What does the term 'propulsion' encompass in rocketry?

The term 'propulsion' in rocketry specifically refers to everything associated with the movement of the rocket. This includes various elements such as the rocket engines, fuel, and propulsion mechanisms that generate thrust. The propulsion system is critical because it determines how the rocket is able to lift off, travel through the atmosphere, and navigate through space.

This understanding focuses on the functional role that propulsion plays in ensuring that the rocket can move effectively. While other components, like the guidance system and structural design, are vital to the overall operation and performance of the rocket, they are not part of the propulsion system itself. Instead, they support the rocket's mission in different ways but do not directly create the force needed for movement. Therefore, emphasizing propulsion highlights its essential role in the dynamics of rocketry and space travel.