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An electromagnetic transducer for the production of shock waves in air Cowie, Eric Gordon
Abstract
The recent development of gas turbines, high speed aircraft, and similar machines, has made the study of shock waves of practical importance. This report concerns an electromagnetic method of producing repeated shock waves in air. The most simple shock wave generator, from a mathematical viewpoint, consists of a piston which starts from rest and moves with constant velocity into a tube containing the air. An attempt has been made here to approximate such piston motion by means of the forces acting on a conductor placed in a pulsed magnetic field. Although no shook waves have been produced, an electrical circuit has been developed to provide current pulses of the high amplitude necessary for such a device. A prototype transducer also has been constructed and tested. The report is primarily a description of this circuit. Basically, the pulse generator consists of two ignitrons, the first of which is in series with the transducer field coil and a high current source. The second ignitron is connected in such a manner that, when it is fired, it causes the extinction of the first. In this way, current pulses are passed through the field coil.
Item Metadata
Title |
An electromagnetic transducer for the production of shock waves in air
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1951
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Description |
The recent development of gas turbines, high speed aircraft, and similar machines, has made the study of shock waves of practical importance. This report concerns an electromagnetic method of producing repeated shock waves in air. The most simple shock wave generator, from a mathematical viewpoint, consists of a piston which starts from rest and moves with constant velocity into a tube containing the air.
An attempt has been made here to approximate such piston motion by means of the forces acting on a conductor placed in a pulsed magnetic field. Although no shook waves have been produced, an electrical circuit has been developed to provide current pulses of the high amplitude necessary for such a device. A prototype transducer also has been constructed and tested. The report is primarily a description of this circuit.
Basically, the pulse generator consists of two ignitrons, the first of which is in series with the transducer field coil and a high current source. The second ignitron is connected in such a manner that, when it is fired, it causes the extinction of the first. In this way, current pulses are passed through the field coil.
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Genre | |
Type | |
Language |
eng
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Date Available |
2012-03-26
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0103245
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.