How about I just hoist 100,000 ball bearings into the air and drop them in front of the F35?
But if you're committed to the fast drone idea then get one. I think they're going about 450 mph now which ought to give you enough time to maneuver in front of the f35.
So again, how are you going to get these 100k ball bearings up to 20k AGI? Your slow, cheap drones are just going to loiter up there and hope an F-35 flies into their web?
It's not like the air forces of the worlds would be ignorant of this "surprise" tactic. And the methodology of targeting an F-35 with a cascade of ball bearings is conveniently left out of your scenario.
Yeah, so, what's your point?
It's obviously not a well developed plan. Nevertheless, considering the costs of repair, sortie interval, loiter time, all of the other limits imposed by having so few very units of expensive aircraft opens them up to novel attacks. As to how to get the things to stay up there? Balloons are one way, large solar panel wings which could be jettisoned is another. Such a plan might not even have to work well, it might be enough to cause decision makers to keep the fighters grounded.
Just what do you think a SAM is? There's a hell of a lot of volume in the atmosphere.