Hail is far less than 8lb and can crack an airplane's windshield. It's a function of momentum and density. If the drones are designed to be fragile when impacte

Hail is far less than 8lb and can crack an airplane's windshield. It's a function of momentum and density. If the drones are designed to be fragile when impacted, maybe structural damage can be avoided, but sucked into an engine all bets are off.