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MPD THRUSTER [3 records]

Record 1 2004-05-04

English

Subject field(s)
  • Missiles and Rockets
  • Launchers (Astronautics)
CONT

In Electro-Static thrusters, the propellant is ionized and the resulting ions are accelerated through an electric potential. Common examples include Hall effect and Kaufmann type thrusters. Electro-Magnetic thrusters utilize electric and magnetic body forces to accelerate ions. The most common type of electromagnetic thruster is the magnetoplasmadynamic thruster, or MPD.

French

Domaine(s)
  • Missiles et roquettes
  • Lanceurs (Astronautique)

Spanish

Save record 1

Record 2 2004-05-04

English

Subject field(s)
  • Missiles and Rockets
  • Launchers (Astronautics)
CONT

In Electro-Static thrusters, the propellant is ionized and the resulting ions are accelerated through an electric potential. Common examples include Hall effect and Kaufmann type thrusters. Electro-Magnetic thrusters utilize electric and magnetic body forces to accelerate ions. The most common type of electromagnetic thruster is the magnetoplasmadynamic thruster, or MPD.

PHR

High-power electromagnetic thruster.

French

Domaine(s)
  • Missiles et roquettes
  • Lanceurs (Astronautique)
CONT

[...] dans le propulseur électromagnétique, le projectile (un morceau de résine isolante) porte sur sa face arrière de minces feuilles de cuivre, qui fondent rapidement et se vaporisent lorsque elles sont traversées par un courant de très forte intensité ; on est alors en présence d'un plasma (gaz ionisé conducteur, localement neutre). La température de ce plasma est suffisamment élevée pour que tous les atomes de cuivre soient ionisés [...]

Spanish

Save record 2

Record 3 2004-05-03

English

Subject field(s)
  • Launchers (Astronautics)
CONT

Magnetoplasmadynamic (MPD) thrusters pass a large current radially outwards through a neutral plasma, from a central cathode to an annular anode. The radial current induces an azimuthal, circular magnetic field. The Lorentz body force acting on ions moving in the discharge current accelerates the plasma along the axis of the electrode structure. MPD thrusters operate at high power levels, kilowatts to megawatts, and provide high thrust with moderate specific impulse. A variant of this design uses an externally applied magnetic field to enable operation at lower power levels. MPD thrusters have been tested in the laboratory and have flown on test and demonstration missions. MPD thrusters are an insufficiently mature technology and consume too much power to be considered as candidates to provide primary propulsion of future out of Earth orbit missions and were not considered for SMART-1.

French

Domaine(s)
  • Lanceurs (Astronautique)

Spanish

Save record 3

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