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A Review Of Scatha Spacecraft Charging At High Altitudes Satellite Results Charging And Discharging
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Book Synopsis A Review of SCATHA (Spacecraft Charging at High Altitudes) Satellite Results: Charging and Discharging by :
Download or read book A Review of SCATHA (Spacecraft Charging at High Altitudes) Satellite Results: Charging and Discharging written by and published by . This book was released on 1985 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the major results from the SCATHA (P78-2) satellite charging monitors and discharge detectors. The data show that surface charging, near synchronous altitudes, occurs preferentially in the midnight to local morning sectors, as expected. Evidence for bulk charging by energetic electrons is also observed. The material-charging data show that there was a marked increase in bulk conductivity of solar-illuminated Kapton with exposure time in the space vacuum. Teflon accumulated a permanent charge that slowly increased with time, and a quartz cloth material charged to higher than expected levels; some of these material effects have now been simulated in the laboratory. The statistical picture of the surface charging and the resultant discharges and noise generation show a close association with each other. Some of the discharges are ascribed to possible bulk charging. The signal amplitudes of the discharges are discussed and the temporal character of the discharge signal is shown for a few cases. The results represent a new baseline in our understanding of satellite charging and its effects. Keywords include: Arcs; Discharges; Material charging; and Satellite charging.
Book Synopsis SCATHA (Spacecraft Charging at High Altitudes) Environmental Atlas by :
Download or read book SCATHA (Spacecraft Charging at High Altitudes) Environmental Atlas written by and published by . This book was released on 1983 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the plasma environment encountered by the P78-2 Spacecraft Charging At High Altitudes (SCATHA) satellite during its operation between March 1979 and June 1980 was conducted. Statistical analyses of the 100 eV to 5 MeV particle populations at near-geosynchronous altitudes were performed. The analyses ordered the electron and ion density and flux data in KP, L-shell, and local time (LT). Comparisons of measured magnetic fields with the Olson-Pfitzer magnetic field model were also made. Results of the analyses are presented in a form useful for spacecraft design engineers.
Book Synopsis Spacecraft Charging: Observations and Relationship to Satellite Anomalies by :
Download or read book Spacecraft Charging: Observations and Relationship to Satellite Anomalies written by and published by . This book was released on 2001 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many studies have shown that satellite charging can cause anomalies on spacecraft. The SCATHA (Spacecraft Charging AT High Altitude) satellite was flown to determine the conditions and document the existence of satellite charging. It was instrumented to measure charging and to detect electrostatic discharges that occurred. Discharges were observed and could be characterized as either surface or internal charging related. More recently, observations were made of charging on a high-inclination Earth-orbiting (HBO) satellite. Both the HBO and SCATHA charging data show occurrence patterns that are consistent with the expected motions of substorm-injected plasma electrons. The SCATHA data was taken in the near-geosynchronous orbit and the HBO data was taken over a wide range of altitudes in a 630 inclination orbit. The SCATHA data showed that the internal discharge rates were related to the intensities of energetic electrons (Ee > 100 keV) and that, statistically, their occurrence peaked near local noon. These results can be understood in terms of the flux levels of electrons that can penetrate shielding. The HBO energetic particle data have been combined with CRRES, GOES, and GPS data to estimate some worst-case levels of internal charging fluxes.
Book Synopsis SCATHA (Spacecraft Charging at High Altitudes) Atlas Data Base by :
Download or read book SCATHA (Spacecraft Charging at High Altitudes) Atlas Data Base written by and published by . This book was released on 1989 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the plasma environment encountered by the P78-2 Spacecraft Charging At High Altitudes (SCATHA) satellite during its operation between March 1979 and June 1980 was conducted and reported in the SCATHA Environmental Atlas (AFGL-TR-84-0002). Summary plots of much of the data used in the Atlas are presented in two volumes. The first volume contains magnetic field data and spacecraft frame potential data. The second volume contains low and medium energy range electron and ion data, medium energy range ion composition data and high energy electron data. The data are presented in 24-hour plots. Space physics; Space environment; Spacecraft; Ions; Electrons.
Book Synopsis SCATHA (Spacecraft Charging at High Altitudes) Atlas Data Base by : E. G. Mullen
Download or read book SCATHA (Spacecraft Charging at High Altitudes) Atlas Data Base written by E. G. Mullen and published by . This book was released on 1989 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the plasma environment encountered by the P78-2 Spacecraft Charging At High Altitudes (SCATHA) satellite during its operation between March 1979 and June 1980 was conducted and reported in the SCATHA Environmental Atlas (AFGL-TR-83-0002). Summary plots of much of the data used in the Atlas are presented in two volumes. The first volume contains magnetic field data and spacecraft frame potential data. The second volume contains low and medium energy range electron and ion data, medium energy range ion composition data and high energy electron data. The data are presented in 24-hour plots. Space physics, Space environment, SCATHA, Spacecraft charging, Magnetic fields, Geosynchronous orbit. (jes).
