The Predesign Phase of the Second-Generation Comprehensive Helicopter Analysis System.
Final rept. 8 Sep 77-22 May 78.
COMPUTER SCIENCES CORP SILVER SPRING MD SYSTEM SCIENCES DIV
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This report summarizes the results of the Predesign Phase work for the Second-Generation Comprehensive Helicopter Analysis System. The report includes an executive summary, summarizes a conceptual design for the System, describes the Systems capability provided in the First Level Release and Second Level Release, discusses how the System would be used, presents a summary of the plans for development of the System, and presents discussions of risk considerations. The objectives and life cycle of the System are presented in terms of the six life-cycle phases planning, predesign, development, validation, maintenance, and user applications. Predesign Phase objectives and results are discussed. An overview of the System design is provided for the engineering manager, the engineering user, and the programmer. Four major design characteristics that the System must possess for it to be universally accepted by the helicopter analysis community are discussed user orientation, efficiency, transportability, and extendability. The mathematical basis for the System is presented in terms of the types of problems to be solved by the System, the finite element approach, the coupling of components, aerodynamic effects, and numerical analysis considerations. The Systems software architecture is presented hierarchically.