3 edition of Spacecraft charging by magnetospheric plasmas found in the catalog.
by American Institute of Aeronautics and Astronautics
Written in English
|The Physical Object|
|Number of Pages||291|
Space charging effects are caused by interactions between spacecraft materials and the space plasma environment. Rapid discharge of charge buildup on spacecraft may disrupt or damage power, navigation, communications, and other instrumentation. The chapter describes the different regimes for spacecraft charging and possible breakdown situations. Space (IPELS), Maui, Hawaii, June , ], this is an "interdisciplinary" review article which does not only focus on whistler phenomena in space plasmas. The latter has been thoroughly done in classical books [Hel- liwell, ], long review articles [Al'pert, ], and an abundance of topical reviews [Helliwell, ; Sazhin et.
1 Origin of Magnetospheric Plasma.- 1 Introduction.- 2 Atmospheric Source of Magnetospheric Plasma.- 3 Temperature of the Atmospheric Plasma.- 4 Transport and Heating Effects of Photoelectrons.- 5 Plasma from Jupiter's Satellite Io.- 6 Entry of Solar-Wind Plasma into the Plasma . The spacecraft emits electrons and becomes positively charged by as much as 40 to 50 electron-volts (40 to 50 eV). The ions scientists want to observe also are positively charged, but at a lower voltage than the spacecraft. As an added challenge, the plasma density drops rapidly as it moves from Earth, making measurements even more difficult.
Even though space plasmas usually maintain quasi-neutrality to within less than about 1 part per million, there can still be substantial currents, convection, plasma flows, plasma waves and shocks and other plasma effects that interconnect plasmas over vast expanse as demonstrated by direct measurements of solar system space plasmas. well. Limiting the charge storing material or charging capacity is a useful method for reducing the internal charging threat. This can be accomplished by providing a bleed path so that all plasma-caused charges can equalize throughout the spacecraft or by having only small quantities of charge-storing materials. Coupling.
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Spacecraft charging by magnetospheric plasma is a newly discovered space hazard that can virtually destroy spacecraft in Earth orbit if they are not properly designed.
This volume is a collection of the manuscripts presented at a symposium on "Spacecraft Charging by Magnetospheric Plasmas," held in Washington, DC on Jsubsequently. Spacecraft charging by magnetospheric plasmas: technical papers selected from the AIAA/AGU Symposium on Spacecraft Charging by Magnetospheric Plasmas, Junesubsequently revised for this volume / edited by Alan Rosen American Institute of Aeronautics and Astronautics New York Australian/Harvard Citation.
A potentially catastrophic environmental phenomenon was recently discovered; large discharges and arcs on spacecraft. This phenomenon, induced by magnetospheric substorm events, was probably responsible for numerous spacecraft malfunctions and at least one spacecraft failure.
More often, however, the electromagnetic interference resulting from the arc is induced into various spacecraft Cited by: Space Sciences and Space Physics.
Ionosphere; Magnetospheric Physics; While for double‐Maxwellian plasma, in which charging determination becomes more complicated, there is not an analogous threshold condition developed so far. the spacecraft charging can be triggered when the weighted average of the total averaged yields of secondary Cited by: 3.
Margaret Galland Kivelson, Fran Bagenal, in Encyclopedia of the Solar System (Second Edition), Sources of Magnetospheric Plasmas. Magnetospheres contain considerable amounts of plasma, electrically charged particles in equal proportions of positive charge on ions and negative charge on electrons, from various sources.
The main source of plasma in the solar system is the Sun. Abstract. This paper gives an overview of electrostatic charging which occurs on spacecraft in different plasma environments.
Particular emphasis is given to differential charging between sunlit and shadowed insulated surfaces, a phenomenon which is often observed in the geostationary orbit. The adverse environmental effects, such as the effect of the radiation belts on electronics, and spacecraft charging from the magnetospheric plasma, means that designers need to understand interactive phenomena to be able to effectively design spacecraft.
This has led to the new discipline of spacecraft-environment interactions. Space plasmas are assumed neutral. Although the plasma den sities may luctuate, their time scales (inverse of plasma frequencies) are much faster than spacecraft potential variations.
Spacecraft charging takes a longer time than the ambient plasma luctuations because it takes time to ill up capacitances. In the spacecraft charging.
