[Paladin2]

I'm unclear ont eh cannon firing rate vs. prop blade passing rate and the variations of each plotted up.

It's certainly possible to avoid the prop blades, but just how tough is it?

[txnativegop]

it is just a matter of timing, how long will the projectile take to get from firing point to the prop disk.

the fastest rate of fire that I am aware is 1500 rpm.

but for the basics of it try this :

http://en.wikipedia.org/wiki/Synchronization_gear

[okie01]

I'm unclear ont eh cannon firing rate vs. prop blade passing rate and the variations of each plotted up. It's certainly possible to avoid the prop blades, but just how tough is it?

Many WW II aircraft had nose-mounted machine guns firing thru the propeller arc. They were synchronized so as to avoid damage.

Apparently, it was no big deal.

[KarlInOhio]

I'm unclear ont eh cannon firing rate vs. prop blade passing rate and the variations of each plotted up.

It's certainly possible to avoid the prop blades, but just how tough is it?

It took a pretty smart Fokker to invent the interrupter gear to fire the machine gun when the prop isn't in the way.