Bolted joints are used at numerous locations in the rotors and carcass structure of modern aircraft turbine engines. This application makes the design criteria and process substantially different from that used for other types of machinery. Specifically, in addition to providing engine alignment and high-pressure gas sealing, aircraft engine structural joints can operate at high temperatures and may be required to survive very large applied loads which can result from structural failures within the engine, such as the loss of a fan blade. As engine bypass ratios have increased in order to improve specific fuel consumption, these so-called “Ultimate” loads increasingly dominate the design of bolted joints in aircraft engines. This paper deals with the sizing and design of both bolts and lever flanges to meet these demanding requirements. Novel empirical methods, derived from both component test results and correlated analysis have been developed to perform strength evaluation of both flanges and bolts. Discussion of analytical techniques in use includes application of the LS-DYNA™ code for modeling of high-speed blade impact events as related to bolted joint behavior.
Skip Nav Destination
Article navigation
April 2005
Technical Papers
Unique Challenges for Bolted Joint Design in High-Bypass Turbofan Engines
Robert P. Czachor
Robert P. Czachor
Chief Consulting Engineer, Structures, GE Aircraft Engines, One Neumann Way, Cincinnati, Ohio 45215
Search for other works by this author on:
Robert P. Czachor
Chief Consulting Engineer, Structures, GE Aircraft Engines, One Neumann Way, Cincinnati, Ohio 45215
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Atlanta, GA, June 16–19, 2003, Paper No. 2003-GT-38042. Manuscript received by IGTI, October 2002, final revision, March 2003. Associate Editor: H. R. Simmons.
J. Eng. Gas Turbines Power. Apr 2005, 127(2): 240-248 (9 pages)
Published Online: April 15, 2005
Article history
Received:
October 1, 2002
Revised:
March 1, 2003
Online:
April 15, 2005
Citation
Czachor, R. P. (April 15, 2005). "Unique Challenges for Bolted Joint Design in High-Bypass Turbofan Engines ." ASME. J. Eng. Gas Turbines Power. April 2005; 127(2): 240–248. https://doi.org/10.1115/1.1806453
Download citation file:
Get Email Alerts
Cited By
Image-based flashback detection in a hydrogen-fired gas turbine using a convolutional autoencoder
J. Eng. Gas Turbines Power
Fuel Thermal Management and Injector Part Design for LPBF Manufacturing
J. Eng. Gas Turbines Power
An investigation of a multi-injector, premix/micromix burner burning pure methane to pure hydrogen
J. Eng. Gas Turbines Power
Related Articles
A Review of Wave Rotor Technology and Its
Applications
J. Eng. Gas Turbines Power (October,2006)
Performance Enhancement of Microturbine Engines Topped With Wave Rotors
J. Eng. Gas Turbines Power (January,2006)
Assessment of Current Turbine Engine High Cycle Fatigue Test Methods
J. Eng. Gas Turbines Power (July,2003)
IN MEMORIAM : Professor Arthur H. Lefebvre (1923–2003)
J. Eng. Gas Turbines Power (April,2004)
Related Proceedings Papers
Related Chapters
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Subsection NF—Supports
Companion Guide to the ASME Boiler & Pressure Vessel Codes, Volume 1 Sixth Edition
Background InformatIon
Guidebook for the Design of ASME Section VIII Pressure Vessels