th  N&R Engineering has been intimately involved in the development and enhancements of NASA propulsion system simulations. We were part of the initial development team of C-MAPSS40k (Commercial Modular Aero-Propulsion System Simulation 40k), a simulation of a generic 40,000 pound thrust class high-bypass turbofan engine (Figure 1) and a FADEC-like control system, implemented in MATLAB/Simulink and C. We have also worked with NASA to upgrade the modeling capabilities of the engine simulation, implementing the effects of high angle-of-attack inlet flows, heat soakage, and different fuel types on predicted engine performance.

Services Provided:

  • Control System Design and Analysis
  • Mathematical Modeling of Aerospace Components and System Performance
  • Engineering Software Development


Litt, J.S., Chin, J.C., and Liu, Y., “Simulating the Use of Alternative Fuels in a Turbofan Engine,” NASA Technical Memorandum, NASA/TM-2013-216547.

Liu, Y., Claus, R.W., Litt, J.S., and Guo, T., “Simulating Effects of High Angle of Attack on Turbofan Engine Performance,” AIAA 51st Aerospace Sciences Meeting, Grapevine, Texas, 7-10 January 2013.

May, R.D., Csank, J., Lavelle, T.M., Litt, J.S., and Guo, T., “A High-Fidelity Simulation of a Generic Commercial Aircraft Engine and Controller,” 46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Nashville, Tennessee, 25-28 July 2010.

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