Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722938819
Category :
Languages : en
Pages : 102
Book Description
An investigation conducted on the electrical interference induced by the operation of a hollow-cathode plasma contractor in a ground-based facility is described. The types of electrical interference, or noise, which are important to Space Station Freedom designers are classified as either conducted or radiated emissions. The procedures required to perform conducted and radiated emission measurements on a plasma contactor are examined. The experimental data obtained are typically examined in the frequency domain (i.e. amplitudes of the noise fluctuations versus frequency). Results presented indicate the conducted emissions, which are the current fluctuations from the contactor into the space station wiring, are affected by operating parameters such as expellant flow rate and discharge current. The radiated emissions, which are the electromagnetic waves induced and emitted by the contactor, appear to be influenced by the contactor emission current. Other experimental results suggest possible sources which are responsible for the observed noise. For example, the influence of the plasma environment downstream from the contactor on noise emission levels is described. In addition, a brief discussion is given on the correlation between conducted and radiated emissions and the mechanisms through which both are influenced by the plasma downstream of the contactor. Buchholtz, Brett W. and Wilbur, Paul J. Unspecified Center CONTACTORS; ELECTROMAGNETIC COMPATIBILITY; ELECTROMAGNETIC INTERFERENCE; GROUND TESTS; PLASMAS (PHYSICS); VACUUM TESTS; ELECTROMAGNETIC RADIATION; EMISSION; NOISE INTENSITY; SPACE STATION FREEDOM...
An Investigation of Conducted and Radiated Emissions from a Hollow-Cathode Plasma Contactor
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722938819
Category :
Languages : en
Pages : 102
Book Description
An investigation conducted on the electrical interference induced by the operation of a hollow-cathode plasma contractor in a ground-based facility is described. The types of electrical interference, or noise, which are important to Space Station Freedom designers are classified as either conducted or radiated emissions. The procedures required to perform conducted and radiated emission measurements on a plasma contactor are examined. The experimental data obtained are typically examined in the frequency domain (i.e. amplitudes of the noise fluctuations versus frequency). Results presented indicate the conducted emissions, which are the current fluctuations from the contactor into the space station wiring, are affected by operating parameters such as expellant flow rate and discharge current. The radiated emissions, which are the electromagnetic waves induced and emitted by the contactor, appear to be influenced by the contactor emission current. Other experimental results suggest possible sources which are responsible for the observed noise. For example, the influence of the plasma environment downstream from the contactor on noise emission levels is described. In addition, a brief discussion is given on the correlation between conducted and radiated emissions and the mechanisms through which both are influenced by the plasma downstream of the contactor. Buchholtz, Brett W. and Wilbur, Paul J. Unspecified Center CONTACTORS; ELECTROMAGNETIC COMPATIBILITY; ELECTROMAGNETIC INTERFERENCE; GROUND TESTS; PLASMAS (PHYSICS); VACUUM TESTS; ELECTROMAGNETIC RADIATION; EMISSION; NOISE INTENSITY; SPACE STATION FREEDOM...
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722938819
Category :
Languages : en
Pages : 102
Book Description
An investigation conducted on the electrical interference induced by the operation of a hollow-cathode plasma contractor in a ground-based facility is described. The types of electrical interference, or noise, which are important to Space Station Freedom designers are classified as either conducted or radiated emissions. The procedures required to perform conducted and radiated emission measurements on a plasma contactor are examined. The experimental data obtained are typically examined in the frequency domain (i.e. amplitudes of the noise fluctuations versus frequency). Results presented indicate the conducted emissions, which are the current fluctuations from the contactor into the space station wiring, are affected by operating parameters such as expellant flow rate and discharge current. The radiated emissions, which are the electromagnetic waves induced and emitted by the contactor, appear to be influenced by the contactor emission current. Other experimental results suggest possible sources which are responsible for the observed noise. For example, the influence of the plasma environment downstream from the contactor on noise emission levels is described. In addition, a brief discussion is given on the correlation between conducted and radiated emissions and the mechanisms through which both are influenced by the plasma downstream of the contactor. Buchholtz, Brett W. and Wilbur, Paul J. Unspecified Center CONTACTORS; ELECTROMAGNETIC COMPATIBILITY; ELECTROMAGNETIC INTERFERENCE; GROUND TESTS; PLASMAS (PHYSICS); VACUUM TESTS; ELECTROMAGNETIC RADIATION; EMISSION; NOISE INTENSITY; SPACE STATION FREEDOM...
An Investigation of Conducted and Radiated Emissions from a Hollow-cathode Plasma Contactor
Author: Brett W. Buchholtz
Publisher:
ISBN:
Category : Electric contactors
Languages : en
Pages : 104
Book Description
Publisher:
ISBN:
Category : Electric contactors
Languages : en
Pages : 104
Book Description
An Experimental Investigation of Conducted and Radiated Emissions from a Hollow-cathode Plasma Contactor
Author: Brett W. Buchholtz
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 400
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 400
Book Description
30th AIAA/ASME/SAE/ASEE Joint Propulsion Conference
Author:
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 638
Book Description
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 638
Book Description
Monthly Catalogue, United States Public Documents
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1592
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1592
Book Description
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
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Large Space Structures & Systems in the Space Station Era
Author:
Publisher:
ISBN:
Category : Large space structures (Astronautics)
Languages : en
Pages : 700
Book Description
Publisher:
ISBN:
Category : Large space structures (Astronautics)
Languages : en
Pages : 700
Book Description
Measurement of Noise Produced by a Plasma Contactor Operating in Ground Based Facilities
Author: John Steven Snyder
Publisher:
ISBN:
Category : Electric contactors
Languages : en
Pages : 88
Book Description
Publisher:
ISBN:
Category : Electric contactors
Languages : en
Pages : 88
Book Description
Government reports annual index
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 1362
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 1362
Book Description