Complex sentence: The aircraft has adjustable leading-edge vortex controllers (LEVCONs) designed to control vortices generated by the leading edge root extensions, provide trim and improved high angle of attack behaviour, including a quick stall recovery if the thrust vectoring system fails.
Split into simpler sentences: The aircraft has adjustable leading-edge vortex controllers (LEVCONs) designed to control vortices generated by the leading edge root extensions. The LEVCONs can be used for trim and improving high angle of attack behaviour, as well as allowing quick stall recovery if the thrust vectoring system fails.