A Transonic Axial Compressor Facility for Fundamental Research and Flow Control Development Joshua D. Cameron ∗ University of Notre Dame, Notre Dame, IN, 46556, USA Charles P. Gendrich † Pratt & Whitney, East Hartford, CT, 06108, USA Scott C. Morris ‡ and Thomas C. Corke § University of Notre Dame, Notre Dame, IN, 46556, USA A single -stage transoni c axial compresso r facilit y has been constructed at the Universit y of Notre Dame. The initi al blading consis ts of inlet gui de vanes followed by a rot or and stator row. The stage has a des ign pres sure ratio of 1.55 at a cor rec ted mass flow rate of 9.97 kg/s . The desi gn blade tip spee d is 352 m/s and the rotor tip relat ive Mac h numbe r at design is 1.27. The casi ng outer diameter is 0.457 m. Efforts wer e made to ensur e that the blade design is comparable to that found in the the curren t generation of aero -gas turbine engines. The compress or stage and facilit y were designed to withst and operation of the compressor in surge and stall. In addition, the fac ilit y is equippe d with cus tom design ed active magnetic bearing s for active whirl actuation. These featu res, along with the substant ial optical access provided by the casing des ign, mak e the fac ilit y ideal for detailed studies of the blade passage flow during and after stall inception. Baseline performance data in the form of pressure ratio char acteri stics are prese nted al ong wit h a brief descri ption of the stall beha vio r of the stage. The operati on of the magnetic bearing system and its expected utility as both a research tool and an actuator for stability control are also discussed. Nomenclature M Mach Number p Pressure T Temperature ¯ c z Mass Averaged Axial Velocity N Shaft Speed U Blade Speed Φ F low Coeffic ie nt ¯ cz U tip Ψ Loading Coe fficien t ∆h T U 2 tip θ Inlet Total Temperature Normalized by Standard Day Temperature δ Inlet Total Pressure Normalized by Standard Day Pressure ˙ m Mass Flow Rate η Adiabatic Efficiency ∗ Ph.D. Candidate, Department of Aerospace and Mechanical Engineering, Student Member AIAA. † Staff Engineer, Hollow Fan Blade Engineering. ‡ Assistant Professor, Department of Aerospace and Mechanical Engineering, Member AIAA. § Clark Chair Professor, Department of Aerospace and Mechanical Engineering, Associate Fellow AIAA. 1 of 9 American Institute of Aeronautics and Astronautics 44th AIAA Aerospace Sciences Meeting and Exhibit 9 - 12 January 2006, Reno, Nevada AIAA 2006-416 Copyright © 2006 by J. D. Cameron, C. P. Gendrich, Scott. C. Morris, and T. C. Corke. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.
