Field Emission Electric Propulsion Articles on aviation - Aerospace Engineering
airports worldwide
Other aviation articles
Airport photos - free!
Aircraft photos - free!
Spacecraft pics - free!
Airports worldwide
Advertise for free!
Field Emission Electric Propulsion

By Wikipedia,
the free encyclopedia,

http://en.wikipedia.org/wiki/Field_Emission_Electric_Propulsion

Field Emission Electric Propulsion (FEEP) is an advanced electrostatic propulsion concept, a form of ion thruster, that uses liquid metal (usually either caesium or indium) as a propellant. A FEEP device consists of an emitter and an accelerator electrode. A potential difference on the order of 10 kV is applied between the two, which generates a strong electric field at the tip of the metal surface. The field extracts ions, which then are accelerated to high velocities, typically more than 100 km/s. A separate electron source is required to keep the spacecraft electrically neutral.


Due to its very low thrust (in the micronewton to millinewton range), FEEPs are primarily used for microradian, micronewton attitude control on spacecraft.

See also

External links





Text from Wikipedia is available under the Creative Commons Attribution/Share-Alike License; additional terms may apply.


Published - July 2009














christianity portal
directory of hotels worldwide
 
 

Copyright 2004-2017 © by Airports-Worldwide.com
Legal Disclaimer