The Pyramid

[Windy_Skies]

Related, Pierre’s comment has what looks like good research.

Low radius loop

Page 12, from the table 2: Flexible wing Lift-to-drag ratio 6 Rigid wing Lift-to-drag ratio 20 On this table, the Max flight circle radius is about 5 wingspans for both rigid and flexible wings. I think things are perhaps different. Also take into account the tether drag. Radius of Turn - SKYbrary Aviation Safety : Radius of turn is dependent on both airspeed and bank angle. The radius of turn at any given bank angle is directly proportional to the square of the airspeed. …

@Rodread

I do not want to constrain daisy kite rotors to short radius paths. Centripetal acceleration and bank angle encourages expansion of the rotor. This expansion should be exploited to dynamically increase swept area per unit kite as wanted.

I was thinking if you fly a control line plane on a long tether (with the tether attached to one of the wing tips), if you fly it faster and increase the lift of the plane, it would fly in a narrower and narrower cone above your head. So then the lift of the plane would increasingly contribute to narrowing the cone and less toward fighting gravity, reducing tether tension and… But you still have the propeller so I don’t know anymore, or if it is a perfect analogy.

The analogy would be for what would happen if instead of attaching your tether to the center of lift of your kite, you attach it to one of your wing tips, like Bladetips’ animation shows.