In 1938-1941 RNII (now renamed the Research Institute №3 or NII-3) under chief constructor  engineers , , , R. I. Popov and Vladimir Artemyev designed the Katyusha rocket launcher.
During the years 1938 to 1941, RNII (formerly known as Research Institute №3 or NII-3), led by chief constructors , , , R. I. Popov and Vladimir Artemyev, developed the Katyusha rocket launcher.