Open Access
National Aeronautics and Space Admin!stration
Thomas A. Stuart,Roger J. King +1 more
- 01 Jan 1989
About: The article was published on 01 Jan 1989. and is currently open access.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
•Proceedings Article
LabVIEW visualization for inductive sensors used in shaping control of a segmented reflector test bed
Alok Desai,Jessica Alvarenga,Harshit Tarsaria,Khosrow Rad,Helen Boussalis +4 more
- 29 Jan 2011
TL;DR: A LabVIEW based visualization subsystem that has been implemented and used for sensor calibration of the SPACE Testbed is described, which allows for linearity check for each sensor and provides a real-time means of system monitoring.
Measurement of Bone Stiffness as a Predictor of Bone Fracture Using Mechanical Vibration Technique
Tiffany Elicia Grant
- 01 Jan 2002
TL;DR: In this paper, the average cross-sectional bending stiffness of a long bone is used as a direct indicator of osteoporotic extent and fracture risk, using a parabolic steel tip attached to a shaker, resting on the ulna.
Linearization of a nonlinear geometric system model for robust controller design
Eric Diaz,Cheyenne Balboa,Juan Escobar,Zarah Jane Espano,Khosrow Rad,Helen Boussalis +5 more
- 25 Jun 2013
TL;DR: The segmented space telescope testbed at the Structures, Propulsion, And Controls Engineering (SPACE) NASA University Research Center (URC) of Excellence at California State University, Los Angeles, utilizes a segmented primary mirror and a novel motorized laser platform for simulating the testbed's intended target and demonstrating the test bed's pointing accuracy.
Effects of Free Molecular Heating on the Space Shuttle Active Thermal Control System
Peter L. McCloud,Craig A. Wobick +1 more
- 07 Jan 2008
TL;DR: In this paper, the effects of Free Molecular Heating (FMH) on the Space Shuttle radiators were investigated and the current Orbiter radiator heat flux models were adapted to incorporate FMH in addition to solar, earth infrared and albedo sources.
Characterization and Evaluation of Lunar Regolith and Simulants
William M. Cross,Gloria Murphy +1 more
- 01 Jan 2010
TL;DR: The samurai-type sword design projects have been greatly helped by incorporating systems engineering design principles into the MME design curriculum, resulting in the overall design process being 4-5 months ahead of 2oo8-og.
References
Modern DC-to-DC switchmode power converter circuits
Rudolf P. Severns,Gordon Ed Bloom +1 more
- 01 Jan 1985
TL;DR: In this article, the authors discuss the need for power sources of higher performance, smaller volume, and lighter weight in order to achieve compatibility with the shrinking size of all forms of communication and data handling systems, and particularly with the portable battery-operated equipment in everything from horne appliances and handtools to mobile communication equipment.
509
High-Frequency Resonant Transistor DC-DC Converters
TL;DR: In this paper, a low-power breadboard operating at 200-300 kHz has been built for switching power supplies and battery chargers, which can operate in either the step-up or step-down mode.
388
Steady-state analysis and design of the parallel resonant converter
TL;DR: In this article, five basic operating modes of the parallel resonant converter are analyzed and closed-form solutions for the two most important modes are found for the closed form solutions are given graphically so that the designer can use them without lengthy calculation or computer iteration.
192
An SCR Inverter with Good Regulation and Sine-Wave Output
TL;DR: The disadvantages of SCR inverters are poor regulation, very high component voltages when operating under heavy load, and an inability to operate with no load as mentioned in this paper, as well as the inability of operating under no load.
128