Tip Clearance Measurement in Modern Compressor Components,

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Abstract:

With regard to maximum efficiency of gas turbine compressors, small blade tip clearances during all engine operating conditions should be achieved. In order to determine the tip clearance during compressor tests, a reliable measuring technique has been developed at MTU. Using this temperature-insensitive capacitive probe system Coulomb system, tip clearance can be monitored even during fast transient conditions. The sensors of the multichannel equipment can operate up to high temperatures without cooling. Application to compressor testing is described in two examples a high-speed centrifugal compressor rig and the intermediate-pressure compressor of a jet engine.

Author(s):
Knoell, Hartwig ; Ding, Kurt
Author Organization(s):
MOTOREN- UND TURBINEN-UNION G M B H MUNICH (GERMANY F R)
Supplementary Note:
This article is from 'Advanced Instrumentation for Aero Engine Components: Conference Proceedings of the Propulsion and Energetics Panel Symposium (67th) Held in Philadelphia, Pennsylvania on 19-23 May 1986,' AD-A182 954, p29-1-29-10.
Pagination:
0010

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*COMPRESSOR BLADES, *TEST SETS, CLEARANCES, ELECTRICAL MEASUREMENT, PROBES, MULTICHANNEL, CALIBRATION, CENTRIFUGAL COMPRESSORS, JET ENGINES, DATA ACQUISITION, WEST GERMANY
Field(s)/Group(s):
Test Facilities, Equipment and Methods, Jet and Gas Turbine Engines
Keyword(s):
Blade tips, Coulomb probes, Blade tip clearances, Component Reports
Report Date:
1986 Nov 01