My September 2017 visit to GP Gliders
"And what are all the changes? You can't easily modify already existing gliders for a much higher all up weight, just by writing it down somewhere; it needs to be stronger, for instance thicker spar caps"
Maybe the goal is not to strengthen the glider but to manage empty weight to make sure minimum operational WL is reasonable (i.e. 45 kg/m2).
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