"The JB-2 was a U.S.-made copy of the famous German V-1 surface-to-surface, pilotless flying bomb first used against England in June 1944. The Republic Aviation Corp. built the airframe for the JB-2 from drawings prepared at Wright Field, using dimensions taken from the remains of several V-1s brought from Germany. The Ford Motor Co. built the engine, which was a copy of the V-1's 900-lb. thrust Argus-Schmidt pulse-jet.
Republic and Ford built 1,000 JB-2s for the Army and Navy. Production...
