Question: Were the antennae necessary for proximity detonation above the surface?
My Dad shipped into Manila Bay in early June of 1945. On this day in 1945, he and his buddies were waiting for orders anytime to go to Mainland Japan for the invasion.
Thank you, scientists and Harry Truman. He lived to be 94.
Sorry, no idea, the drawing leaves out all reference to radar & electrical components.
To answer your question, YES. Little Boy was designed to go off at about 1300 feet above ground. It used a radar altimeter to determine the height above the surface. The antennae on the side were for the radar altimeter.