NASA STI Repository (National Aeronautics and Space Administration) · 1979 · 94 citations · 0 references
Open access
EngineeringAerospace EngineeringMechanical EngineeringComputer-aided DesignInternal Combustion EnginesMechanical DesignDimensional AnalysisEngine DesignEngine PerformanceEngine Performance CharacteristicsGas Turbine EnginesWeight EstimationComponent Weight EstimationDetailed Design Weight EstimationEngine Performance ModelingMachinery Weight EstimationTurbine DesignTurbine PerformanceWeight Estimation During Detailed Design
A computerized method was developed to estimate weight and envelope dimensions of large and small gas turbine engines within + or - 5% to 10%. The method is based on correlations of component weight and design features of 29 data base engines. Rotating components were estimated by a preliminary design procedure which is sensitive to blade geometry, operating conditions, material properties, shaft speed, hub tip ratio, etc. The development and justification of the method selected, and the various methods of analysis are discussed.