To make the Rafale from "Fly Free Studio" compatible with FSX/Acceleration aircraft 
carriers add the following sections to the end of the "aircraft.cfg" file:

[TailHook]
tailhook_length = 5
tailhook_position = -9, 0, -1
cable_force_adjust = 1

[launch_assistance]
launch_bar_pivot = 17.0, 0.0, -1.0
launch_bar_lug = 17.0, 0.0, -4.5