The Effect of Modified Control Limits on the Performance of a Generic Commercial Aircraft Engine

Jeffrey Csank, Ryan May, Ten-Huei Guo, Jonathan Litt
2011 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit   unpublished
This paper studies the effect of modifying the control limits of an aircraft engine to obtain additional performance. In an emergency situation, the ability to operate an engine above its normal operating limits and thereby gain additional performance may aid in the recovery of a distressed aircraft. However, the modification of an engine's limits is complex due to the risk of an engine failure. This paper focuses on the tradeoff between enhanced performance and risk of either incurring a
more » ... r incurring a mechanical engine failure or compromising engine operability. The ultimate goal is to increase the engine performance, without a large increase in risk of an engine failure, in order to increase the probability of recovering the distressed aircraft. The control limit modifications proposed are to extend the rotor speeds, temperatures, and pressures to allow more thrust to be produced by the engine, or to increase the rotor accelerations and allow the engine to follow a fast transient. These modifications do result in increased performance; however this study indicates that these modifications also lead to an increased risk of engine failure. 16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT UU 18. NUMBER OF PAGES 15 19a. NAME OF RESPONSIBLE PERSON STI Help Desk (email:help@sti.nasa.gov) a. REPORT U b. ABSTRACT U c. THIS PAGE U 19b. TELEPHONE NUMBER (include area code) 443-757-5802 Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std. Z39-18
doi:10.2514/6.2011-5972 fatcat:e3mdvt32djg77dz4xdjrs2so54