Generic engine cycle model developed using NPSS. In 2013, the Consortium Members transferred management responsibility of the consortium to SwRI. Circa 2007, NASA GRC signed over control of maintenance and development for the code to an industrial consortium, organized and operated by the NPSS Consortium Members. In this way, engine manufacturers can share critical performance information in a manner that can be easily incorporated into a system model by the airframe builder. The original design intent for NPSS, which is still true today, was for the development of engine performance models that can be integrated into vehicle system models. The NPSS software was originally developed by engineers at NASA Glenn Research Center (GRC) in 1995. For a more comprehensive overview, see the About NPSS document. It can also be used for modeling refrigeration cycles, multi-phase heat transfer systems, vehicle emission analyses, or supercritical carbon dioxide (sCO 2) power cycles. It is an advanced object-oriented, non-linear thermodynamic modeling environment used by the aerospace industry for modeling turbomachinery, air-breathing propulsion systems, liquid rocket engines, engine control systems, and system model integration. NPSS ® stands for Numerical Propulsion System Simulation.
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