"The maximum weight to wing span squared w/b squared ) does not exceed >3.0 kg/ma (0.62 lb./ft squared )" > >http://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_21.17-2A.pdf +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Chris, I checked the web site and couldn't find info on the KR1-B wing span. Here is the way I read the formula: For sake of example let's say the wing span is 27 feet and the airplane weighs 450 pounds. 27 X 27 = 729 square feet. 450 pounds / 729 square feet = .617 lb/sq ft. That just meets the requirements.\ You would need the actual numbers to use as a building target , i.e, weight to wingspan. Larry Flesner
