X-38 Crew Return Vehicle 3D model

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The X-38 Crew Return Vehicle was a joint NASA-ESA effort as part of the International Space Station program to produce a lifeboat for the station. It was to remain semi-permanently berthed at ISS, only leaving either during an evacuation or occasional vehicle swaps, and would have the capability to evacuate the entire 6-person crew. Being a spaceplane, it also offered lower g-loading than Soyuz, important to reduce risk to potentially ill or injured crewmembers.