wrote in message
...
Ah... Well... I just through some random numbers in there... Of course,
one
would not try and pull a 57G turn as cool as it sounds...

Thanks for the lesson! I learned something new today...


The calculator is correct by my reckoning. 80mph and 89 degree bank
gives 8 ft radius turning circle which is correct in theory. it sounds
ridiculous but really the 89 degree angle of bank is what is ridiculous
..
such a turn if possible would pull 57 g. the calculation is not that
difficult. radius= v squared / g tan ( bank angle)
terry

I should add that this calulation assumes all the lift is coming from the
wing , but that theory would imply that an aircraft cant hold altitude in a
90 degree bank, and of course we have all seen aerobatic aircraft do this.
For this to occur the lift must be coming from the fuselage of the aircraft
and so the equation will not be strictly correct. But for the type of turns
that mere mortals like me will do I think it tells the story. I have heard
guys on this group regulary mention 60 degree or 2 g turns, but in my
training steep turns were 45 degrees maximum.
terry