The design and test of a two-stage, vaneless, aspirated counter-rotating fan is presented in this paper. The fan nominal design objectives were a pressure ratio of 3:1 and adiabatic efficiency of 87%. A pressure ratio of 2.9 at 89% efficiency was measured in the tests. The configuration consists of a counter-swirl-producing inlet guide vane, followed by a high tip speed (1450 feet/sec) non-aspirated rotor, and a counter-rotating low speed (1150 feet/sec) aspirated rotor. The lower tip speed and lower solidity of the second rotor results in a blade loading above conventional limits, but enables a balance between the shock loss and viscous boundary layer loss, the latter of which can be controlled by aspiration. The aspiration slot on the second rotor suction surface extends from the hub up to 80% span, with a conventional tip clearance, and the bleed flow is discharged at the hub. The fan was tested in a short duration blowdown facility. Particular attention was given to the design of the instrumentation to obtain efficiency measurements within 0.5 percentage points. High response static pressure measurements were taken between the rotors and downstream of the fan to determine the stall behavior. Pressure ratio, mass flow, and efficiency on speedlines from 90% to 102% of the design speed are presented and discussed along with comparison to CFD predictions and design intent. The results presented here complement those presented earlier for two aspirated fan stages with tip shrouds, extending the validated design space for aspirated compressors to include designs with conventional unshrouded rotors and with inward removal of the aspirated flow.
Skip Nav Destination
ASME Turbo Expo 2006: Power for Land, Sea, and Air
May 8–11, 2006
Barcelona, Spain
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
0-7918-4241-X
PROCEEDINGS PAPER
Design and Test of an Aspirated Counter-Rotating Fan
Jack L. Kerrebrock,
Jack L. Kerrebrock
Massachusetts Institute of Technology, Cambridge, MA
Search for other works by this author on:
Alan H. Epstein,
Alan H. Epstein
Massachusetts Institute of Technology, Cambridge, MA
Search for other works by this author on:
Ali A. Merchant,
Ali A. Merchant
Massachusetts Institute of Technology, Cambridge, MA
Search for other works by this author on:
Gerald R. Guenette,
Gerald R. Guenette
Massachusetts Institute of Technology, Cambridge, MA
Search for other works by this author on:
David Parker,
David Parker
Massachusetts Institute of Technology, Cambridge, MA
Search for other works by this author on:
Jean-Francois Onnee,
Jean-Francois Onnee
Massachusetts Institute of Technology, Cambridge, MA
Search for other works by this author on:
Fritz Neumayer,
Fritz Neumayer
Massachusetts Institute of Technology, Cambridge, MA
Search for other works by this author on:
John J. Adamczyk,
John J. Adamczyk
NASA Glenn Research Center, Cleveland, OH
Search for other works by this author on:
Aamir Shabbir
Aamir Shabbir
University of Toledo, Toledo, OH
Search for other works by this author on:
Jack L. Kerrebrock
Massachusetts Institute of Technology, Cambridge, MA
Alan H. Epstein
Massachusetts Institute of Technology, Cambridge, MA
Ali A. Merchant
Massachusetts Institute of Technology, Cambridge, MA
Gerald R. Guenette
Massachusetts Institute of Technology, Cambridge, MA
David Parker
Massachusetts Institute of Technology, Cambridge, MA
Jean-Francois Onnee
Massachusetts Institute of Technology, Cambridge, MA
Fritz Neumayer
Massachusetts Institute of Technology, Cambridge, MA
John J. Adamczyk
NASA Glenn Research Center, Cleveland, OH
Aamir Shabbir
University of Toledo, Toledo, OH
Paper No:
GT2006-90582, pp. 293-302; 10 pages
Published Online:
September 19, 2008
Citation
Kerrebrock, JL, Epstein, AH, Merchant, AA, Guenette, GR, Parker, D, Onnee, J, Neumayer, F, Adamczyk, JJ, & Shabbir, A. "Design and Test of an Aspirated Counter-Rotating Fan." Proceedings of the ASME Turbo Expo 2006: Power for Land, Sea, and Air. Volume 6: Turbomachinery, Parts A and B. Barcelona, Spain. May 8–11, 2006. pp. 293-302. ASME. https://doi.org/10.1115/GT2006-90582
Download citation file:
18
Views
0
Citations
Related Proceedings Papers
Related Articles
The Design of Highly Loaded Axial Compressors
J. Turbomach (July,2011)
A Study of Advanced High-Loaded Transonic Turbine Airfoils
J. Turbomach (October,2006)
Related Chapters
Introduction
Design and Analysis of Centrifugal Compressors
Aerodynamic Performance Analysis
Axial-Flow Compressors
Other Components and Variations
Axial-Flow Compressors