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Current EHD thrusters are far less efficient than conventional engines. [15] An MIT researcher noted that ion thrusters have the potential to be far more efficient than conventional jet engines. [16] Unlike pure ion thruster rockets, the electrohydrodynamic principle does not apply in the vacuum of space. [17]
An ion thruster, ion drive, or ion engine is a form of electric propulsion used for spacecraft propulsion. An ion thruster creates a cloud of positive ions from a neutral gas by ionizing it to extract some electrons from its atoms. The ions are then accelerated using electricity to create thrust.
The aircraft is an example of an ionocraft, which is powered by an ionic wind generated through controlled electrical discharge. The fuselage contains a stack of 54 lithium-polymer batteries. [ 2 ] [ 8 ] With the aid of a power supply unit these deliver a minimum of 20,000 volts of electrical potential, producing enough corona discharge (EMF ...
This type of thruster can accelerate a large number of different liquid metals or alloys. The best performance (in terms of thrust efficiency and power-to-thrust ratio) can be obtained using high atomic weight alkali metals, such as cesium ( Cs , 133 amu) and rubidium ( Rb , 85.5 amu).
Electrospray Thruster: 1: SiEPro: Ionic liquid: The Aerospace Corporation: MIT: 1.5 U cubesat AeroCube 8D: 11 Nov 2016: Electrospray Thruster: 1: SiEPro: Ionic liquid: The Aerospace Corporation: MIT: 1.5 U cubesat AOBA-VELOX III: 9 Dec 2016: Pulsed plasma thruster: 1: PTFE: NTU KIT: NTU: 2U-Cubesat propulsion, satellite piggyback on HTV-6 ...
The gridded ion thruster is a common design for ion thrusters, a highly efficient low-thrust spacecraft propulsion method running on electrical power by using high-voltage grid electrodes to accelerate ions with electrostatic forces.
6 kW Hall thruster in operation at the NASA Jet Propulsion Laboratory. In spacecraft propulsion, a Hall-effect thruster (HET) is a type of ion thruster in which the propellant is accelerated by an electric field. Hall-effect thrusters (based on the discovery by Edwin Hall) are sometimes referred to as Hall thrusters or Hall-current thrusters.
This is the kind of thrust one would get from an ionic thruster. EHD calculation On the other hand, the EHD thrust is given by the well established equation F=id/k (Refer to Sigmond's scientific papers), k=ion mobility coefficient (in air=2E-4), d=air gap, i=current F= 3.33E-3*0.03/2E-4 = 0.5N, which is what one actually gets from an ionocraft ...