To be precise, the leading edge flaps on Cf-18, HAL Tejas, Sukhoi 57, Boeing 727 and Boeing X-32 are not vortex generators. They are merely leading edge flaps that droop to increase wing camber. Increased wing camber increases lift. They are easy to identify by their hinges at the REAR of the LE flaps.Cool video. Apparently the nickname of the plane was ‘Monica’, on the account of the large intake…
im not sure I understand how the LE vortex generators enable a flatter approach. My understanding is that the f-18 LE vortex generators enable high AOA because the vortex helps keep the flow attached to the top of the wing. The facetmobile needs a high AOA for slow approach and decent descent rate.
OTOH Kasper's vortex generators hinge at their leading edge so that they rise more like spoilers. Kasper tailored his LE spoiler sto generate predictable span-wise vortexes that further decreased low pressure on the top skin.
Master Corporal Rob Warner, retired CF-18 wrench-bender.