Originally Posted by
Rob2160
Like this.
https://www.youtube.com/watch?v=L1jZvlFmqQU
I have personally experienced four bird strikes while flying jet aircraft, 1. did no damage to a wing leading edge, only blood stains, 2, No damage to a windscreen, it happened at low speed on landing, 3 and 4 went into engines causing minor damage to the compressor blades which needed replacing.
We also had an incident where the engine ingested several medium size pieces of iron ore gravel - though smaller than the birds, they did far more damage and
the engine had to be replaced.
Hard sharp gravel will damage nearly all of the blades, but likely the engine ran long enough to land. With a sUAV the engine is not sharp and soft metal, not hard carbon steel. I believe the battery would do more damage as it is likely longer than the space between the blades and will toss around till it lines up so that it is lying parallel to the blades. Or it will pass though when the blades cut it. Then the battery acids will damage the blades. Still I doubt this would cause a certified airliner engine to lose all thrust.