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Simultaneous optical measurements of axial and tangential steady-state blade deflections
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kurkov, Anatole P. Dhadwal, Harbans S. |
| Copyright Year | 1999 |
| Description | Currently, the majority of fiber-optic blade instrumentation is being designed and manufactured by aircraft-engine companies for their own use. The most commonly employed probe for optical blade deflection measurements is the spot probe. One of its characteristics is that the incident spot on a blade is not fixed relative to the blade, but changes depending on the blade deformation associated with centrifugal and aerodynamic loading. While there are geometrically more complicated optical probe designs in use by different engine companies, this paper offers an alternate solution derived from a probe-mount design feature that allows one to change the probe axial position until the incident spot contacts either a leading or a trailing edge. By tracing the axial position of either blade edge one is essentially extending the deflection measurement to two dimensions, axial and tangential. The blade deflection measurements were obtained during a wind tunnel test of a fan prototype. |
| File Size | 575265 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19990032035 |
| Archival Resource Key | ark:/13960/t4mm1899r |
| Language | English |
| Publisher Date | 1999-03-01 |
| Access Restriction | Open |
| Subject Keyword | Optics Optical Measurement Prototypes Trailing Edges Wind Tunnel Tests Centrifugal Force Turbomachinery Aircraft Engines Leading Edges Aerodynamic Loads Fiber Optics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
