"considering the likely outcome of a quadcopter's entrance into a jet engine at 700ft above ground level"
I'd actually be interested to know how a jet engine would cope with a quadcopter going into it. Don't they test engines for resistance to consuming birds etc? Obviously a quadcopter is potentially a bit more solid than a bird but not substantially so in most cases.
Sounds like a job for Mythbusters/Braniacs etc.