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7. Glossary
Poussée; thrust
Force exerted by the acceleration and ejection of propellant, based on the conservation of momentum. Thrust is used to move a space vehicle.
Impulsion spécifique; specific impulse
Variation in the momentum of a satellite produced by a given mass of propellant. We show that the I sp is proportional to the ergol ejection velocity. This quantity defines the efficiency of the system in terms of ergol consumption.
Ergol; propellant
Fuel used in chemical propulsion; by extension, material used in electric propulsion to generate thrust.
Plasma; plasma
This is the fourth and most energetic state of matter. It is a dilute medium containing electrically charged particles...
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Glossary
Bibliography
Website
SES, private operator of telecommunication satellites : https://www.ses.com
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