NDLI: Development of a flux compression power unit for millisecond ETC pulsed power applications

Content Provider	IEEE Xplore Digital Library
Author	Goldman, E.B. Davies, F. Bickford, K.J. Smith, E. Williams, P. Leone, M.
Copyright Year	1965
Abstract	A flux compression power unit (FCPU) is being developed to generate tailored millisecond current pulses for electrothermochemical (ETC) gun applications. A propellant mixture is used to accelerate a conducting piston into the magnetic field region within a helical coil. An armature integral to the piston makes sliding contact with the coil through compliant brushes and provides continuous current flow between the coil and a center rod which acts as a return current path. Interaction between the armature and the magnetic field decelerates the piston and transfers the piston's kinetic energy to the magnetic field. The initial current and energy in the helical coil (provided by a "seed" capacitor bank) are thereby multiplied and delivered to a resistive load. Repetitive operation may be obtained by using the compressed magnetic field to stop the piston at the end of the useful compression stroke and return it to the starting position. FCPU point of departure design parameters for a proof-of-principle experiment include: 120 mm bore diameter, 75 cm coil length, 80 turns/m helical winding, 15 kA seed current (7.2 kJ initial energy), 3.5 kg piston initially accelerated to 300 m/s. Simulations predict a FCPU current multiplication of 40/spl times/, 95 kJ delivered to a fixed resistance load, and the stopping of the piston. The simulations include current diffusion and flux trapping. Initial experiments using solid propellants to accelerate the piston are reported.
Sponsorship	IEEE Magnetics Society
Starting Page	340
Ending Page	345
Page Count	6
File Size	787410
File Format	PDF
ISSN	00189464
Volume Number	35
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pistons Coils Magnetic fields Acceleration Propulsion Power generation Pulse generation Pulse compression methods Electrothermal launching Brushes
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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