An efficiency greater than 22 in the arc of 3 degrees, a minimum vertical speed of 0.81 m / s,
a landing speed still manageable,
combined with a classic always a great choice of loading and wingspan
involving NRe finally aerodynamically convenient,
make a choice of 3.2m Swift hardly debatable.
The profile AB339-
compared to the S6061 that does not require presentations.
Available in the download section the polar dynamics of this project
also with S6061, for a possible comparison.