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Measurement of clearances using capacitive proximity sensors in turbine rotor stator cavities

posted on 2023-06-09, 03:02 authored by Daniel PayneDaniel Payne, Vasudevan KanjirakkadVasudevan Kanjirakkad
Experimental displacement measurements are to be made using in-house designed and manufactured capacitive proximity sensors inside the Sussex Rim Seal, RiSe, Rig. Currently prototype sensors have been tested to understand the significance of measuring clearances when a sensor is responsive to both radial and axial movement of a component. The results presented here show how the signal from a sensor designed to measure displacement of a parallel target, changes as the orthogonal distance to the target is also altered. A two-sensor (orthogonal axis) approach has been adopted, calibrated and tested in a mock-up geometry. The measurement accuracy has been shown to have increased to within 0.05mm.


Rotor stator cavity rim seal ingestion; G0792; GE AVIATION; 20018-14016208


Publication status

  • Published

File Version

  • Accepted version

Page range


Presentation Type

  • paper

Event name

XXIII Biennial Symposium on Measuring Techniques in Turbomachinery

Event location

Stuttgart, Germany

Event type


Event date

1 - 2 September 2016

Department affiliated with

  • Engineering and Design Publications

Research groups affiliated with

  • Thermo-Fluid Mechanics Research Centre Publications

Full text available

  • No

Peer reviewed?

  • Yes

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