Kamikazes didn't wear helmets.
In fact, no pilots wore helmets in World War II. They wore leather flight caps and goggles.
Moreover, extremely few kamikaze pilots ever returned to base. While it is true that some pilots who trained as kamikazes did not get to fly on missions because of the end of the war, the overwhelming majority of kamikazes who were actually sent out never returned. In many cases they were only given enough fuel for a one-way flight. Some later planes were not even equiped with proper landing gear.
They would never have turned back just because the angle of approach was wrong or the anti-aircraft fire was too heavy. These men had spent months preparing themselves to die in suicide attacks - they had already wrote death letters and sent locks of their hair and nail clippings back to their families. They had already been hailed as war-gods by the comrades they left behind at their airfields. They were young and they believed and there was no question of turning back. They had come to die and they did. If they could not find a carrier or a battleship they would settle for another, smaller target. More often they were shot down or ran out of fuel and smashed into the sea.
But they did not wear helmets.
Examples of Kamikaze Headgear:
- http://www.tmgnow.com/IMAGES/kamikaze_pilots.jpg
- http://www.denney-net.co.uk/Chiran%20Kamikaze%20pilots.jpg
- http://graphics.nytimes.com/images/2001/10/28/magazine/28terrorist.2.jpg
- http://www.hobbytyme.com/mdse/ver931.jpg