Field Emission Electric Propulsion

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.

ee also

* Spacecraft propulsion
* Magnetic sail
** Ion thruster
*** Electrostatic ion thruster
*** Hall effect thruster
*** Pulsed inductive thruster

External links

* [http://www.alta-space.com/index.php?page=feep FEEP - Field Emission Electric Propulsion] at Alta SpA
* [http://hpcc.engin.umich.edu/CFD/research/NGPD/ElectricPropulsion/feep/ FEEP thrusters] at the University of Michigan


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Electric propulsion — is a form of spacecraft propulsion used in outer space. This type of rocket like reaction engine utilize electric energy to obtain thrust from propellant carried with the vehicle. Unlike rocket engines these kinds of engines do not necessarily… …   Wikipedia

  • Electric vehicle — Sustainable energy Renewable energy …   Wikipedia

  • Spacecraft propulsion — A remote camera captures a close up view of a Space Shuttle Main Engine during a test firing at the John C. Stennis Space Center in Hancock County, Mississippi Spacecraft propulsion is any method used to accelerate spacecraft and artificial… …   Wikipedia

  • Nuclear electric rocket — In a nuclear electric rocket, nuclear thermal energy is changed into electrical energy that is used to power one of the electrical propulsion technologies. Technically the powerplant is nuclear, not the propulsion system, but the terminology is… …   Wikipedia

  • Nuclear pulse propulsion — An artist s conception of the Project Orion basic spacecraft, powered by nuclear pulse propulsion. Nuclear pulse propulsion (or External Pulsed Plasma Propulsion, as it is termed in one recent NASA document[1]) is a proposed method of spacecraft… …   Wikipedia

  • Electric car — An electric car is a type of alternative fuel car that utilizes electric motors and motor controllers instead of an internal combustion engine (ICE). The electric power is usually derived from battery packs in the vehicle.In general terms an… …   Wikipedia

  • Electric vehicle conversion — An electric vehicle conversion is the modification of a conventional internal combustion engine vehicle (ICEV) to electric propulsion, creating an all electric or plug in hybrid electric vehicle. Contents 1 Elements of a conversion 1.1 Solar… …   Wikipedia

  • Electric vehicle battery — Further information: Rechargeable electricity storage system For the starting, lighting and ignition system battery of an automobile, see Automotive battery. A Mitsubishi i MiEV having its batteries installed in Japan …   Wikipedia

  • Ion thruster — An ion thruster is a form of electric propulsion used for spacecraft propulsion that creates thrust by accelerating ions. Ion thrusters are characterized by how they accelerate the ions, using either electrostatic or electromagnetic force.… …   Wikipedia

  • Martin Tajmar — (* 2. Juli 1974 in Wien) ist ein Physiker und Professor für Antriebssysteme am KAIST in Daejeon, Südkorea, Universitätslektor am Institut für Leichtbau und Struktur Biomechanik der Technischen Universität Wien und Studiengangsleiter für Aerospace …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”