Multiple simulations

[martaaay]

Hi!
I have a scene where a helicopter gets hit and explodes chunks. That's all working. When he hits the ground, I'd like the ground to crumble. This seems best in 2 simulation steps. I'd prefer to not bake in any simulation steps, and I have to change around what's an impact object, and what's unyielding, etc. Would it be hard to have multiple separate simulations, perhaps time triggerable?

So, it could go like this:
Simulation 1: Helicopter is pre-fractured, and 90% unyielding and 10% of it is impact. An invisible ball is unyielding.
Simulation 2: Helicopter is almost completely unyielding, and the ground is now an impact object so it breaks up when the helicopter crashes.

Thanks for a fantastic tool! I JUST bought it 5 minutes ago, and was playing with for hours with a friend this last week.
Marty