NDLI: Actively Controlling the Muzzle Velocity of a Railgun

Content Provider	IEEE Xplore Digital Library
Author	Siaenen, T. Schneider, M. Zacharias, P. Loffler, M.J.
Copyright Year	1973
Abstract	The muzzle velocity variation is a parameter of many kinds of accelerators. Actively reducing this value is achieved by observing the motion of the accelerated object during launch and by adjusting the propelling force to achieve the desired velocity. Applying this method to classical gas guns requires a controllable energy source. Experiments with gas-driven accelerators achieve limited success due to severe energy transfer and timing problems. The railgun overcomes these limitations as it uses an electromagnetic field as a propellant that is able to transport power with almost the velocity of light. Using multiple independent capacitor modules, feeding the railgun enables a flexible release of energy. Results are presented from experimental investigations on the control of the acceleration in an augmented railgun. The observation of the accelerated object's motion is performed using a light barrier system. The output signal is read by a micro-controller that decides at which points in time the capacitor modules will be switched on based on a control algorithm. It is shown that the muzzle velocity variation can be reduced by shifting the switch-on points in time of the capacitor modules.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	1514
Ending Page	1519
Page Count	6
File Size	805279
File Format	PDF
ISSN	00933813
Volume Number	41
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Projectiles Capacitors Acceleration Inductance Railguns Velocity measurement Equations pulse power systems Electromagnetic launching electromagnetic launching power supplies
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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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
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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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