International Applied Reliability Symposium
 

Track 2 Session 3
1:00 to 2:00 p.m. Thursday October 25, 2007

Jet Engine Deterioration Modeling, Reliability Prediction and Analysis

The Propulsion System Analysis (PSA) group at Infotech provides services to assess the performance of jet engines deployed in commercial operation. Current practice is to analyze the measured data on different engine parameters of interest. The process follows data trending for each engine to assess the performance. PSA has formulated and implemented a new reliability engineering process to model the aircraft engine deterioration and life estimation based on Weibull analysis utilizing on-wing data from multiple units. The new process generates estimates on data trending, deterioration rates, mean life, remaining life, failure rate, reliability with confidence bounds, warranty time, relevant statistical results and probability plots. The proposed process from PSA, Infotech is successfully demonstrated with field information. Directions for future work are suggested.

 


 
Ramesh Chandra Kadiyala and Sekhar Dwarapudi
Infotech Enterprises Ltd
Hyderabad, India

Ramesh Chandra Kadiyala specialized in the application of Mathematical, Statistical, Simulation, Modeling, Optimization and Computational Methods to solve the pressing problems faced in Aerospace Engineering.

Dr. Chandra served at the Indian Space Research Organization for three decades holding various positions and made significant contributions in the areas of Propulsion, Structures, Avionics, Data Processing & Analysis, Parameter Estimation, Orbit Determination, Space Geodesy, Tracking Network Planning, System Engineering, Reliability, Real Time Software Development and Execution for Satellite and Launch Vehicle Missions.

Dr. Chandra received a Bachelor of Science Degree in Mathematics from Andhra University, India in 1965, Master of Science in Applied Mathematics from University of Roorkee, India in 1967, PhD in Numerical optimization from Regional Engg College, Warangal, India in 1978. Dr Chandra has published 22 Research papers and 160 Technical Reports. He supervised 12 junior colleagues to acquire M.S. degree in Software Systems and Aerospace Engineering.

Dr. Ramesh Chandra is with Infotech Enterprises Ltd, India as Principal Consultant for Propulsion System Analysis discipline for the last 5 years, and currently working on a) developing a robust software tool to estimate the aircraft engine component performance based on Kalman filter and b) Bayesian analysis of computer code outputs.

 

 

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