Two studies are reported which Investigated the R&M and life‐cycle cost potential of advanced composite airframe structures for Army helicopters and developed concepts for repair of these structures in the Army field environment. Surveys were made of in‐service experience
with helicopter airframe structures. Reliability and maintainability factors in composite structures design were identified and defined. Laboratory testing was conducted to assess the damage resistance and field repairability of several composites in both monolithic and sandwich form. Detailed
R&M analyses were conducted for an advanced composite rear fuselage or the UH‐60A Black Hawk helicopter. Modular design was shown to be a feasible and highly cost‐effective approach to the repair of major structural damage.
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Document Type: Research Article
Sikorsky Aircraft Division, United Technologies Corporation, Stratford, Conn.
Publication date: 1981-10-01
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