[Tilted Irish Kilt]

Retain Mike :" .. The pilots were instructed to 150 degrees from current course and dive to get outside the blast/ air pressure radius. "

An interesting factoid !
At 150 degrees, and in a dive, they escaped the pressure blast, and still had the airplane body as a partial shield,
and were still able to continue their flight undamaged.
I'll bet there was a lot of theoretical physics compiled to reach that conclusion.

[Retain Mike]

That was the advice given to Paul Tibbets by Oppenheimer. The standard practice for bombers was to continue at the same altitude and in the general direction after the bombs were released. By turning and diving the distance was increased and the speed was accelerated and they got further away.

The bomb had a proximity fuse and was supposed to detonate about 90 feet above the ground. Tibbets squadron dropped practice bombs with a small charge. On one run he was piloting, the fuse malfunctioned and the charge detonated immediately after the practice bomb left the aircraft.

I think my source for that information was The Making of the Atomic Bomb by Richard Rhodes