NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Time-of-Flight Tip-Clearance MeasurementsIn this paper a time-of-flight probe system incorporating the two integrated fiber optic probes which are tilted equally relative to the probe holder centerline, is applied for the first time to measure the tip clearance of an advanced fan prototype. Tip clearance is largely independent of the signal amplitude and it relies on timing measurement. This work exposes optical effects associated with the fan blade stagger angle that were absent during the original spin-rig experiment on the zero stagger rotor. Individual blade tip clearances were measured with accuracy of +/- 127-mm (+/- 0.005-in). Probe features are discussed and improvements to the design are suggested.
Document ID
19990047712
Acquisition Source
Glenn Research Center
Document Type
Reprint (Version printed in journal)
Authors
Dhadwal, H. S. (Integrated Fiber Optic Systems, Inc. Stony Brook, NY United States)
Kurkov, A. P. (NASA Glenn Research Center Cleveland, OH United States)
Janetzke, D. C. (NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1999
Subject Category
Instrumentation And Photography
Report/Patent Number
NASA/TM-1999-209183
NAS 1.15:209183
AIAA Paper 99-2134
E-11692
Meeting Information
Meeting: Propulsion
Location: Los Angeles, CA
Country: United States
Start Date: June 20, 1999
End Date: June 24, 1999
Sponsors: American Society for Electrical Engineers, Society of Automotive Engineers, Inc., American Society of Mechanical Engineers, American Inst. of Aeronautics and Astronautics
Funding Number(s)
PROJECT: RTOP 538-03-11
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available