Availability

Availability in space and astronautical engineering refers to the ability of a system or component to be operational and accessible when needed. It is a measure of the reliability and maintainability of the system, as well as the effectiveness of the support infrastructure. Availability is critical in space missions, where the failure of a single component can have catastrophic consequences. It is achieved through careful design, testing, and maintenance of the system, as well as the provision of redundant components and backup systems. Availability is also affected by external factors such as environmental conditions and the availability of resources such as power and fuel.
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