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Book Chapter
Spacecraft Systems
2016
Overview
There are five essential subsystems of any manned or unmanned spacecraft: propulsion, attitude control, power, environmental control, and telemetry. Propulsion, normally in the form of a rocket, is used to get the spacecraft off the launch pad and usually into an orbit. Telemetry is the communications subsystem between the spacecraft and mission control back on Earth. The three attitude control system (ACS) axes of satellites or spacecrafts are roll, pitch, and yaw, following the tradition of naval vessels. DC power is usually obtained either by photovoltaic cells (solar panels) or by small nuclear reactors known as radioisotope thermoelectric generators (RTGs). Microprocessors or subsystem instrument computers, depending on the complexity of the mission objectives, often support the central computer. Finally, all missions launched in the twenty‐first century have to have in place prior to launch a plan to deorbit the spacecraft safely at the end of its mission.
Publisher
John Wiley & Sons, Inc
Subject
ISBN
0470900431, 9780470900437
