electromagnetic propulsion
DESCRIPTION
Electromagnetic Propulsion. Brice Cassenti University of Connecticut. Electromagentic Propulsion. Electric Rocket Propulsion Solar and Laser Sailing. Electromagnetic Forces. Particle with Charge Mass Velocity Electric Field Intensity Magnetic Flux Density Equation of motion. - PowerPoint PPT PresentationTRANSCRIPT
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Electromagnetic Propulsion
Brice CassentiUniversity of Connecticut
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Electromagentic Propulsion
• Electric Rocket Propulsion• Solar and Laser Sailing
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Electromagnetic Forces• Particle with – Charge– Mass– Velocity
• Electric Field Intensity• Magnetic Flux Density
• Equation of motion
q
E
B
mv
BvEqdtvdm
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Plasma Drift
B applied magnetic fieldE applied electric fieldj current due to Ev drift velocity
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Hall Effect in a Solid
http://arapaho.nsuok.edu/~bradfiel/advlab/Hall/hall-effect.pdf
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Current Flow in a Plasma
• In a neutral plasma– – ni , ne are the ion and electron number densities
• Current is
– is the conductivity
eeii vnvnqj
dtndj
dtjd
nqm
nqp
nqBjBvEj
e
e
e
e
e
ln
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Resistojet
Humble, et al
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Electron Bombardment Ion Thruster
Sutton
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Rail Acclerator
Sutton
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MPD Arcjet
Sutton
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Hall Accelerator
Sutton
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Solar and Laser Sails
• Momentum of light–
• Pressure due to reflection–
• Intensity of sun at earth– 1360 W/m2
cEP /
cIp /2
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Solar Sails
Google “Solar Sail images”
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Laser Sails
R.L. Forward
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Microwave Sail - Starwisp
R.L. Forward
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References• Davidson, R.C. and H. Qin, Physics of Intense Charged Particle Beams in High Energy
Physics, Imperial College Press, London and World Scientific Publishing Co., Pte. Ltd., Singapore, 2001.
• Davidson, R.C., Physics of Nonneutral Plasmas, Imperial College Press, London and World Scientific Publishing Co., Pte. Ltd., Singapore, 2001.
• Forward, R.L., Beamed Power Propulsion to the Stars, AAAS Symposium on Interstellar Communication and Travel, AAAS Annual Meeting, Philadelphia, 25-20 May 1986
• Hughes, W.F., and J.A. Brighton, Theory and Problems of Fluid Dynamics, Schaum’s Outline Series, McGraw-Hill Book Company, New York, 1967.
• Humble, R.W., G.N. Henry, and W.J. Larson, Space Propulsion Analysis and Design, The McGraw-Hill Publishing Companies, Inc., New York, 1995.
• Jeffrey, A., Magnetohydrodynamics, John Wiley & Sons, Inc., 1966.• Samaras, D.G., Theory of Ion Flow Dynamics, Dover Publishers, Inc., New York, 1962• Sutton, G. and O. Biblarz, Rocket Propulsion Elements, 7th edition, John Wiley &
Sons, Inc., New York, 2001.