Minimum-drag cascade design for supersonic flow with subsonic normal velocity component

The variational problem of designing the slender profile of a plane cascade in a supersonic ideal (inviscid and nonheat-conducting) gas flow with a subsonic normal velocity component is solved in the linear approximation. The optimum profiles constructed differ fundamentally from the closest analog — the supersonic single profile creating minimum wave drag for given lift. Following 1], it is easy to show that in this case the optimum profile is a plate at an angle of attack determined by the given lift.Moscow. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 1, pp. 137–146, January–February, 1995.