The max speed of some rc quadricopter is what 20 knots?.. im being way generous....
How the hell are these two ever going to tangle unless its the larger aircraft flying at the quadricopter...
If you were going to try and chase /harass/ threaten a full-size aircraft with any kind of RC aircraft there are plenty that are faster, the last thing you would use is a quadrocopter
with anything of any kind of RC aircraft and full size aircraft tangling with each other it’s about as likely as a full-size aircraft & bird strike....
airports try to keep the birds clear from the take of and landing flight path..and same with with RC aircraft .. they have no reason to operate near and airport and certainly not in the landing and takeoff flight path
Hobbyist quadcopter speed record as of 2013 was 120+ kilometer/hr. Two kg all-up weight. Not a totally negligible amount of kinetic energy.