Results 271 to 280 of about 241,910 (308)
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Shuttle and MIR Special Environmental Effects and Hardware Cleanliness
High Performance Polymers, 2000The Evaluation of Space Environment and Effects on Materials (ESEM) experiments were developed, flown in-space on the STS-85 mission (August 1997), returned to Earth and analysed as one element of a collaboration between the National Space Development Agency (NASDA) of Japan and the National Aeronautics and Space Agency (NASA) of the United States ...
Gale A Harvey +2 more
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Thruster effects on the shuttle potential during TSS 1
Journal of Geophysical Research: Space Physics, 1996We have surveyed measurements taken by the Shuttle Potential and Return Electron Experiment (SPREE) in the shuttle payload bay during the satellite deployment phase of the Tethered Satellite System (TSS 1) mission. The shuttle was flying in an inverse airplane mode with its engine bells facing the ram direction to facilitate ion current collection ...
J. S. Machuzak +5 more
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Effects of amphetamine on shuttle-box performance of hamsters
Pharmacological Research Communications, 1970Summary Golden and albino hamsters showed poor avoidance responding in the shuttle-box. The administration of amphetamine in pretrained animals clearly improved performance. Results are discussed in relation to a possible disinhibitory effect of the drug and to a consequent increase in the vigilance level.
Mario Sansone, Paolo Renzi
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Cost Effectiveness Enhancement Initiative For The Space Shuttle Contract
INCOSE International Symposium, 1993AbstractThis paper will describe the partnership agreement with our NASA Customer and the process improvement techniques utilized to reduce the cost of performing integration tasks during a downturn of the business environment. It will cover a period of two years (FY91 & FY92).
Mina Akhavi +3 more
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Effects of low attenuation in a nanomechanical electron shuttle
Journal of Applied Physics, 2004We have measured the spectral current characteristics of a nanomechanical electron shuttle in a tuning-fork configuration. This particular design enhances the quality factor Q of the nanoelectromechanical system. Comparing the experimental results to a precedingly studied low-Q device, we find a substantially different current behavior, indicating an ...
Dominik V. Scheible +2 more
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Effect of speedup delay on shuttle bus schedule
Physica A: Statistical Mechanics and its Applications, 2016Abstract We study the bus schedule in the shuttle bus transportation system controlled by speedup. The bus schedule is closely related to the dynamic motion of the bus. The motion of a shuttle bus depends on the inflow rate of passengers and the delayed speedup control.
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Phase Noise Effects on Space Shuttle Communications Link Performance
IEEE Transactions on Communications, 1978The purpose of this paper is to present a theory which can be used to determine the effects which phase noise sources produce on the bit error probability performance of phase coherent links. The paper begins by presenting typical math models for phase noise sources known to exist in frequency generators.
W. Lindsey, null Kwei Tu
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Aerodynamic viscous effects on a new space shuttle vehicle
Journal of Spacecraft and Rockets, 1970Use of a sensitivity analysis of a performance index $ has shown that it may be difficult to determine aerodynamic coefficients accurately from experimental data because of the insensitivity of the solution to variations in these parameters. In addition, techniques which obtain coefficient values should be carefully evaluated to make certain that they ...
M.-I. KUSSOY +2 more
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Probing Polysulfide Shuttle Effect in the Li-S Battery
ECS Meeting Abstracts, 2016The lithium-sulfur battery is a strong contender among the beyond Li-ion chemistries due to its superior capacity and energy density as compared to the conventional Li-ion cells. However, experimental evidences suggest that even the first discharge capacity is appreciably lower than the theoretical limit.
Aashutosh Mistry +3 more
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Effects of surface roughness on two Shuttle Orbiter models
Journal of Aircraft, 1988The study addressed the effects of roughness on longitudinal and lateral stability and performance. In addition, asymmetric flow separation (or attachment) due to roughness, vehicle pitch rate, or large, rapid elevon motion was studied. Tests were made using 0.01875and 0.012-scale Shuttle Orbiter models over a Mach number range from 0.20 to 6.0 in wind
George M. Ware, Bernard Spencer
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