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Salient features of electrical propulsion.
Electric propulsion is a form of space craft propulsion used in outer space. This type
of reaction utilizes electric energy to obtain thrust from propellant carried with the
vehicle.
Types of electric propulsion :
The various technologies of electric propulsion are usually grouped in three types
based on the type of forces used to accelerate the ions of the plasma.
Electrostatic: If the acceleration is caused mainly by the coulomb forces the device is
considered electrostatic.
i. Electrothermal: In this type, electromagnetic fields are used to generate a plasma
to increase the heat of the bulk propellant. The thermal energy imparted to the
propellant gas is then converted into kinetic energy by a nozzle of either physical
material construction or by magnetic means.
ii. Electromagnetic: In this ions are accelerated either by the effect of an
electromagnetic fields where the electric field is not in the direction of the
acceleration.
Advantages of Electric Propulsion used in the battery electric vehicle that uses
chemical energy stored in rechargeable battery packs.
As Electric vehicle, it employs electric motors and motor controllers instead of
internal combustion engine
The concept of baterry electric vehicle is to charge batteries on board of vehicles
for propulsion using the electric grid.
The main advantages of battery electric vehicles are :
1. No pollutants are emitted directly by the vehicle potentially reducing urban pollution.
2. Gasoline is indirectly replaced by whatever is being used to generate domestic
electricity, reducing dependence on foreign commodities. The electrical energy
stored within the battery can be generated by any source, including renewable,
nuclear, natural gas, coal and petroleum
gregorymasila answered the question on February 22, 2018 at 16:57
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