I completely disagree with the other reply to your post. Keep in mind you said drone and not quadcopter. You could very easily buy a ready to run flying wing [

I completely disagree with the other reply to your post. Keep in mind you said drone and not quadcopter. You could very easily buy a ready to run flying wing [1] with a 30 minute flight time out of the box for just $90. A flying wing is more more suitable for gas or jet A powered motors as the natural lift of the airframe shape keeps it up in the air and balanced. This design scales up linearly (see the B-2 bomber.) I've hypothesized that a dirigible filled with helium or hydrogen could potentially stay up for days or weeks if you had a full carbon composite airframe with a well sealed mylar skin. Lift capacity wouldn't be as great but it's still a fun thought exercise. [1] https://hobbyking.com/en_us/phantom-fpv-flying-wing-epo-airplane-1550mm-v2-kit.html https://hobbyking.com/en_us/phantom-fpv-flying-wing-epo-airp...