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Envelope Protection System for Iced Airfoils Using Flap Hinge Moment
Technical Paper
2011-38-0066
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A stall prediction method based on unsteady hinge moment measurements was previously developed from experimental hinge moment measurements on a NACA 3415 airfoil model under a clean configuration and four iced configurations. The stall prediction algorithm was based on three separate detector functions. Additional hinge moment measurements have been obtained experimentally for a NACA 23012 airfoil model, using these same clean and iced configurations. Tests were also conducted with boundary-layer trips on the model upper and lower surfaces. The addition of simulated icing degraded the performance of the NACA 23012. Upon application of the hinge moment stall prediction method, two of the six configurations provided detector function outputs that were inconsistent with the other four configurations. Further investigation revealed differences in the hinge moment signal between contamination configurations due to the presence of different types and extents of primary stall mechanisms. Larger amounts of energy were observed in the hinge moment at low-frequency ranges for the clean and simulated horn-ice cases than the other contamination configurations. This increase in energy was attributed to greater energy content in the pressure forcing on the flap upper surface at these low frequencies.
Authors
Citation
Ansell, P., Bragg, M., and Kerho, M., "Envelope Protection System for Iced Airfoils Using Flap Hinge Moment," SAE Technical Paper 2011-38-0066, 2011, https://doi.org/10.4271/2011-38-0066.Also In
References
- Jones, S. M. Reveley, M. S. Evans, J.K. Barrientos, F. A. Subsonic Aircraft Safety Icing Study NASA TM-2008-215107 Jan. 2008
- Reehorst, A. L. Addy, H. E. Colantonio, R. O. “Examination of Icing Induced Loss of Control and Its Mitigations,” AIAA-2010-8140, AIAA Guidance, Navigation, and Control Conference Toronto, Ontario Aug. 2010
- Busch, G. T. Broeren, A. P. Bragg, M. B. “Aerodynamic Simulation of a Horn-ice Accretion on a Subscale Model,” AIAA-2007-0087, 45th AIAA Aerospace Sciences Meeting and Exhibit Reno, NV Jan. 2007
- Bragg, M. B. Broeren, A. P. Blumenthal, L. “Iced-Airfoil Aerodynamics,” Progress in Aerospace Sciences 41 5 2005 323 362
- Ratvasky, T. P. Barnhart, B. P. Lee, S. “Current Methods Modeling and Simulating Icing Effects on Aircraft Performance, Stability, Control,” AIAA Journal of Aircraft 47 1 2010 201 211
- Trunov, O. K. Ingelman-Sundberg, M. “On the Problem of Horizontal Tail Stall Due to Ice,” The Swedish-Soviet Working Group on Scientific-Technical Cooperation in the Field of Flight Safety, Report No. JR-3 1985
- National Transportation Safety Board 22 October 1996 Probable Cause, Regist. Number N401AM. National Transportation Safety Board Aviation Accident Database and Synopses Washington, DC
- Gurbacki, H.M. Bragg, M.B. “Sensing Aircraft Effects by Flap Hinge Moment Measurements,” AIAA-99-3149, 17th Applied Aerodynamics Conference Norfolk, VA Jun. 1999
- Bragg, M. B. Gurbacki, H. M. “Aircraft Surface Contamination Sensing System Using Control Surface Hinge Moment Measurements.” Patent 6,140,942 31 Oct. 2000
- Catlin, P. A. Ballard, D. C. Watson, G. S. Worden, A. M. “Aircraft Stall Warning System.” Patent 5,595,357 21 Jan. 1997
