"ArtKramr" wrote in message
...
In conjunction with your comment about the gunner's remarks to you; if
simple aerodynamics wasn't a part of every gunner's training during the
war,
it most surely should have been. What this gunner was telling you might
have
been from his training knowledge base or simply as the observed result of
his personal experience. The end result would be the same for recognizing
what the fighter was about to do, but the big difference would have been
the
advantage to gunners having this knowledge up front going into combat as
opposed to finding it out through operational experience.
Every gunner out there should have had at least some basic knowledge of
positive and negative g as that knowledge relates to a firing pass by a
fighter. Those who didn't had to learn the hard way. Gunners being taught
a
few simple facts about g and vectors would have saved many lives........
and
as this knowledge relates to a firing pass, could have been taught in
just a
few minutes during training.
The simple truth of it is that if the fighter rolled inverted during the
pass, in order to pass over you he would have to bunt the airplane into
negative g, and the odds of this happening vs going the positive g route
under you would have all but been a sure bet that he would go positive
under
you; hence the lead would become predictable based on the odds.
I should add that there were a few German fighter pilots who routinely
would
go negative, but never offensively, only defensively.
Erich Hartmann was one of them, and he was not in the theatre.
I've always wanted to ask a gunner from the period if simple aerodynamics
was indeed taught in gunnery training to help with prediction lead
solution,
but somehow I've always forgotten to ask
:-) If there are any gunners out there who can answer this, perhaps they
will post.
Dudley



I think the answer would be no. When I went through gunnery training on
the
way to bomb school they didn't even teach us about that. And the first
time I
heard it, it is was totally new to me. I had to really see it to believe
it.
And when I saw it I thought, "why the hell is he coming in on his back?
Crazy
Krauts"

Actually, going under is a practical air to air maneuver for a firing pass
on specific targets executed in the scenario given, although the point
through the run where the fighter rolled would be critical for him. Too
early and he would be faced with holding the aircraft in pitch on the target
while he fired entering his max/min range for his weapons. Firing through
the rotation in roll as he entered his range parameters for guns would have
produced a trajectory shift and gravity drop error you would have to see to
believe, for all but the most highly skilled pilots.
The pro of such a pass is the ability to maintain or even produce exit
energy on the back side of the firing envelope through the run, exiting down
and out maintaining maneuvering energy for a possible defensive maneuver if
the run was followed through by a hostile (to him) shooter. Also, this
energy could be expended in a transition to another high side run if
unopposed. The cons are an almost certain off center ball through the run
which would play hell with the projectile trajectories and an almost certain
predictability of the exit direction for a real sharp gunner. These tactics
I'm sure were almost certainly target aircraft specific , at least for the
more able of the German pilots. They would have been familiar with the ideal
angle offs and target aspects for the specific target type and made their
runs if possible to take advantage of that data.
Dudley