At the AUVSI 2015 in Atlanta, starting Tuesday next week, 3W-Interantional will present for the first time their new 3-cylinder engine 3W-102 STR 3 FI. The cooling of the engine has been improved on the newly developed engine. The engine has been fitted with a ring header, as a result only one muffler is required. The consumption of the engine has been reduced through the saving in weight.