Impact testing
Advice please,
What/which formula is used for certification of aircraft structures impact forces in the following cases?
1. Birdstrike on windscreen
2. Ice impact from propellor shed ice?
FAA or EASA, not fussy, if you have a reference for same all the better.
Trying to establish impact on forces involved from external impact of something like an SLR or LiON battery pack.