3 edition of Resistojet plume and induced environment analysis found in the catalog.
Resistojet plume and induced environment analysis
David J. Hoffman
by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, DC, Springfield, Va
Written in English
|Statement||David J. Hoffman.|
|Series||NASA technical memorandum -- 88957.|
|Contributions||United States. National Aeronautics and Space Administration.|
|The Physical Object|
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This paper documents thruster plume induced contamination measurements from the PIC (Plume Impingement Contamination) and SPIFEX (Shuttle Plume . The model predicts distinctively different turbidity plume behaviors under mean and oscillatory tidal currents, which highlights the significance of incorporating the effects of tidal oscillation to model dredging-induced turbidity plumes in the far field more realistically.
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Parametric study assessfng the induced environment for five cases representing typical space station resistojet geometries and operating conditions. This study uses the results of the plume analysis sectlon to predict two induced environment parameters, column density and back flow.
The analysis is followed by a discussion of the results. / /. Get this from a library. Resistojet plume and induced environment analysis. [David J Hoffman; United States. National Aeronautics and Space Administration.].
impacts, the induced environment produced by a resistojet propulsion module needs to be modeled analytically and, where possible, verified exper- imentally. Both tasks are difficult ones. A detailed numerical treatment of the plume expan- sion begins prior to the exit of the resistojet nozzle. Although computer codes to analyze the.
AIREX: Resistojet Plume and Induced Environment Analysis The source flow method developed by G.A. Simons for calculating the far field plume density produced by high thrust rocket nozzles is modified and applied to low thrust resistojet nozzles with.
The modified Simons analysis is then used to calculate the plume structure and two contamination parameters, number column density and back flow, for five nozzle geometries representative of Space Station resistojetsAuthor: David J. Hoffman. Measurements of mass flux and flow angle were taken throughout the forward flow region of the exhaust of a liquid-fed water resistojet using a quartz crystal microbalance (QCM).
The resistojet operated at a mass flow rate of g/s with a power input of Watts. American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA Cited by: However, plume-induced subduction initiation 5,6,7,8,9 could have started the first subduction zone without the help of plate tectonics.
Here, we Cited by: This paper presents data analysis from the Brooklyn Traffic Real-Time Ambient Pollutant Penetration and Environmental Dispersion (B-TRAPPED) study to assess the transport of ultrafine particulate matter (PM) across urban intersections.
Experiments were performed in a. Environmental pollution is tangled with the unsustainable anthropogenic activities, resulting in substantial public health problems.
(Khan, ). McGeehin et al, () reported that U.S. population from infectious diseases to diseases such as cancer, birth defects, and asthma, many of which may be associated with environmental by: A lofting plume will generally not reach the ground surface. Fumigation causes the high pollutant concentration plume reaching the ground level along the length of the plume and is caused by a super-adiabatic lapse rate be4neath an inversion.
The super-adiabatic lapse rate at the ground level occurs due to the solar heating. Analysis of X Linear Aerospike Plume Induced Base-Heating Environment During Power-Pack Out [Wang, Ten-See, Nasa Technical Reports Server (Ntrs), Et Al] on *FREE* shipping on qualifying offers.
Analysis of X Linear Aerospike Plume Induced Base-Heating Environment During Power-Pack OutAuthor: Nasa. The publication is a dependable reference for scientists and readers interested in turbulent buoyant jets and plumes. Show less The Science & Applications of Heat and Mass Transfer: Reports, Reviews, & Computer Programs, Volume 6: Turbulent Buoyant Jets and Plumes focuses on the formation, properties, characteristics, and reactions of turbulent.
visual impacts would be required. Such detailed plume visual impact analysis is called Level-3 analysis and is carried aut by more sophistica ted plume visibility models such as PLUVUE II.
Figure 1 shows a logic flow diagram of the three levels of plume visual impact screening and analysis. Therefore a laboratory benchmark rectangular breech-fed pulsed plasma thruster (PPT) was designed, developed and successfully tested in a bell-type vacuum chamber at mbar for the first time.
Analysis of lead and sulfur in environmental samples by double pulse laser induced breakdown spectroscopy has become to play an important role in environmental analysis. In this technique, a high powered laser pulse is focused onto a sample to create plasma, which results from vaporization and atomization of a small amount of target Cited by: Environmental problems and analysis Land use change with environmental feedback is some of the interesting and important aspect of research work in India.
On the work of A.J. Verhagen, A. Rovers, C.A. () from the book of Global Environmental Change and Land Use Dolman. This book highlights one of the most important aspects of global File Size: 88KB.
Response of a river plume during an upwelling favorable wind event The Ekman dynamics and shear-induced mixing cause the plume to evolve to a quasi-steady uniform thickness, which can be estimated by During an upwelling favorable wind event the plume be- comes wider as the seaward front is advected offshore.
In orderCited by: A three-dimensional, unstructured-grid, pressure-based, reacting flow, computational fluid dynamics and heat transfer methodology was employed to study the base-heating environment of a lunar lander demonstrator, during terrestrial ground testing. IN studies of moths flying upwind to a pheromone source, attention has focused on the influence on flight orientation of the composition1,2 and concentration3,4 of Cited by: Estuarine plume Phytoplankton bloom Pearl River estuary CO 2 Biogeochemistry abstract We observed a phytoplankton bloom downstream of a large estuarine plume induced by heavy precipitation during a cruise conducted in the Pearl River estuary and the northern South China Sea in May–June Pulsed laser ablation (PLA) methods are finding ever-growing use in fields as diverse as medicine , environmental analysis [2, 3], and many areas of manufacturing ranging from thin film deposition and surface coating to the fabrication of patterned nanomaterials .Despite manifold applications, however, several aspects of the underlying physics remain incompletely understood [5, 6], and the Cited by: 7.