Autoclave
Foam plays strategic role in rotorcraft structure
Eurocopter's Tiger helicopter incorporates an engine cowling stiffened with hat stringers made with ROHACELL XT polymethacrylimide (PMI) foam from Degussa Performance Plastics (Darmstadt, Germany). Previously, the approximately 1.5m/4.8-ft long and 0.8m/2.6-ft wide cowling was a solid laminate made with bismaleimide
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