Surface Charging. Surface charging is created from low-energy plasma and photoelectric currents (see Fig. The midnight to dawn sector is a favored region for surface charging-induced anomalies. Typically, differential charging has occurred after geomagnetic substorms, which result in the injection of keV electrons into the magnetosphere.
The adverse environmental effects, such as the effect of the radiation belts on electronics, and spacecraft charging from the magnetospheric plasma, means that designers need to understand interactive phenomena to be able to effectively design spacecraft.
This has led to the new discipline of spacecraft-environment interactions. Get this from a library. Spacecraft charging by magnetospheric plasmas: technical papers selected from the AIAA/AGU Symposium on Spacecraft Charging by Magnetospheric Plasmas, Junesubsequently revised for this volume.
[Alan Rosen; American Institute of Aeronautics and Astronautics.; American Geophysical Union.;]. A light‐weight, low‐power, plasma analyzer is described that can be used for measuring the plasma environments of spacecraft with constrained resources. A unique system using a single electrostatic analyzer coupled to a single array of channel electron multipliers allows measurement of the three‐dimensional energy per charge distributions of both ions and electrons over E/q ranges from.
Abstract: Summary form only given. Charging of spacecraft by magnetospheric plasma can produce discharging, which is one possible cause of anomalous operation.
On communications satellites in geosynchronous orbit, the discharge-induced anomalies divide into two categories: those possibly caused by surface charging, in medium-energy plasma clouds in the midnight-to-dawn sector, and those. According to the demands of the current waveforms, the pulsed power supply system can be categorized into three types: (1) the fast power supplies with the requirements of the lowest current (I tp) at the typical time (T tp) as the waveform demonstrated in Fig.
2(a) without special requirements of the rising time (T R), including the PF power supplies, the TF power supplies, the CK power. Fundamentals of Spacecraft Charging: Spacecraft Interactions with Space Plasmas - Kindle edition by Lai, Shu T.
Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Fundamentals of Spacecraft Charging: Spacecraft Interactions with Space cturer: Princeton University Press.
The magnetospheric plasmas show diverse spatial scales, from a Debye length of ~15 cm in the dense cold plasmasphere to the 1 × 10 8 cm gyroradii of MeV protons at geosynchronous orbit to a system size of greater than 1 × 10 11 cm. Download: Download high-res image (KB) Download: Download full-size image; Fig.
A density-temperature. Abstract. Space weather is a term that refers to the dynamic, highly variable conditions in the geospace environment. This includes conditions on the sun, in the interplanetary medium, and in the magnetosphere-ionosphere-thermosphere system.
An improved specification of the plasma environment has been developed for use in modeling spacecraft charging. It was developed by statistically analyzing a large part of the LANL Magnetospheric.
Space Plasma Physics of O+ ions, coming out of the the first ion mass-spectrometer was sent into the central magnetosphere on ESA’s GEOS-1 spacecraft by the Bern group inthey could conclude that the ionosphere is a source of sim.
1 Introduction. Spacecraft surface charging is a serious concern for satellites near geosynchronous orbit. Spacecraft anomalies have been linked to spacecraft surface charging events, particularly in the postmidnight sector where there are increased electron fluxes [e.g., Rosen, ; Grard et al., ].Spacecraft charging not only affects plasma measurements but also the operations of.
Recommended Citation. Sojka, J. J., and R. W. Schunk, Magnetospheric control of the bulk ionospheric plasma, Proceedings of the AGARD/NATO Symposium on, “The Aerospace Environment at High Altitudes and its Implications for Spacecraft Charging and Communications,” The Hague, The Netherlands, AGARD–CP–, –, The adverse environmental effects, such as the effect of the radiation belts on electronics, and spacecraft charging from the magnetospheric plasma, means that designers need to understand interactive phenomena to be able to effectively design spacecraft.
This has led to the new discipline of spacecraft-environment s: 2.Characterization of Magnetospheric Spacecraft Charging Environments Using the LANL Magnetospheric Plasma Analyzer Data Set V. A. Davis, M.J. Mandell, and M.F.
Thomsen Science Applications International Corporation, San Diego, California October National Aeronautics and Space Administration Marshall Space Flight Center • MSFC, Alabama