Publications

Date of last update: December 18, 2003

Jürgen Broede, Hugo Pfoertner: Advanced Algorithms Design and Implementation in On-board Microprocessor Systems for Engine Life Usage Monitoring. 15th Symposium AIMS, Aachen 1989, reprint in MTU FOCUS 1/1991
Available for download.
H.Pfoertner, H.Streifinger: RB199 Engine Oil System Failure Diagnostics by Comparison of Measured and Calculated Oil Consumption Using the OLMOS On-Board Monitoring System. 16th Symposium AIMS, Muenchen 1991
Available for download (Size 1.6Mb).
G.Dhondt, W.Möhres: Modelling the Engine Temperature Distribution between Shut Down and Restart for Life Usage Monitoring. 16th Symposium AIMS, Muenchen 1991
Available for download (Size 604kb).
H.Pfoertner, C.Ross: Preparing Life Usage Monitoring for the Next Decade. 18th International Symposium AIMS, Stuttgart 1995
Available for download (Size 1.4Mb).
Jürgen Broede: Design and Service Experience of Engine Life Usage Monitoring Systems. 5th European Propulsion Forum, Pisa 1995
Available for download. View html version.
Jürgen Broede, Hugo Pfoertner: Incident Monitoring - General Requirements and First In-Service Experience. 5th European Propulsion Forum, Pisa 1995
Available for download (Size 1.3Mb).
F. Hörl, K.Richter: Monitoring the EJ200 Engine. 18th International Symposium AIMS, Stuttgart, 1995
Available for download.
J.Broede, H.Pfoertner: OLMOS in GAF MRCA Tornado - 10 Years of Experience with On-Board Life Usage Monitoring.
33rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Seattle 1997
Available from AIAA -- The American Institute of Aeronautics and Astronautics. The paper is also available for download. To protect AIAA's copyright you have to obtain a password from the authors to read the paper.

J.Broede, H.Pfoertner, K.Richter: The importance of testing for successful life usage monitoring systems. In: Proceedings of the 19th Symposium Aircraft Integrated Monitoring Systems (AIMS98), Garmisch-Partenkirchen, 1998, pp. 387-406
Available for download.
H.Pfoertner, S.Graf: Data conditioning methods for aero engine signals and their influence on the accuracy of fatigue life usage monitoring results. In: Proceedings of the 20th Symposium Aircraft Integrated Monitoring Systems (AIMS2000), Garmisch-Partenkirchen, 2000, pp. 157-176
Available for download.
Part of this work is based on research performed by Simone Graf (University of Passau) at MTU's mechanical engineering department within the context of her Masterís Thesis in Mathematics (in German).
Simone Graf: Filterung und Datenkompression von Flugdaten zur Unterstützung der Zustands- und Lebensdauerüberwachung von Triebwerken. Diplomarbeit im Fachgebiet Mathematik. Universität Passau, Fakultät für Mathematik und Informatik. Betreuer: Prof. Dr. Siegfried Graf. Passau, 2000. Available for download.
In November 2000 Hugo gave a lecture at the RTO Lecture Series 218bis on "Aging Engines, Avionics, Subsystems and Helicopters" in Sofia (Bulgaria). The title of the lecture was "Extension of the Usable Engine Life by Modelling and Monitoring". It is available for download from the RTO publications web site.
Here is the list of references.
H. Pfoertner, J.Broede: Statistical correlations for analysis and prediction of turbine engine component life usage. 37th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, Salt Lake City, Utah, 8-11 July 2001. AIAA 2001-3754, available from AIAA -- The American Institute of Aeronautics and Astronautics. The paper is also available for download. To protect AIAA's copyright you have to obtain a password from the authors to read the paper.
The following 4 papers were presented at the NATO/RTO AVT Symposium on Aging Mechanisms and Control. Part B - Monitoring and Management of Gas Turbine Fleets for Extended Life and Reduced Costs. Manchester, UK, 8-11 October 2001.
Jorge Moreno Barragán: Engine Vibration Monitoring and Diagnosis Based on On-Board Captured Data. Available for download. Contact the author.
Hugo Pfoertner: Long Term Operation and Maintenance of Engine Monitoring Systems - Recommendations Derived from 15 Years of OLMOS Use by the GAF. Available for download. Here is the list of references.
H. Summerer, F. Heitmeir, E. Fendt: Forecasting the Effects of Potential Aero Engine Modifications on Life Cycle Cost (LCC). Available for download (Presentation), (Paper). Contact the author.
Thomas Zoller: Advanced Engine Monitoring and Diagnosis Systems: Actual System for the EJ200 Engine of the EuroFighter 2000 Aircraft and Future Trends. Available for download. Contact the author.
Hugo Pfoertner: The Information Content of Turbine Engine Data - A Chance for Recording-Based Life Usage Monitoring. Paper No. 408 presented at the 2002 IEEE Aerospace Conference. March 9-16, 2002 Big Sky, MT
Preprint available for download. Viewgraphs.
J. A. Moreno Barragán: Investigations into engine transient response due to internal and external dynamic excitations. IFToMM Sixth International Conference on Rotor Dynamics. Sept 30 - Oct 3, 2002 Sydney, Australia. Available for download. Contact the author.
F. Grauer, D. Filipovic, H. Pfoertner: Application of MEMS in Turbomachinery Environment. Presented at NATO/RTO AVT - 099 Symposium on Novel and Emerging Vehicle and Vehicle Technology Concepts (Part A), Brussels, Belgium, April 2003
Available for download.
The following papers were written by employees of MTU's mechanical engineering department:
Broede, J. and M. Köhl Methods of Modern Lifing Concepts Implemented in On-Board Life Usage Monitoring Systems. RTO AVT Specialists' Meeting on "Exploitation of Structural Loads/Health Data for Reduced Life Cycle Costs" RTO Meeting Proceedings 7, Brussels, Belgium, 11-12 May 1998, Paper 6. Available for download.

Broede, J. and M. Koehl: Aero Engine Life Usage Monitoring Including Safe Crack Propagation. Proceedings of the 2nd International Workshop on Structural Health Monitoring, Stanford University, Stanford, CA, September 8-10, 1999 Available for download.

Koehl, M.: On-Board Engine Life Usage Monitoring by Real Time Computation. Proceedings of the 21st Symposium of the International Committee on Aeronautical Fatigue (ICAF' 2001), Design for Durability in the Digital Age, Volume II, Toulouse, France, June 27-29, 2001. Available for download (Size 642k).

Koehl, M.: Algorithmic Aero Engine Life Usage Monitoring Based on Reference Analysis of Design Mission. Proceedings of the 3rd International Workshop on Structural Health Monitoring, Stanford University, Stanford, CA, September 12-14, 2001. Available for download.

Jürgen Broede Titanium Rotors in Military Aero Engines - Designed to Weight and Life. AVT Specialist's Meeting "Cost Effective Application of Titanium Alloys in Military Platforms", 7 - 11 May 2001, Loen, Norway Available for download. Viewgraphs.

Contact Jürgen Broede
Contact Manfred Köhl