OVERVIEW Orbital ATK (formerly ATK) was under contract to develop a prototype lightweight aircraft radar structure, manufactured entirely from advanced composite materials. ATA Engineering, Inc., (ATA) provided key analysis support for a fast-approaching critical design review (CDR) by performing a variety of advanced structural analyses required to validate the design. Presentation materials and a final detailed stress report were provided to support the CDR. A highly detailed solid element model of a complex region of the structure was created to provide greater insight into the load distribution in the area and verify the design at that location. TASKS PERFORMED & KEY OUTCOMES h Calculated modes of vibration for a detailed model of the radar structure combined with Nastran DMIG

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