Geometrical Optimization of Parallel Mechanisms Based on Natural Frequency Evaluation: Application to a Spherical Mechanism for Future Space Applications

2009 ◽  
Vol 25 (1) ◽  
pp. 12-24 ◽  
Author(s):  
C. Menon ◽  
R. Vertechy ◽  
M.C. Markot ◽  
V. Parenti-Castelli
Keyword(s):  
Natural Frequency ◽  
Parallel Mechanisms ◽  
Space Applications ◽  
Geometrical Optimization ◽  
Future Space ◽  
Spherical Mechanism

Membrane Modular Structures With Inflatable Tubes and Connective Cables for Future Space Applications

2009 ◽  
Author(s):  
Nobuhisa Katsumata ◽  
Ryoko Fujii ◽  
M. C. Natori ◽  
Hiroshi Yamakawa
Keyword(s):  
Conceptual Models ◽  
Space Structure ◽  
Modular Structure ◽  
Membrane Structures ◽  
Large Space ◽  
Space Applications ◽  
Cable Networks ◽  
Large Space Structure ◽  
Future Space ◽  
Modular Structures

Spirally folded hexagonal membrane structures with inflatable tubes and connective cable networks are presented aiming to establish possible construction scenarios of future large space structure systems over hundreds meters scale and corresponding structures based on the hierarchical modular structure concept using deployable membrane modules. Laboratory scale hand-made conceptual models are manufactured, and their deployment experiments are carried out to show their applicability to the hierarchical modular structures systems.

Analysis and Test of a Proton Exchange Membrane Fuel Cell Oxidant System

2000 ◽  
Author(s):  
Arturo Vasquez ◽  
Donald E. Varanauski ◽  
Robert W. Clark
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Cell System ◽  
Proton Exchange ◽  
Published Data ◽  
Space Applications ◽  
Future Space ◽  
Water Separator ◽  
Component Models ◽  
Exchange Membrane

Abstract An effort is underway to develop a Proton Exchange Membrane (PEM) Fuel Cell system for future space applications. A breadboard system has been constructed and includes the following: reactant pressure regulators, ejector-based reactant pumps, a 4-kW fuel cell stack, and a passive, membrane-based oxygen / water separator. A computer model is being developed concurrently to analytically predict fluid flow in the oxidant reactant system. Preliminary data obtained from tests performed with the breadboard system, as well as other published data, has been used to validate the analytical component models. These components have been incorporated into an integrated oxidant fluid system model. Results obtained from both the performance tests and the analytical model are presented.

Demonstration of a fiber-coupled optical cryocooler: a step towards future space applications

2021 ◽  
Author(s):  
Rémi Vicente ◽  
Gilles Nogues ◽  
Laurent Del-Rey ◽  
Jérôme Debray ◽  
David Jegouso ◽  
...  
Keyword(s):  
Space Applications ◽  
Future Space

Evaluation of GAGG:Ce scintillators for future space applications

2018 ◽  
Vol 13 (02) ◽  
pp. P02023-P02023 ◽  
Author(s):  
M. Yoneyama ◽  
J. Kataoka ◽  
M. Arimoto ◽  
T. Masuda ◽  
M. Yoshino ◽  
...  
Keyword(s):  
Space Applications ◽  
Future Space

scholarly journals Potential of laser-induced ablation for future space applications

Space Policy ◽  
2012 ◽  
Vol 28 (3) ◽  
pp. 149-153 ◽  
Author(s):  
Alison Gibbings ◽  
Massimiliano Vasile ◽  
John-Mark Hopkins ◽  
David Burns ◽  
Ian Watson
Keyword(s):  
Space Applications ◽  
Future Space

Recommendations for Water Systems in Future Space Applications

2006 ◽  
Author(s):  
Laurie J. Peterson ◽  
Brienne Shkedi ◽  
Laura A. Shaw ◽  
John F. Lewis ◽  
Richard D. Morton
Keyword(s):  
Water Systems ◽  
Space Applications ◽  
Future Space
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