ok... the hard way....
assume fairly close elliptical planform
A = semi-major axis = 153/2 = 76.5
B = semi-minor axis = 12
wing area = 1/2 ellipse area = (Pi*A*B)/2 = 1442 in sq = 10 ft sq
5kg = 11 lbs = 176 oz = 17.6 oz/ft
sucker is going to be fast. can it thermal at 17.6... hmmmm....
Originally Posted by G Norsworthy
Weight depends on the day but the intent is to fly at full all the time if we can.