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There are a total of 8 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Demonstration of a 10-m Solar Sail System
Author(s): Murphy, David M.; Macy, Brian D.; Gaspar, James L.
Abstract: The NASA In-Space Propulsion (ISP) program has been sponsoring system design development and hardware demonstration activities of solar sail technology over the past 16 months. Efforts to validate by test a moderate-scale ...
NASA Center: Langley Research Center, Marshall Space Flight Center
Publication Year: 2004
Added to NTRS: 2008-06-02
Document ID: 20040068083; Report Number: AIAA Paper 2004-1576
Dynamic and Static Shape Test/Analysis Correlation of a 10 Meter Quadrant Solar Sail
Author(s): Taleghani, Barmac K.; Lively, Peter S.; Gaspar, James L.; Murphy, David M.; Trautt, Thomas A.
Abstract: This paper describes finite element analyses and correlation studies to predict deformations and vibration modes/frequencies of a 10-meter quadrant solar sail system. Thin film membranes and booms were analyzed at the ...
NASA Center: Langley Research Center
Publication Year: 2005
Added to NTRS: 2008-06-02
Document ID: 20050176374; Report Number: AIAA Paper 2005-2123
Development of Modal Test Techniques for Validation of a Solar Sail Design
Author(s): Gaspar, James L.; Mann, Troy; Behun, Vaughn; Wilkie, W. Keats; Pappa, Richard
Abstract: This paper focuses on the development of modal test techniques for validation of a solar sail gossamer space structure design. The major focus is on validating and comparing the capabilities of various excitation techniques ...
NASA Center: Langley Research Center
Publication Year: 2004
Added to NTRS: 2008-06-02
Document ID: 20040073458; Report Number: AIAA Paper 2004-1665
Laser Vibrometry Helps to Validate Gossamer Space Structures
Author(s): Gaspar, James L.
Abstract: NASA is pursuing the development of large ultra-lightweight structures, commonly referred to as gossamer space structures. These structures have large areas and small areal densities, which complicates ground testing ...
NASA Center: Langley Research Center
Publication Year: 2006
Added to NTRS: 2008-05-02
Document ID: 20080015855
Testing of a 10-meter Quadrant Solar Sail
Author(s): Gaspar, James L.; Mann, Troy; Behun, Vaughn; Macy, Brian; Barker, Peter; Murphy, David
Abstract: The purpose of this paper is to address the technical challenges and requirements of modal testing a solar sail system (Fig. 1). Specific objectives of this work are to investigate the effectiveness (i.e. accuracy, ...
NASA Center: Langley Research Center
Publication Year: 2006
Added to NTRS: 2008-04-07
Document ID: 20080013536
Structural Test and Analysis of a Hybrid Inflatable Antenna
Author(s): Gaspar, James L.; Mann, Troy; Sreekantamurthy, Tham; Behun, Vaughn
Abstract: NASA is developing ultra-lightweight structures technology for communication antennas for space missions. One of the research goals is to evaluate the structural characteristics of inflatable and rigidizable antennas through ...
NASA Center: Langley Research Center
Publication Year: 2007
Added to NTRS: 2007-07-24
Document ID: 20070022267; Report Number: AIAA Paper 2007-1832
Nonlinear Structural Analysis Methodology and Dynamics Scaling of Inflatable Parabolic Reflector Antenna Concepts
Author(s): Sreekantamurthy, Tham; Gaspar, James L.; Mann, Troy; Behun, Vaughn; Pearson, James C., Jr.; Scarborough, Stephen
Abstract: Ultra-light weight and ultra-thin membrane inflatable antenna concepts are fast evolving to become the state-of-the-art antenna concepts for deep-space applications. NASA Langley Research Center has been involved in the ...
NASA Center: Langley Research Center
Publication Year: 2007
Added to NTRS: 2007-07-17
Document ID: 20070021481; Report Number: AIAA 2007-1834
Membrane Vibration Studies Using a Scanning Laser Vibrometer
Author(s): Gaspar, James L.; Solter, Micah J.; Pappa, Richard S.
Abstract: This paper summarizes on-going experimental work at NASA Langley Research Center to measure the dynamics of a 1.016 m (40 in.) square polyimide film Kapton membrane. A fixed fully automated impact hammer and Polytec ...
NASA Center: Langley Research Center
Publication Year: 2001
Added to NTRS: 2005-08-25
Document ID: 20020034940; Report Number: L-18141, NAS 1.15:211427, NASA/TM-2002-211427
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