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Ion Beam Deflection (AKA Push-Me/Pull-You)The Ion Beam Deflection provides the following potential advantages over other asteroid deflection systems. Like the gravity tractor, it doesn't require despinning of the asteroid. Unlike the gravity tractor, it provides a significantly higher coupling force that is independent of the asteroid size. The concept could be tested as part of the baseline Asteroid Redirect Robotic Mission. The thrust and total impulse are entirely within the design of the SEP vehicle. The total impulse is potentially competitive with kinetic impactors and eliminates the need for a second rendezvous spacecraft.Gridded ion thrusters provide beam divergence angles of a few degrees enabling long stand-off distances from the asteroid. Mitigating control issues. Minimizing back-sputter contamination risks
Document ID
20150008178
Acquisition Source
Jet Propulsion Laboratory
Document Type
Presentation
External Source(s)
Authors
Brophy, John
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 15, 2015
Publication Date
October 1, 2013
Subject Category
Spacecraft Propulsion And Power
Meeting Information
Meeting: Asteroid Initiative Idea Synthesis Workshop
Location: Houston, TX
Country: United States
Start Date: November 20, 2013
End Date: November 22, 2013
Sponsors: Lunar and Planetary Inst., NASA Johnson Space Center
Distribution Limits
Public
Copyright
Other
Keywords
high-power, low-beam-divergence ion thruster (NEXIS)
electric thruster

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