1517. Weight Aspects of the Advanced Composite Airframe Program (ACAP)


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W H Marr: 1517. Weight Aspects of the Advanced Composite Airframe Program (ACAP). 1983.



The Advanced Composite Airframe Program (ACAP) represents one part of many new technology
applications which will be incorporated in the U.S. Army helicopters of the 1990’s. The
objective of the program is to demonstrate that significant weight and cost savings can be
achieved by maximum use of composites in airframe structure. The background and goals of
the ACAP program are presented.
The Sikorsky ACAP aircraft is a utility helicopter with a gross weight of 8470 lb married
to the existing proven dynamic system of the Sikorsky CommercialS-76 helicopter. It
incorporates all the U.S. Army survivability requirements while demonstrating that the U.S.
Army goals of 17% cost and 22% weight reduction can be achieved. Some of the more pertinent
weight problems are discussed.


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