There's an old joke about testing how well a train windshield can withstand an impact from a chicken. The joke goes on about firing a frozen chicken from a canon onto a train windshield. But the chicken goes through the windshield and into the conductors compartment. Thus, possibly killing the conductor/engineer of the train. Then the company writes back to NASA and says that the windshield cannot sustain the impact. Whereas, NASA writes back, "Thaw the chicken." ----- That's the punch line of the joke... Well, The MythBusters took on this task to see if there was any truth to the joke.

As it turned out, The MythBusters proved that a thawed chicken will do MORE DAMAGE to a windshield than a frozen chicken would.

Same applies to this poll. With several very hard components (battery and electric motors) in a Quad Copter, it's not unreasonable to assume that significant damage would be done to a turbine if one of these were ever ingested.

Bottom line ... None of us would want to (or could afford to) pay for the repairs to a turbine engine that one of these quad copters would cause.