Fourier analysis of pressure oscillations in electrothermal launcher

Author

Voronov, A.M. ; Weise, Th G G H

Author_Institution

TZN Forschungs- und Entwicklungszentrum, Unterluess, Germany

Volume

2

fYear

1997

fDate

June 29 1997-July 2 1997

Firstpage

1128

Abstract

A detailed study of the physical processes of pulsed high-pressure, heavy-current arcs is appropriate in view of the technological progress in the application of electrothermal launchers. The results of a Fourier analysis of pressure in the electrothermal launcher are presented. The propelling gas was evolved from an organic substance. The spectral analysis of pressure curves showed the presence of radial acoustic waves in the propelling gas in the discharge chamber. These acoustic waves are revealed in a Fourier spectrum by some frequencies that shift in the measured time. The shift of the frequency is defined as given through the input of electrical energy into the discharge. The sound velocity in the propelling gas was determined according to the frequency of the radial acoustic waves.

Keywords

Fourier analysis; arcs (electric); electrothermal launchers; oscillations; power supplies to apparatus; pressure; pulse generators; pulsed power technology; spectral analysis; Fourier analysis; discharge chamber; electrothermal launcher; frequency shift; pressure curves; pressure oscillations; propelling gas; pulsed high-pressure heavy-current arcs; radial acoustic waves; sound velocity; spectral analysis; Acoustic waves; Electrodes; Electrothermal launching; Frequency; Guns; Hydrogen; Methanol; Propulsion; Time measurement; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Pulsed Power Conference, 1997. Digest of Technical Papers. 1997 11th IEEE International

Conference_Location

Baltimore, MA, USA

Print_ISBN

0-7803-4213-5

Type

conf

DOI

10.1109/PPC.1997.674550

Filename

674550