This companion to Brown's Spacecraft Mission Design emphasizes the fundamentals of spacecraft propulsion design from the systems engineering viewpoint, including subsystems such as propellants, pressurization, and thrust vector control. Vehicle launch propulsion and a general history of rocket propulsion are included, but the main focus is on spacecraft propulsion and all the equipment required to generate thrust. AIAA's PRO propulsion design software is included to allow readers to perform hands-on, real-life computations, and to enhance the book's value as a self-teaching tool.