Mig-35 question

[PlanesPictures]

what is this?

 

[fightingirish]

A lift enhancement device like Krueger flaps.
Link and source:

What is the purpose of these movable panels on the MiG-35?

The MiG-35 has movable panels on the LERX (leading edge root extensions). There are a number of images around the web showing these panels deployed during slow flight and retracted otherwise. When...

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