What Does PKM Stand For?

PKM stands for Perigee KickMotor

PKM, or Perigee Kick Motor, refers to a propulsion system used in spacecraft to perform maneuvers at their closest approach to a celestial body, known as perigee. This motor provides the necessary thrust to alter the spacecraft's trajectory, enabling it to enter a desired orbit or continue its mission trajectory. The PKM is crucial for optimizing fuel efficiency and ensuring accurate positioning during critical phases of space missions.