Accession Number : ADA307185

Title :   Study of Advanced Structural Concepts for Fuselage.

Descriptive Note : Final rept.,

Corporate Author : BOEING VERTOL CO PHILADELPHIA PA

Personal Author(s) : Swatton, Sidney C.

PDF Url : ADA307185

Report Date : OCT 1973

Pagination or Media Count : 200

Abstract : This report presents the results of a study conducted to develop advanced structural concepts and the application of fiber-reinforced composite materials for the Cobra AH-lG helicopter tail section. This study comprised the following tasks: (1) analysis of existing AH-1G metal tail section to determine areas having highest potential structural improvement, (2) development and preliminary design studies of various advanced structural concepts and selection of three concepts for preliminary design trade-off study, (3) determination of parameters affecting cost effectiveness and performance of composite fuselage structure, (4) sensitivity analysis for reducing tail-section life-cycle costs, and (5) development of a math model for life-cycle costs and performance of composite fuselage, and utilization of model to recommend the optimum design. The following structural concepts were selected for preliminary design study: (1) monocoque sandwich clamshell, (2) thin sandwich shell with longerons and frames, and (3) integrally molded skin/stringer clamshell. The study results recommend the monocoque sandwich clamshell as the optimum design concept.

Descriptors :   *COMPOSITE STRUCTURES, *FUSELAGES, MATHEMATICAL MODELS, FIBERGLASS, OPTIMIZATION, COST EFFECTIVENESS, STRUCTURAL PROPERTIES, TAIL ASSEMBLIES, FIBER REINFORCED COMPOSITES, SHELLS(STRUCTURAL FORMS), HELICOPTERS, LIFE CYCLE COSTS, THINNESS, TRADE OFF ANALYSIS, MOLDINGS, UTILIZATION, SANDWICH CONSTRUCTION, BOOMS(EQUIPMENT), FIBER REINFORCEMENT.

Subject Categories : Aircraft
      Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE