Tekata, unless I'm misreading something (quite possible) I think you misinterpreted the question in JD-EE's post. I think he was saying something like
- assuming they were on course at 0210 and then decided they were in a bad place and for some reason decided to turn, what is the turning circle/radius at FL350 and 468kt?
- Assuming they turned starting at 0410, and further assuming they hit sometime near 0414 or a little after, where could they have hit?
My bad if I misunderstood something, but have a look at the situation which could develop and tell me what you would do in the seat of F-GZCP's driver?
0209.. heading to TASIL, cruise, slightly deviating to the west in order to avoid a suspected dangerous cell.
0210.. AP/A/THR kicking OFF
.. ALT2, etc, warnings
.. thrust and AOA set to adequate values (N1=91, 3.5 deg?)
.. de-icing ON
.. troobleshooting start
0214.. engines rollback (ice)
.. pitch down to avoid stall
.. start emergency descent
.. cabin vertical speed advisory
.. engines flame out (after 15 mn of flight in CBs, mostly in Anvil)
.. EMER ELEC => ACARS fails, only HF1 & VHF1 left
What to do now?
1. aviate: avoiding stall?
2. navigate: where we go?
.. Cap Verde: ahead but too far
.. Brazil (Fernando Noronha) turn needed without colliding an active cell
3. communicate: Mayday? we'll see later, hands full now
What could be the turn radius in this case? Certainly the best possible in order to keep the aircraft under human control and not to lose too much speed/altitude? The turn-East option seems locked because of the bad cells, so turn to the West?
S~
Olivier