Air Methods Corporation, Englewood, CO, manufactures litter pans (platforms) used in the UH-60Q MEDEVAC (Medical Evacuation) variant of the UH- 60 Black Hawk interior that are machined aluminum pieces designed to support litter-borne patients. These platforms also serve as attachment points for the ambulatory patient seats. The original platforms were designed to meet civil crash requirements. However, with the pending introduction of the HH-60M, the platforms must meet stricter Army crash requirements, and the loads on the platforms themselves have increased. Air Methods Corporation requested that the National Center for Defense Manufacturing and Machining (NCDMM) review a proposed stiffener design and develop a manufacturing process capable of producing a complex stiffener geometry that will reduce the weight of the platform along with increasing its 'payload' capacity.


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