RE: what caused the turbine jet crash??!!!!!
Kimhey, I agree with you.
Lenhard, sorry !! We all know what you feel.
In my opinion, the load of the flaps lowered the battery voltage to a point where even if the receiver is still working, the servos are dead.
There was no abrupt roll or pitch change. All failed smooth and gradual. Dead servos.
If the turbine was off at impact (no fire), and Lenhard didn't shut it off: the voltage went so low that the ECU shut it off.
If the voltage at the receiver is still close to 4 volts, the ECU doesn't shut down for low voltage. But again, servos are dead.
I have seen this happen a few times before, for the same cause. And with the model describing the exact same trajectory. And happens when you lower the flaps.
In one occasion, the batteries were OK, but the regulator failed when lowering the flaps.
BTW, I have simulated all these scenarios at my shop. There is a thread somewhere here that my son wrote on this subject.
We compared No Fly Voltages of Li-Po vs. Li-Ion and they are quite different. There is a table of comparison in that thread. I will try to find it.
Jack