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Various experimental and numerical studies of advanced blade configurations for variable inlet guide vanes (VIGVs) were conducted during the past years. Nevertheless, experimental loss characteri-zations of VIGV blade designs vastly focused on the primary profile losses. Secondary flow losses as they occur in a real engine application were often neglected. For this reason, a new wind tunnel facility was erected and commissioned at the Bundeswehr University Munich to enable extensive investigations of application-oriented annular VIGV configurations at typical low subsonic Mach numbers. Five-hole probe field traverses are established by a probe traversing unit in the in-and outflow region of the VIGV. The requirements for a further extension of the applicable measuring techniques by optical methods is moreover provided. Thus, not only profile losses caused by the blades, but also secondary flow losses generated by blade-wall flow interactions and the open blade tips can be resolved in detail.

A New Test Facility for Advanced Testing of Variable Inlet Guide Vanes