Abstract <p>The paper presents the results of the study of the model of a flat nozzle blade cascade of various aerodynamic dimensions in the presence of a support strut fairing at the inlet. Experimental wind-tunnel testing on a low-pressure bench and numerical modeling were held. It has been found that aerodynamic interference of fairing and nozzle blade airfoils is manifested in aerodynamically short blade cascades of nozzle blocks. In the blade cascades of aerodynamically long nozzle blocks, the total losses practically do not depend on the mutual arrangement of the fairing of the support strut and the nozzle blade cascade. </p>