Premature failures of secondary aircraft structures such as control surfaces, access panels, and doors account for most of the structural repair and replacement costs of all types of military aircraft. These failures affect aircraft readiness and mission success while simultaneously escalating ownership (or life cycle) costs. Recent emphasis by the DOD and Air Force requires managers of future weapon systesm to ensue that reliability features are engineered into their systems from the earliest design phase. These directives rate operational availability equivalent with operational performance. Therefore, it is imperative that the causes of these premature failures be addressed. This paper outlines the flight environments that can cause durability problems and discusses why damping must be incorporated due to these environments. The application of damping to secondary structures is demonstrated by two components that have been redesigned and remanufactured using improved structural designs, materials, and manufacturing methods to achieve improved durability. The durability, cost, and weight of the redesigned components are compared to the baseline components. These comparisons demonstrate the ability to increase the durability of structures by incorporating damping without significant increases in cost or weight.
Demonstration of damped structure for increased supportability and reliability
Vorfuehrung einer gedaempften Struktur fuer gesteigerte Tragfaehigkeit und Zuverlaessigkeit
1987
7 Seiten, 11 Bilder, 3 Tabellen, 7 Quellen
Conference paper
English
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