[andkenneth]

the distinction here is mainly jets vs props.

[stackghost]

Gravel will happily fuck up a prop just as much as a turbine; it's more about ground clearance. The engines on modern airliners are quite low to the ground, which is why they tend to ingest gravel kicked up by the nose gear.

[CGMthrowaway]

What's the ground clearance of a flying piece of gravel! (in a gust of wind for example)