Space Briefing Book:
Components of a Space Launch System
Written by: Space Foundation Editorial Team
Reaching Earth orbit and beyond requires a careful combination of rocket engines, spacecraft, fuels and other systems. Here is a generic diagram of how some launch systems are designed, indicating: the Launch Abort System (LAS); the Payload Fairing; the Crew or Cargo Module; the Service Module; the Guidance System; and the rocket engines and propellants.
Note: There are other kinds of space launch systems in use, including air launch-to-orbit.