Book Synopsis Spacecraft Charging Results from the SCATHA Satellite by : Harry C. Koons
Download or read book Spacecraft Charging Results from the SCATHA Satellite written by Harry C. Koons and published by . This book was released on 1981 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements made by surface potential monitors, contamination monitors, and electromagnetic interference monitors have successfully recorded the characteristics of satellite charging by the space environment. Differential potentials of several kilovolts have been measured between dielectric materials samples and space vehicle ground following the injection of energetic electrons around the vehicle. During some of these charging events, discharges have been detected. (Author).
Book Synopsis Potential Modulations on SCATHA (Spacecraft Charging at High Altitude) Spacecraft by : P. D. Craven
Download or read book Potential Modulations on SCATHA (Spacecraft Charging at High Altitude) Spacecraft written by P. D. Craven and published by . This book was released on 1986 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A small (1 volt) modulation of the spacecraft potential is observed on the SCATHA satellite through its effects on four instruments, two particle detectors and two field detectors. We show that there is a strong causal link between the modulation of the potential at this 1 volt level and a nonuniform distribution of the photoemissive properties of the conducting material on the surface of the satellite. Keywords: Charging; Thermal Plasma; Satellite Potential.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technology for Large Space Systems by :
Download or read book Technology for Large Space Systems written by and published by . This book was released on 1988 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technology for Large Space Systems by :
Download or read book Technology for Large Space Systems written by and published by . This book was released on 1987 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP. written by and published by . This book was released on 1991 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guide to Mitigating Spacecraft Charging Effects by : Henry B. Garrett
Download or read book Guide to Mitigating Spacecraft Charging Effects written by Henry B. Garrett and published by John Wiley & Sons. This book was released on 2012-04-20 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive guide to the modern body of spacecraft charging knowledge—from first principles for the beginner to intermediate and advanced concepts The only book to blend the theoretical and practical aspects of spacecraft charging, Guide to Mitigating Spacecraft Charging Effects defines the environment that not only creates the aurora, but which also can have significant effects on spacecraft, such as disruption of science measurements and solar arrays from electrostatic discharge (ESD). It describes in detail the physics of the interaction phenomenon as well as how to construct spacecraft to enhance their survivability in the harsh environment of space. Combining the authors' extensive experience in spacecraft charging—and in their provision of design support to NASA, JPL, the commercial satellite market, and numerous other projects—this incredible book offers both a robust physics background and practical advice for neophytes in the field and experienced plasma physicists and spacecraft engineers. In addition to containing numerous equations, graphs, tables, references, and illustrations, Guide to Mitigating Spacecraft Charging Effects covers: Solar cell technology, especially higher voltage arrays, and the new design approaches that are appropriate for them Information about the space plasma environment New analytic computer codes to analyze spacecraft charging Spacecraft anomalies and failures which emphasized designs that are of greater importance than others
Book Synopsis Failures and Anomalies Attributed to Spacecraft Charging by : R. D. Leach
Download or read book Failures and Anomalies Attributed to Spacecraft Charging written by R. D. Leach and published by . This book was released on 1995 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Space Weather Study Using Multipoint Techniques by : L.-H. Lyu
Download or read book Space Weather Study Using Multipoint Techniques written by L.-H. Lyu and published by Elsevier. This book was released on 2002-05-08 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic storms may cause damage to satellites, radiation hazard to astronauts, disruption of radio communications, and interruption of ground electric power lines. Space weather prediction becomes an important issue to be addressed in the twenty-first century. International Solar Terrestrial Program (ISTP) employs five satellites to probe the solar wind and magnetosphere, providing valuable information for space weather prediction. The Asia-Pacific region is becoming one of the economic centers in the world. The continuous drive for scientific and technological progress in parallel is evidenced by the establishment of many space research organizations in many countries of this area. In Taiwan, the National Space Program Office (NSPO) established her third satellite program -- COSMIC (Constellation Obsering Systems for Meteorology, Ionosphere and Climate), which is a science experiment to demonstrate the utility of atmospheric radio limb soundings from a constellation of six low-earth orbiting satellites in operational weather prediction, space weather monitoring, and climate monitoring and research.In order to provide a forum to discuss the many new results in this rapid-moving field and to forge international collaborations, a three-day COSPAR Colloquium on "Space Weather Study Using Multipoint Techniques" was held. This colloquium have provided a forum for experts from the international community to present new results on the timely topic "space weather".
Download or read book NASA Technical Paper written by and published by . This book was released on 1983 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spacecraft/plasma Interactions and Their Influence on Field and Particle Measurements by : A. Pedersen
Download or read book Spacecraft/plasma Interactions and Their Influence on Field and Particle Measurements written by A. Pedersen and published by . This book was released on 1983 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
