What is the effect of molten lithium on turbine blades? (I don’t know, it might be insignificant, but does anyone actually know?) The latest article I can find is in 2014 when the FAA wasn’t mandating any kind of drone collision tests, but at the time it wasn’t seen as a serious problem and since then drone usage seems to have exploded.
The assumption seems to be that bird strike may destroy an engine and the object of preventive design is, basically, to stop loose blades slicing into the fuselage and the passengers; not to make the engine bird proof.
