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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 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.
Such a thruster often generates the source plasma using radio frequency or microwave energy, using an external antenna. This fact, combined with the absence of hollow cathodes (which are sensitive to all but noble gases ), allows the possibility of using this thruster on a variety of propellants, from argon to carbon dioxide air mixtures to ...
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]
The NEXT thruster has demonstrated, in ground tests, a total impulse of 17 MN·s; which as of 2010 was the highest total impulse ever demonstrated by an ion thruster. [2] A beam extraction area 1.6 times that of NSTAR allows higher thruster input power while maintaining low voltages and ion current densities, thus maintaining thruster longevity.
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 dumbbell thruster exercise is a popular full-body movement trainers use to build strength, muscle, and power. Here's how to do it.
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 ...