Gulfstream V FSX. Installation. Simply copy the unzipped Gulfstream V folder and all of the subfolders to your SimObjects folder in FSX. Then enter the EFFECTS folder and read the effects. txt file for smoke installation. Flying. The only real thing to note with this aircraft (in FSX) is that the flaps are extreme, and the engines are powerful. No more that 2 notches are needed for take-off or landing with flaps. Rolling with less than 70% fuel will require no power, and some braking.