"The Mark IID proved devastatingly effective, though its increased weight and the drag of the underwing cannon did impose a performance penalty, and pilots had to fly slightly nose-down when firing the cannon, since the recoil tended to make the fighter pitch up."
http://www.faqs.org/docs/air/avhurr.htmlInteresting. Underwing cannon causes HurriD to pitch up.
The sentence itself does not make sense. I'd think that you need to fly so that your sight points at the target in order to hit it so "flying nose down" does not mean anything except that you need to fly a bit nose down to hit ground targets.
-C+
