In-space Propulsion

In-space propulsion refers to the set of techniques and technologies used for changing the velocity of spacecrafts and satellites once they are in space. This is a critical aspect of aerospace engineering as it enables spacecraft to maneuver, maintain orbits, or change their trajectory for interplanetary missions. The propulsion systems can be broadly classified into two categories: chemical propulsion and electric propulsion. Chemical propulsion systems use the reaction of chemical propellants to produce high-pressure and high-temperature gases, which are then expelled to generate thrust. This type of propulsion is commonly used for launch vehicles and for providing large thrusts over short durations. On the other hand, electric propulsion systems use electric energy to accelerate ions or plasma to high speeds, generating thrust. These systems are more fuel-efficient than chemical propulsion systems and are typically used for long-duration, deep-space missions. The choice of propulsion system depends on the mission requirements, including the mass of the spacecraft, the desired change in velocity (delta-v), and the mission duration.
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