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Spacecraft Computer Systems
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Central Processing Unit (CPU)
The CPU acts as the brain of the spacecraft's computer system, executing commands and processing data.
Random Access Memory (RAM)
RAM provides the memory space for the CPU to store and access data quickly while performing tasks.
Data Storage
Used to store software, data, and mission information that can be preserved between power cycles.
Power Supply Unit (PSU)
Converts electrical power from the solar panels or batteries to the correct voltage and current to run the spacecraft systems.
Command and Data Handling (C&DH)
Handles the execution of commands to spacecraft subsystems and the collection and storage of operational data.
Communication Systems
Allow the spacecraft to communicate with ground stations, relaying commands, data, and status reports.
Thermal Control System (TCS)
Maintains the temperature of the computer systems within acceptable limits.
Attitude and Orbit Control Systems (AOCS)
Controls the spacecraft’s orientation and orbit path using various sensors and actuators.
Electrical Power System (EPS)
Manages the generation, storage, and distribution of electrical power from sources like solar panels and batteries.
Guidance, Navigation, and Control (GNC)
Responsible for determining the spacecraft's trajectory and position, and executing maneuvers to follow the desired path.
Flight Software
The software that provides the instructions for all on-board systems to operate and interact.
Telemetry Systems
Collect and transmit data on the health and performance of spacecraft systems to ground control.
Redundancy Management
Involves using backup systems and components to prevent mission failure in case of a malfunction.
Robotics Control Systems
Operate robotic arms or rovers, allowing for the manipulation of objects, collection of samples, or repairs.
On-Board Timekeeping Systems
Provide precise timing necessary for navigation, communication, and scientific experiments.
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