Develop Advanced Sensor Technology and rotordynamic structural diagnostics to address existing Aviation Safety Propulsion Health Management needs as well as proactively begin to address anticipated safety issues for new technologies

Abdul-Aziz, A.

Adamovsky, G.

Berger, D.

Fralick, G.

Gyekenyesi, A.

Hunter, G.

Lekki, J.

Tokars, R.

Venti, M.

Woike, M.

Wrbanek, J.

Wrbanek, S.

NASA Technical Reports Server

J. Lekki(a), A. Abdui-Aziz(bl, G . Adamovsky<al, D. Berger(cl, G. Fralick<al, A. Gyekenyesi<dl, 
G. Hunter(al, R. Tokars<al , M. Venti<el, M. Woike<al, J. Wrbanek<al, S. Wrbanek(a) 
(a) NASA GRC, (b) Cleveland State University, (c) NASA DFRC, (d) Ohio Aerospace Institute, (e) Tybrin Corporation 
Objective: 
Develop Advanced Sensor Technology and rotordynamic structural 
diagnostics to address existing Aviation Safety Propulsion Health 
Management needs as well as proactively begin to address 
anticipated safety issues for new technologies 
Microwave Blade Tip Clearance I Tip 
Timing Sensor 
Blade Tip Clearance to monitor 
blade growth & wear 
Blade Tip Timing to monitor blade 
deflection & vibration 
Goal is to detect precursors to faults 
and prevent a blade I disk "event" 
before it happens 
Engine Failure Incident 
June 2, 2006 
Microwave Tip Clearance Probe 
Fiber optic sensors mitigate potential reliability & performance 
issues associated with conventional sensors and have integration 
advantages 
Developed & demonstrated 
high temperature optical 
sensors operational at 1000 
C for up to 1 000 hours 
SDA and High Freq Vibration Sensors 
Emissions Sensors to Quantify composition of critical constituents in turbine 
engine exhaust products, E.G., CO, C02, NOX, 0 2, HC (unburned Hydrocarbons) 
co 
Sensor 
SiC Hydrocarbon 
Sensor C02 Sensor 
Vehicle Integrated Propulsion Research (VIPR) engine tests (2011 to 2013) 
as a part of Technology Development 
Engine testing is a necessary and challenging component of VHM technology 
development. 
Test Objective: Demonstrate multiple structural and gas path health management 
sensors in an operating engine environment. Integrate sensor I detection 
technologies with Structural and Gas Path diagnostics. 
Approach: Perform engine ground tests using commercial derivative engine. 
Conduct normal engine operations and also operations that have seeded 
mechanical and gas path faults (simulated). 
Self Diagnostic Accelerometer: For mission critical 
decisions, such as an engine being shut off due to 
anomalous acceleration readings, ensuring sensor 
heath is critical. Dr:] JLLJ 
lr~n>.:> 
On-Component Thin Film Sensors for monitoring 
degradation and damage that develops over time in 
hot section components · 
PdCr strain sensor 
to T=1ooo·c 
Rotordynamics for Structural Health Management 
Diagnostics - Crack Signatures obtained through 
Subscale Engine Disk Spin Rig 
NASA Aviation Safety Annual Technical Meeting, St. Louis, MO May 10- 12, 2011 
https://ntrs.nasa.gov/search.jsp?R=20150010319 2019-08-31T08:06:21+00:00Z


Sensors and Rotordynamics Health Management Research for Aircraft Turbine Engines

Sensors and Rotordynamics Health Management Research for Aircraft Turbine Engines

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