Control Design for an Advanced Geared Turbofan Engine

This paper describes the design process for the control system of a next generation geared turbofan engine. This concept engine simulation is representative of a 30,000 lbf thrust class engine with two main spools, an ultra-high bypass ratio, and a variable area fan nozzle. Control system requirements constrain the non-linear engine model as it operates throughout its flight envelope of sea level to 40,000 ft and from 0 to 0.8 Mach number. The purpose of this paper is to review the engine control design process for an advanced turbofan engine configuration. The control architecture selected for this project was developed from literature and reflects a configuration that utilizes a proportional integral controller with sets of limiters that enable the engine to operate safely throughout its flight envelope. Simulation results show the overall system meets performance requirements without exceeding operational limits.

[1]  Ryan D. May,et al.  Control Design for a Generic Commercial Aircraft Engine , 2010 .

[2]  Gangbing Song,et al.  Design and control of a proof-of-concept variable-area exhaust nozzle using shape memory alloy actuators , 2004, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[3]  Michael D. Hathaway,et al.  NASA Fixed Wing Project Propulsion Research and Technology Development Activities to Reduce Thrust Specific Energy Consumption , 2013 .

[4]  Ulf Michel,et al.  The benefits of variable area fan nozzles on turbofan engines , 2011 .

[5]  Jonathan S. Litt,et al.  A Modular Aero-Propulsion System Simulation of a Large Commercial Aircraft Engine , 2008 .

[6]  Jeffrey T. Csank,et al.  Dynamic Analysis for a Geared Turbofan Engine with Variable Area Fan Nozzle , 2017 .

[7]  Michael T. Tong,et al.  Advanced Single-Aisle Transport Propulsion Design Options Revisited , 2013 .

[8]  Harold Brown,et al.  Control of jet engines , 1999 .

[9]  Jack D. Mattingly,et al.  Aircraft Engine Controls , 2009 .

[10]  Maciejowsk.  Multivariable Feedback Design , 1989 .

[11]  Link C Jaw,et al.  Aircraft Engine Controls: Design, System Analysis, and Health Monitoring , 2009 .

[12]  Thomas M. Lavelle,et al.  Toolbox for the Modeling and Analysis of Thermodynamic Systems (T-MATS) User's Guide , 2014 .

[13]  Declan G. Bates,et al.  Development and Validation of a Civil Aircraft Engine Simulation Model for Advanced Controller Design , 2008 .

[14]  Scott M. Jones,et al.  An N+3 Technology Level Reference Propulsion System , 2017 .

[15]  R. Kurz,et al.  Gas Turbine Performance , 2016 .