Abstract
This paper analyzed the main fuel control system of the auxiliary power unit (APU), explored the starting process of the main fuel flow control system control law and control algorithm. Focus on analyzing the interpolation table that is involved in the controller of the starting process, restoring its physical meaning. The design method of the main fuel flow controller for the starting process of the APU is summarized. It’s a valuable reference for the future design of the control system of both aero-engine and auxiliary power unit.
Highlights
Auxiliary power unit (APU) is a set of independent small gas turbine power plant which is installed on the aircraft
The APU belongs to single rotor structure, mainly including two basic parts which is APU core engine and transmission gear box
The starting process fuel flow calculation used in the incremental change control mode, proportional coefficient and integral coefficient are changed with the APU compressor inlet air pressure and temperature, it is shown in formula 1. kp, ki are constant
Summary
Auxiliary power unit (APU) is a set of independent small gas turbine power plant which is installed on the aircraft. It is not depend on any energy from outside the machine, and mainly used for output electric power, shaft power and pressurized gas source, in order to meet modern aircraft the engine start, the air emergency, the cabin air conditioner and other auxiliary energy supply requirements. Based on a certain type of single rotor full authority digital electronic control system of auxiliary power unit, this type of APU’s structure and working principle are analyzed; the starting process of main fuel flow control law and control algorithm are studied; explored some parameters and interpolation table meaning, completed the main fuel control system design method of the APU starting process analysis and research work. Operating mode includes start mode, available mode, main engine start mode, loop control mode and stop mode
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
