This paper presents the effect different of slip boundary conditions on aerodynamics. The effect of continuum breakdown on aerodynamics of lift wing was shown. Present results keep an agreement with the results in reference about flow around the cylinder. The results predicted by Gokcen slip model is in excellent agreement with the DSMC results in higher Knudsen numbers comparing with other slip models. Peak transfer rate differences with different methods increase as the flow becomes more rarefied. Heat transfer rate is influenced much more by rarefaction effect than pressure coefficient by that.