On 13/07/2020 09:31, Tim Lamb wrote:
I assume the cases stayed in the aeroplane (or what would stop them
hitting your mate behind?) and they certainly do on the A10. You
wouldn't want to fly though a cloud of over a 1000 30mm shell casings
coming out at ~70 a second! ;-(

Pass.

20mmm (not 30mm) cannon do not fire at 70 rounds a second., Only a
Gatling does that rate of fire. 70 a minutes is more like it.

I am not aware as to whether they eject spent casings. WWII aircraft
certainly did - you can see the shutes on a Camel...it would make sense
to do so, but of course you do not fly behind and underneath an enemy
fighter firing his gun


A Browning machine gun is .303 calibre - 0.303 inch or around 7.7mm. It
has a rate of fire around 20 rounds a second. 0.30 calibre is the
standard 7.62mm round.

So 8 of them would be dropping 160 casings a second.

a 20mm Cannon of that era is around 11-12 rounds per second.

I think no attack aircraft ever had more than four cannon.

Hawker Tempests and Typhoons featured four, as did some later Hurricanes
and Spitfires..

So 40 casings a second.


--
How fortunate for governments that the people they administer don't think.

Adolf Hitler