1. Space propulsion

1.1 Tsiolkovsky equation

The movement of a vehicle in space is governed by the principle of conservation of momentum: acceleration results from the expulsion of a certain mass of matter. Applying this principle to a space vehicle leads to a generalized Newton's law that applies to a body subjected to a force F _ext and whose mass varies over time t :

F_{ext} + \dot{m} v_{e} = m \frac{d v}{d t}

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Bibliography

(1) - LEV (D.) et al - The technological and commercial expansion of electric propulsion in the past 24 years. - 35 ^th International Electric Propulsion Conference, IEPC-2017-242, Atlanta, Géorgie (2017).
(2) - SUTTON...