Hi All
I was watching a video of the A4 operating off HMAS Melbourne on Youtube and noticed that as the catapult fires, the leading edge slats(?) very quickly retract.
Link follows and you can see this happen at 4:30 or thereabouts.
Can anyone educate me on what initiates this? Is it airflow over the wing? I imagine it isn't throttle related as I'd assume that full throttle would be in place well before the moment of launch.
Thanks in advance,
Flyer