P78 2 Scatha Preliminary Data Atlas

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P78-2 SCATHA Preliminary Data Atlas

E. G. Mullen
P78 2 SCATHA Preliminary Data Atlas Book PDF

Author : E. G. Mullen
Publisher : Unknown
Page : 46 pages
File Size : 47,8 Mb
Release : 1980
Category : Electron distribution
ISBN : UOM:39015095139716

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P78-2 SCATHA Preliminary Data Atlas by E. G. Mullen Pdf

A preliminary study of the 100 eV to approx. 1 MeV plasma environment encountered by the P78-2 Spacecraft Charging at High Altitudes (SCATHA) satellite during its initial operation period was conducted. Forty-four days of 10-min averages of the four moments of the electron and ion distribution functions calculated from the SC5 and SC9 energetic particle measurements were analyzed to determine occurrence frequency, local time variation, geomagnetic activity variation, and L-shell variation. The single and double Maxwellian parameters derived from the four moments were similarly analyzed. The interrelationships between the moments and derived parameters were computed and the results compared with the ATS-5 and ATS-6 atlas of Garrett et al (1980). Results of this analysis establish a baseline range for the SCATHA plasma environment.

SCATHA Environmental Atlas

E. G. Mullen
SCATHA Environmental Atlas Book PDF

Author : E. G. Mullen
Publisher : Unknown
Page : 170 pages
File Size : 45,8 Mb
Release : 1983
Category : Cosmic magnetic fields
ISBN : UOM:39015095142082

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SCATHA Environmental Atlas by E. G. Mullen Pdf

Technology for Large Space Systems

Anonim
Technology for Large Space Systems Book PDF

Author : Anonim
Publisher : Unknown
Page : 348 pages
File Size : 55,6 Mb
Release : 1980
Category : Large space structures (Astronautics)
ISBN : UOM:39015022344207

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Technology for Large Space Systems by Anonim Pdf

Real Time, Automatic Vehicle Potential Determination from ESA Measurements

Stanley L. Spiegel
Real Time Automatic Vehicle Potential Determination from ESA Measurements Book PDF

Author : Stanley L. Spiegel
Publisher : Unknown
Page : 24 pages
File Size : 51,9 Mb
Release : 1985
Category : Electrostatic analyzers
ISBN : UOM:39015095141175

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Real Time, Automatic Vehicle Potential Determination from ESA Measurements by Stanley L. Spiegel Pdf

The problem of spacecraft charging at high altitudes is an important one for Air Force applications; indeed a major effort (SCATHA Project) has been undertaken to understand this phenomenon. Quite simply, when a space vehicle at geosynchronous orbit, interacting with its plasma environment, acquires a high negative potential (of the order of 1/2 kV), it is possible that onboard instrumentation will be damaged by electrical discharge between differentially charged surfaces of the spacecraft. Thus it is important to activate a discharge mechanism as soon as a dangerously high potential develops. This means it is necessay to have a reliable method of determining the real time vehicle potential, or more specifically, distinguishing whether or not the potential has reached or exceeded critical levels. An algorithm incorporating an onboard microprocessor to analyze data obtained by the vehicle, and determine the extent of charging, is desirable. Computational simplicity and speed are important considerations in the design of such an algorithm. Examination of data from the P78-2 satellite has indicated that electrostatic analyzer (ESA) ion count data, could serve as input to an algorithm designed to fulfill the aforementioned objectives. The development and testing of one such algorithm, referred to as the count ration algorithm, are described.

SCATHA Atlas Data Base

E. G. Mullen,M. S. Gussenhoven
SCATHA Atlas Data Base Book PDF

Author : E. G. Mullen,M. S. Gussenhoven
Publisher : Unknown
Page : 290 pages
File Size : 46,9 Mb
Release : 1989
Category : Ions
ISBN : UOM:39015095331487

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SCATHA Atlas Data Base by E. G. Mullen,M. S. Gussenhoven Pdf

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.

Environmental Research Papers

Anonim
Environmental Research Papers Book PDF

Author : Anonim
Publisher : Unknown
Page : 412 pages
File Size : 51,5 Mb
Release : 2024-07-02
Category : Environmental geology
ISBN : CHI:62485629

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Environmental Research Papers by Anonim Pdf

SCATHA Atlas Data Base

E. G. Mullen
SCATHA Atlas Data Base Book PDF

Author : E. G. Mullen
Publisher : Unknown
Page : 0 pages
File Size : 42,8 Mb
Release : 1989
Category : Ions
ISBN : OCLC:1310067851

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SCATHA Atlas Data Base by E. G. Mullen Pdf

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.

NASA SP.

Anonim
NASA SP Book PDF

Author : Anonim
Publisher : Unknown
Page : 216 pages
File Size : 45,6 Mb
Release : 1982
Category : Aeronautics
ISBN : MINN:31951000586321G

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NASA SP. by Anonim Pdf

R & D Abstracts

Technology Reports Centre (Great Britain)
R D Abstracts Book PDF

Author : Technology Reports Centre (Great Britain)
Publisher : Unknown
Page : 624 pages
File Size : 44,9 Mb
Release : 1981
Category : Electronic
ISBN : STANFORD:36105014644467

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R & D Abstracts by Technology Reports Centre (Great Britain) Pdf

Data Bases and Data Base Systems Related to NASA's Aerospace Program

United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
Data Bases and Data Base Systems Related to NASA s Aerospace Program Book PDF

Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
Publisher : Unknown
Page : 184 pages
File Size : 45,9 Mb
Release : 1983
Category : Astronautics
ISBN : UIUC:30112087479272

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Data Bases and Data Base Systems Related to NASA's Aerospace Program by United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch Pdf

Government Reports Annual Index

Anonim
Government Reports Annual Index Book PDF

Author : Anonim
Publisher : Unknown
Page : 1192 pages
File Size : 40,8 Mb
Release : 1981
Category : Research
ISBN : UOM:39015034740160

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Government Reports Annual Index by Anonim Pdf

Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.