Those Shahed drones are too small. I'm just thinking from first principles, if an ultralight plane has a range of 500km and has a 100kg pilot in it which could be subbed for a warhead, you could do an awful lot of damage with hundreds of such things in the air.
Your numbers are way off. Ultralight airplanes don't have ranges anywhere near 500km, nor do they have the payload capacity to carry the necessary sensors and associated electrical generator. Ultralights are also barely faster than surface warships, and are too flimsy to operate in severe weather. Seriously, you guys need to quit watching silly scifi cartoons and do some actual math.
The Sadler Vampire was/is 100 kg something dry, 250 kg loaded and a range of 500km. How much power do you need for sensors anyway? Even with 100 kg for fuel, that's a lot of weight left for warhead and electronics. That's for a straight conversion of a COTS design. I'm sure corners can be cut for something which will only run for a few hours and never fly again.
