User's Guide for the Commercial Modular Aero-Propulsion System Simulation (C-MAPSS)

TLDR

This user guide describes NASA’s C‑MAPSS, a transient simulation of a large commercial turbofan engine up to 90,000‑lb thrust with realistic engine control, providing a graphical environment for testing advanced algorithms. C‑MAPSS offers a GUI that enables point‑and‑click access to engine health, control, and parameters, runs user‑specified transient simulations, generates state‑space linear models at operating points, and incorporates atmospheric and power‑management models for altitudes up to 40,000 ft, Mach 0–0.90, and temperatures from –60 to 103 °F.

Abstract

This report is a Users Guide for the NASA-developed Commercial Modular Aero-Propulsion System Simulation (C-MAPSS) software, which is a transient simulation of a large commercial turbofan engine (up to 90,000-lb thrust) with a realistic engine control system. The software supports easy access to health, control, and engine parameters through a graphical user interface (GUI). C-MAPSS provides the user with a graphical turbofan engine simulation environment in which advanced algorithms can be implemented and tested. C-MAPSS can run user-specified transient simulations, and it can generate state-space linear models of the nonlinear engine model at an operating point. The code has a number of GUI screens that allow point-and-click operation, and have editable fields for user-specified input. The software includes an atmospheric model which allows simulation of engine operation at altitudes from sea level to 40,000 ft, Mach numbers from 0 to 0.90, and ambient temperatures from -60 to 103 F. The package also includes a power-management system that allows the engine to be operated over a wide range of thrust levels throughout the full range of flight conditions.