A proposal by
Karl Stöckel for an interceptor with mixed propulsion.
Source : "Ludwig Bölkow und sein Werk-Ottobrunner Innovationen;Die deutsche Luftfahrt Bd 12" by Kyrill von Gersdorff , Bernard&Graefe Verlag (1987)
Three-view : https://cdn1.imggmi.com/uploads/2018/5/27/74b51b994de44e66524ba0afe4e40dbe-full.jpg