A5064415896- Turbomachinery Performance and Optimization
- Spacecraft and Cryogenic Technologies
- Tribology and Lubrication Engineering
- Heat Transfer and Optimization
- Refrigeration and Air Conditioning Technologies
- Probabilistic and Robust Engineering Design
- Astronomy and Astrophysical Research
- Heat Transfer and Boiling Studies
- Stellar, planetary, and galactic studies
- Collaborative Teaching and Inclusion
- Innovative Teaching Methods
- Adaptive optics and wavefront sensing
- Aerodynamics and Fluid Dynamics Research
- Advanced Power Generation Technologies
- Heat Transfer Mechanisms
- Advanced Aircraft Design and Technologies
- Advanced Measurement and Metrology Techniques
- Brake Systems and Friction Analysis
- Astro and Planetary Science
- Rocket and propulsion systems research
- Electrohydrodynamics and Fluid Dynamics
- Bladed Disk Vibration Dynamics
- Plasma Diagnostics and Applications
- Structural Health Monitoring Techniques
- Problem and Project Based Learning
Cornell University
2020-2025
McCormick (United States)
2020
University of Oxford
2014-2017
Extending disc life through online health monitoring has been a proven method of minimising engine downtime and maintenance costs. To properly monitor the requires robust model disc’s non-linear thermal dynamics. A can be improved by filtering output using measurement in real time. The damage models then computed with higher statistical confidence leading to increased safe prediction. Recently, temperature developed based on proper orthogonal decomposition simulated data. produced detailed...
Non-uniform temperature distributions in aircraft turbine and compressor discs result high thermal stresses, particularly during engine transients. This has an important role limiting disc life subsequently time on wing between overhauls. Typically, the absence of specific real-time information, is computed declared at design stage, for whole fleet assuming worst case scenarios flight profiles. approach potentially leads to conservativeness prediction majority engines fleet. The purpose this...
This paper describes the design and development of a major new facility capable reproducing flow conditions for large civil aero engine turbine compressor segment cavities. The reproduces in 3-D, typical secondary air system cruise temperatures, pressures mass flows. allows better understanding circumferential heat transfer effects flows on casings, as these have significant influence both steady-state transient blade tip clearance behavior. Different architectural solutions are considered...
Abstract We piloted a mastery-style assessment method in one section of sophomore-level Statics and Mechanics Materials course at Cornell University. The main goal this approach is to move student staff effort away from rote completion grading homework problems towards building problem solving skills, as demonstrated with successful work on exams. Our inspired by the Averill, Roccabianca, Rechtenwald Michigan State University (MSU), but our implementation differs theirs several key aspects....
This paper presents a novel approach to real-time modeling of disk temperature distribution using proper orthogonal decomposition (POD). The method combines singular value (SVD) techniques with series low-order transfer functions predict the disk's thermal response over typical flight. model uses only typically available full authority digital electronic control (FADEC) measurements accuracy ±30 K whole flight cycle. A Kalman filter has also been developed based on single measurement, and...
View Video Presentation: https://doi.org/10.2514/6.2021-3566.vid Water is fast becoming a lucrative resource for development as propellant due to its stable nature and potential extraplanetary acquisition. We have evaluated thorough cross-section of water-fueled propulsion systems which are currently in academia the commercial space markets. Resistojets been demonstrated successfully satellite attitude control most common technology on market water-based thrusters. Other electrothermal...
This paper presents a novel approach to modelling disc temperature distributions for use in health monitoring applications. The method combines singular value decomposition techniques with series of low order transfer functions predict the thermal response over typical flight cycle. model inputs reflect online measurements; engine speed, altitude, and compressor exit temperature. model’s complexity has been reduced by projection truncation reference data its decompositions. predicts...
This paper presents the mission design of SIZLE (SmallSat to Image Zodiacal Light Above Ecliptic), a pioneering endeavor tailored for NASA's Astrophysics Pioneers Program. SIZLE's main science will aim address fundamental questions outlined in Decadal Strategy Planetary Science and Astrobiology 2023-2032. The primary objective this is enhance our understanding interplanetary dust grains by capturing imagery zodiacal light. Furthermore, aims demonstrate viability solar sails as propulsion...
Mathematical models across the applied sciences often utilize a standard methodological representation called state variable formulation more commonly referred to as space form. Recent research in unmanned underwater vehicle motor turbine blade thermal modeling for fatigue-life is generalized here permitting proposed novel from be electrodynamics, motion mechanics, and many other disciplines. Proposed very compact form inherently representing time variance, with convenient presentation of...