Investigating Turbofan Engine Internal Aerodynamics

965630

10/01/1996

Event
World Aviation Congress & Exposition
Authors Abstract
Content
The intent of a balanced engine design process is to satisfy all systems requirements including operability, performance and durability. Due to the complexity of the trade-off process of the various metrics it is possible that system improvements may be required after a turbofan engine enters production. Also, in the case of derivative engines, configured for increased performance, the flowpath aerodynamics may be challenged and may have to be examined to ensure there is no flow field anomaly. By incorporating special diagnostic aero instrumentation at the earliest opportunity any required operability improvement can be identified and corrective action taken. The paper first delineates the component matching challenges of twin spool mixed flow turbofan engines. Then it discusses investigation of various potential destabilizing influences. Examples are presented on quantifying transient fan stall margin, investigating internal flow quality, verifying absence of secondary flow reversals, and on the analysis of compressor interstage measurements for the identification of weak stages. The process described contributes to continuous product improvement.
Meta TagsDetails
DOI
https://doi.org/10.4271/965630
Pages
11
Citation
Khalid, S., "Investigating Turbofan Engine Internal Aerodynamics," SAE Technical Paper 965630, 1996, https://doi.org/10.4271/965630.
Additional Details
Publisher
Published
Oct 1, 1996
Product Code
965630
Content Type
Technical Paper
Language
English