Here the efficiency is (L/D)². The (L/D)² of NPW is about 1/2 the (L/D)² of a double-skin foil kite.
It’s a parameter. Airspeed is another parameter.
Here the efficiency is (L/D)². The (L/D)² of NPW is about 1/2 the (L/D)² of a double-skin foil kite.
It’s a parameter. Airspeed is another parameter.