Definitive Contract NNC07CB61C

THE AVETEC RESEARCH TEAM PROPOSES TO DEVELOP A NEW TURBOMACHINERY DESIGN SYSTEM INCORPORATING MULTI-FIDELITY MODELS AND UTILIZING MULTI-DISCIPLINARY ANALYSIS AND OPTIMIZATION (MDAO) TO CREATE BOTH COMPONENT AND ENGINE SYSTEM OR MISSION OPTIMUS. TRADITIONALLY, INDIVIDUAL ENGINE COMPONENTS ARE DESIGNED SEPARATELY AND THEN MADE TO WORK TOGETHER THROUGH A TIME-CONSUMING, ITERATIVE PROCESS. THE PO=ROPOSED DESIGN SYSTEM WILL ALLOW ENGINE COMPONENT DESIGNERS TO OPTIMIZE HIGH-FIDELITY, 3D AERODYNAMIC AND STRUSTURAL COMPONENT DESIGNS BY COUPLING THEM TO LOWER-FIDELITY (0- AND 1D) ENGHINE SYSTEM DESIGN MODELS. THIS APPROACH WILL ALLOW DESIGNERS TO ESTIMATE COMPONENT EFFECTS ON THE ENGINE SYSTEM AND TAILOR THEIR DESIGNS SO THAT THEY BETTER NATCH THE OPERATION OF THE OTHER ENGINE COMPONENTS. THIS LEADS TO BETTER DESIGNS IN LESS TIME. THE PROPOSED SYSTENM WILL UTILIZE CAD SOFTWARE (T-AXI, BLADE GEOMETRY MODELER, CAPRI AND TGS) TO GENERATE CFD MESH FROM COLD-PART GEOMETRY. THREE-DIMENSIONAL CFD TURBOMACHINERY FLOW SOLVERS SUCH AS APNASA, TURBO AND SUMB, WILL BE USED TO SOLVE THE NAVIER-STOKES FLUID FLOW EQUATIONS ON THE MESH. FROM THOSE SOLUTIONS, THE PRESSURE-INDUCED DEFLECTIONS TO THE GEOMETRY ARE USED TO DETERMINE HOT-PART GEOMETRY. A HIGH-FIEDLITY OPTIMIZER IS USED TO IMPROVE COMPONENT DESIGN. FLOW SOLUTIONS ARE ALSO AVERAGED TO PROVIDE INPUT TO ONE-DIMENSIONAL COMPONENT MODELS, CONSTRUCTED IN NPSS, WHICH WILL BE USED WITH AN NPSS ENGINE CYCLE MODEL. THE ENGINE CYCLE IS RUN FOR THE ENGINE MISSION TO PROVIDE COMPONENT SENSITIVITIES AND RELATIVE WEIGHT, WHICH DEFINE THE OBJECTIVE FUNCTION THAT WILL DRIVE A SECOND OVERALL OPTIMIZER. ALTHOUGH SOME OF THE PIECES OF THE SYSTEM ARE READY OR NEARLY READY FOR USE, KEY ADDITIONS WILL BE MADE TO MAKE A SEAMLESS SYSTEM THAT ALSO ADDRESSES MANY ISSUES THAT ARE REQUIRED FOR A DESIGN SYSTEM.