OVERVIEW The Cygnus spacecraft is an unmanned resupply spacecraft. Vivace was contracted to design and build a unique vertical ground transporter for the Cygnus spacecraft. ATA Engineering, Inc., derived ground transportation environments and performed a comprehensive collection of modal, random vibration, nonlinear transient, and linear transient analyses to verify that the acceleration and displacement responses of Cygnus during transport to the launch vehicle integration facility did not exceed specified requirements. These analyses were critical in designing a suspension system that prevents transmission of high acceleration levels to the spacecraft and ensures proper clearance between the spacecraft and protective transporter doors during the most severe transportation conditi

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