I do not think you would need a damage model for a tree: I believe it would just be necessary to know the height of the tree, the height of the A/C and you just have to cut your tree in say three parts:
- height of A/C in the upper part of the tree = big noise, everything OK (believe me I experienced that first hand with a PA-25!); if two trees or more, the flight stops right there, not necessarily with a boom...
- height of A/C in middle part of tree (this would be actually a very small part, and maybe not even existing) = big hole equivalent to 20 mm explosion, consequences on handling, still flyable with skill...if two trees or more, boom
- height of A/C in lower part of tree: boom
Add in the picture coefficients to take in account the nature of trees (pine not equal to oak for that matter!) and you could be done...
Even a simple separation in two zones on the tree, without the complexities as described above would add a lot to immersion!
JV
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