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The NPSS Vision

The Numerical Propulsion System Simulation …. A Vision for Virtual Engine Testing The 2006 ASME TURBO EXPO May 8 – 11, 2006 Barcelona, Spain Arun K. Sehra Director, Programs and Projects NASA Glenn Research Center. The NPSS Vision.

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The NPSS Vision

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  1. The Numerical Propulsion System Simulation….A Vision for Virtual Engine TestingThe 2006 ASME TURBO EXPO May 8 – 11, 2006 Barcelona, SpainArun K. Sehra Director, Programs and Projects NASA Glenn Research Center

  2. The NPSS Vision • An advanced engineering analysis environment that enables multi-fidelity, multi-disciplinary, full propulsion system simulations to be performed early in the design process…. …a virtual test cell that augments physical testing through the integration of validated physics-based modeling and information technologies…

  3. Major Issue in Meeting Future Aerospace Needs $ “..Without significant reductions in cost, the nation cannot afford a new military aircraft engine...” DDRE, IHPTET Steering Committee Meeting, 1996 • Projected benefits of a “virtual engine test cell”* • 50% reduction in tooling cost • 33% reduction in the average development engine cost • 30% reduction in the cost of fabricating, assembling and testing rig hardware • 36% reduction in the number of development engines • 60% reduction in total hardware cost • *Skira, Charles, A., “Will There Ever Be a Another New Military Aircraft Engine Development Program?”, AIAA 99-2660 • Notional development program (F100, F404, F414, F119) of 10 years, $1.5B, 14 test engines, 9 flight test engines and over 11,000 hours of engine tests.

  4. Component Libraries 3-D 0-D 1-D 3-D 3-D 1-D 0-D The NPSS Plug ‘n Play Environment Multi-fidelity Analysis 3-D 3-D Unsteady ~ ~ ~ ~ ~ ~ ~ 1-D NPSS V 1 – Baseline 0-D Model

  5. NPSS Roadmap to Support Advanced Propulsion System Design and Development The NPSS development is a partnership among NASA, US Industry, DoD, and AVETeC. NPSS Version 3 (AVETeC) 3-Dimensional, Unsteady, Aero/Thermal Full Propulsion System Simulation Along an Operating Line 2008 2007 2006 NPSS Version 1.6.3 Visual Based Syntax Layer, Test Integration, Nested Solvers… 2005 NPSS Version 2 (AVETeC) 3-Dimensional, Automated Aero/Thermal Full Engine Simulation NPSS Version 1.0 Virtual Engine Software Architecture Implemented for 0-Dimensional Aircraft Engine System 2004 2003 2002 2002 2001 2000

  6. NASA Demonstrates High Fidelity System Simulation using the GE90 APNASA APNASA & National Combustion Code

  7. Future Work • Extend from Engine to Full Propulsion System • Integrated Inlet/Fan • Serpentine Inlet with Flow Control • Full-Annulus Unsteady Fan Aeromechanical • Operability • Flutter • Forced Response • Integrated Thermal Management • Integrated Turbine/Exhaust Nozzle • Automate the GE 90 Simulation for Multiple Operating Points • Fully Integrate with NPSS V1.6 • Variable Bleed Flows • Variable Geometry • Improved Combustor/Turbine Integration • Cooling Flow • Heat Transfer • Reacting Flow

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