Аннотация:The two-dimensional supersonic rarefied gas flow past an infinite plate placed normally tothe flow is analyzed. The gas possesses rotational degrees of freedom. The problem is stated for a modelkinetic equation and is solved by applying a second-order accurate implicit conservative finite-difference method. The gas parameters correspond to nitrogen. The results are compared with those obtainedfor a monatomic gas. The influence exerted by the rotational degrees of freedom and the boundary conditions at the plate’s surface on the aerodynamic characteristics of the plate and the flow pattern is illustrated.