You’re working under the modern assumption that helmets were worn by Japanese Kamikaze pilots to prevent death and injury.
But helmets wouldn’t do much in a plane crash, anyway.
They were there for warmth, to hold the two-way radio for communication, and to protect your head from minor bangs that can occur from a sudden motion of the aircraft.
You know, like the moment when you decide to go into a suicide dive toward an aircraft carrier.