- Bragg, M. B. Basar, T. Perkins, W. R. Selig, M. S. Voulgaris, P. G. Melody, J. W. Sarter, N. B. “Smart Icing Systems for Aircraft Icing Safety,” 40th AIAA Aerospace Sciences Meeting and Exhibit Reno, NV Jan. 2002
- Keller, J. D. McKillip, R. M. Kim, S. “Aircraft Flight Envelope Determination using Upset Detection and Physical Modeling Methods,” AIAA-2009-6259, AIAA Guidance, Navication, and Control Conference Chicago, IL Aug. 2009
- Gingras, D. R. Barnhart, B. Ranaudo, R. Ratvasky, T. P. Morelli, E. “Envelope Protection for In-Flight Ice Contamination,” AIAA-2009-1458, 47th AIAA Aerospace Sciences Meeting Including The New Horizons Forum and Aerospace Exposition Orlando, FL Jan. 2009
- Ansell, P. J. Bragg, M.B. Kerho, M. F. “Envelope Protection System Using Flap Hinge Moment Measurements,” AIAA-2010-4225, 28th AIAA Applied Aerodynamics Conference Chicago, IL Jun. 2010
- Kerho, M. F. Bragg, M. B. Ansell, P. J. “Detector Function and System for Predicting Airfoil Stall from Hinge Moment Measurements,” Provisional Application for Patent, No. 61/442,054
- Ansell, P. J. “Flight Envelope Protection Using Flap Hinge Moment Measurement,” M.S. Thesis University of Illinois Urbana-Champaign 2010
- Pohlhausen, E. “Der Wärmeaustausch zwischen fester Körpen und Flüssigkeiten mit kleiner Reibung und kleiner Wärmeleitung,” Zeitschrift für Angewandte Mathematik und Mechanik 1 1921 115 121
- Lee, S. Bragg, M. B. “Experimental Investigation of Simulated Large-Droplet Ice Shapes on Airfoil Aerodynamics,” AIAA Journal of Aircraft 36 5 1999 844 855
- Broeren, A. P. Whalen, E. A. Busch, G. T. Bragg, M. B. “Aerodynamic Simulation of Runback Ice Accretion,” AIAA-2009-4261, 1st AIAA Atmospheric and Space Environments Conference San Antonio, TX June 2009
- Lu, B. Bragg, M. B. “Airfoil Drag Measurements with Simulated Leading-Edge Ice Using the Wake Survey Method,” AIAA-2003-1094, 41st Aerospace Sciences Meeting and Exhibit Reno, NV Jan. 2003
- Whalen, E. A. Broeren, A. P. Bragg, M. B. “Aerodynamics of Scaled Runback Ice Accretions,” AIAA Journal of Aircraft 45 3 2008 591 603
- Broeren, A. P. Bragg, M. B. Lee, S. Moens, F. Guffond, D. “Effect of High-Fidelity Ice Accretion Simulations on the Performance of a Full-Scale Airfoil Model,” AIAA-2008-434, 46th AIAA Aerospace Sciences Meeting and Exhibit Reno, NV Jan. 2008
- Busch, G. T. Broeren, A. P. Bragg, M. B. “Aerodynamic Fidelity of Sub-scale Two-Dimensional Ice Accretion Simulations,” AIAA-2008-7062, 26th AIAA Applied Aerodynamics Conference Honolulu, HI Aug. 2008
- Broeren, A. P. Bragg, M. B. “Effect of Airfoil Geometry on Performance with Simulated Intercycle Ice Accretions,” AIAA Journal of Aircraft 42 1 2005 121 130 AIAA Paper 2003-0728 Jan. 2003
- McCullough, G. B. Gault, D. E. Examples of Three Representative Types of Airfoil-Section Stall at Low Speed NACA-TN-2502 Sept. 1951
- Sarter, N. B. Schroeder, B. “Supporting Decision Making and Action Selection under Time Pressure and Uncertainty: The Case of In-Flight Icing,” Human Factors: The Journal of the Human Factors and Ergonomics Society 43 4 2001 573 583
- Broeren, A. P. “An Experimental Study of Unsteady Flow over Airfoils near Stall,” Ph.D. Dissertation University of Illinois Urbana-Champaign 2000
- Gurbacki, H. M. “Ice-Induced Unsteady Flowfield Effects on Airfoil Performance,” Ph.D. Dissertation University of Illinois Urbana-Champaign 2003