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'GAIM' - Gas-addition, impedance-matched arc driverA conceptual view for a GAIM energy/driver system to maximize shock-tube performance through efficient interfacing of the energy source with the gas dynamics of the arc driver is presented. Electrical and arc-chamber requirements are evaluated utilizing two new computer codes. One code calculates the shock wave generated for a selected time rate and magnitude of arc-energy input; the other computes the values of external circuit elements required to produce the selected energy input, with the driver represented as the load element of the electrical discharge circuit. Results indicate that the energy-storage capability and the driver arrangement needed to produce the highest shock Mach number can be achieved by means of driver gas addition and by impedance matching (GAIM). Design criteria are presented for arc energy requirements necessary to produce given shock-wave speeds. Shock velocities as high as the 70 km/sec required for simulating Jovian entry now seem possible in shock-tube operation. Practical implementation of a GAIM system is discussed.
Document ID
19800053961
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Dannenberg, R. E.
(NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1980
Subject Category
Ground Support Systems And Facilities (Space)
Meeting Information
Meeting: Shock tubes and waves
Location: Jerusalem
Country: Israel
Start Date: July 16, 1979
End Date: July 19, 1979
Accession Number
80A38131
Distribution Limits
Public
Copyright
Other

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