymmetric loading.

scholarly journals Stress Analysis for Design of Electromagnetic Launchers

1988 ◽  
Vol 110 (3) ◽  
pp. 395-400 ◽  
Author(s):  
E. P. Fahrenthold ◽  
D. R. Peterson ◽  
J. H. Price ◽  
A. Y. Wu
Keyword(s):  
Structural Analysis ◽  
Stress Analysis ◽  
Pulsed Power ◽  
Power Supplies ◽  
High Current ◽  
Stress Concentrations ◽  
Electromagnetic Launchers ◽  
Electromagnetic Launcher ◽  
Order Of Magnitude ◽  
Very High

The recent development of very high current pulsed power supplies provides an opportunity for order of magnitude improvements in electromagnetic launcher performance. Consideration of design objectives and constraints suggests that a ceramic-steel construction offers significant advantages over conventional composite-steel railguns. Structural analysis of such a system focuses upon material specific stress concentrations produced by dynamic and asymmetric electromagnetic loads.

Applications of very high‐energy density electrostrictive ceramics for underwater projectors

1991 ◽  
Vol 89 (4B) ◽  
pp. 1858-1858 ◽  
Author(s):  
A. P. Ritter ◽  
S. M. Pilgrim ◽  
P. Kuhn ◽  
S. R. Winzer ◽  
J. Sewell
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Very High Energy ◽  
Very High

On the Surface Chemical Aspects of Very High Energy Density, Rechargeable Li–Sulfur Batteries

2009 ◽  
Vol 156 (8) ◽  
pp. A694 ◽  
Author(s):  
Doron Aurbach ◽  
Elad Pollak ◽  
Ran Elazari ◽  
Gregory Salitra ◽  
C. Scordilis Kelley ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Surface Chemical ◽  
Very High Energy ◽  
Very High

Evaluation of High Power Experimental SiC SGTO Devices for Pulsed Power Applications

2012 ◽  
Vol 717-720 ◽  
pp. 1183-1186 ◽  
Author(s):  
Shelby Lacouture ◽  
Kevin Lawson ◽  
Stephen Bayne ◽  
Michael Giesslmann ◽  
Heather O'Brien ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
High Power ◽  
Real World ◽  
High Energy ◽  
Pulsed Power ◽  
Test Bed ◽  
Real World Application ◽  
Very High Energy ◽  
And Performance ◽  
Very High

The development of new semiconductor designs requires that extensive testing be completed in order to fully understand the device’s characteristics and performance capabilities. This paper describes the evaluation of experimental Silicon Carbide high power Super Gate Turn Off Thyristors (SiC SGTOs) in a unique test bed that is capable of stressing the devices with very high energy/power levels while at the same time mimicking a realistic, real world application for such devices.

Mechanical Design of Small-Bore Electromagnetic Launchers

1991 ◽  
Vol 113 (1) ◽  
pp. 92-101
Author(s):  
A. K. Thakore ◽  
E. P. Fahrenthold
Keyword(s):  
Mechanical Performance ◽  
Mechanical Design ◽  
Pressure Vessels ◽  
Pulsed Power ◽  
Power Supplies ◽  
Fatigue Reliability ◽  
Electromagnetic Launchers ◽  
Design Changes ◽  
Low Modulus ◽  
Fast Fracture

The development of special-purpose pressure vessels for small-bore, high-velocity electromagnetic launchers has characteristically employed low modulus composites and bolted steel frames. Such designs exhibit low structural stiffness, particularly at high operating currents. Although these designs can be modified to improve mechanical performance, numerical modeling results indicate that basic changes are needed to allow operation at the high bore pressures characteristic of newly developed pulsed power supplies. The indicated design changes introduce a requirement for fast fracture and fatigue reliability analysis of low tensile strength ceramic parts.

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