Primary Structure
In space and astronautical engineering, the primary structure refers to the load-bearing structure of a spacecraft or launch vehicle. It is the backbone of the vehicle and is responsible for supporting all the other components, including the payload, propulsion system, and other subsystems. The primary structure must be designed to withstand the extreme conditions of launch and spaceflight, including high acceleration, vibration, and temperature changes. It must also be lightweight to minimize the launch costs and maximize the payload capacity. The materials used for the primary structure can vary depending on the mission requirements, but commonly used materials include aluminum, titanium, and composites. The design of the primary structure is a critical aspect of spacecraft and launch vehicle engineering, as any failure in the structure can lead to catastrophic consequences.
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