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An experimental program was generated by the Icing Technology Branch at NASA Lewis Research Center to validate two ice protection simulation codes: LEWICE/Thermal for transient electrothermal de-icing and anti-icing simulations, and ANTICE for steady state hot gas and electrothermal anti-icing simulations. An electrothermal ice protection system was designed and constructed integral to a 36 inch chord NACA0012 airfoil. The model was fully instrumented with thermocouples, RTD's, and heat flux gages. Tests were conducted at several icing environmental conditions during a two week period at the NASA Lewis Icing Research Tunnel. Experimental results of running-wet and evaporative cases were compared to the ANTICE computer code predictions and are presented in this paper. Nomenclature AOA = angle of attack of body with the freestream air (degrees) Cpw = specific heat (Btu/lbm.°F) h = heat transfer coefficient between the dry surface and the ambient air (Btu/hr.ft .°F) h, = film coefficient between the wet surface and the ambient air (Btu/hr.ft.°F) K = thermal conductivity (Btu/hr.ft.°F) LWC = liquid water content in the freestream (g/m) Lv = water latent heat of vaporization (Btu/lbm) MVD = mean volume droplet diameter in cloud *Engineering Scientist, Member AIAA **De-icing Systems Engineer Microspace Engineer, Member AIAA 'Aerospace Engineer, Member AIAA Copyright © 1997 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved. Hconv Havap (urn) m = surface runback mass flow rate per unit span distance (Ibm/ft.hr) evaP = rate °f surface water evaporation (Ibm/hr.ft) mimp = rate of water droplets impingement (Ibm/hr.ft) q = neater power density (W/in) = convective heat loss (W/in) = evaporative heat loss (W/in) qKE = kinetic heat gain from droplets impact on surface (W/in) Psans sensible heat required to warm the impinging water droplets (W/in ) S = surface distance from stagnation, positive on the upper surface (in) Taw = adiabatic wall temperature (°F) Ts = skin temperature (°F) Ttot = total ambient temperature (°F) T~ = static ambient temperature (°F) V freestream velocity (mph) (3 = droplets collection efficiency p = mass density (Ibm/ft) 1 American Institute of Aeronautics and Astronautics