My grandmothers German housekeeper had a brother that was a Stuka pilot and he told her that when they were dive bombing he and his crewman would yell all the way down because of the noise. And they could black out because of the G force and loose vision temporarily.
Which was why the JU87 (and I believe the JU88) was fitted with an automatic 'pull-out' system in case of crew blackout. divebomb