Droops are deployed on the leading edge of a wing of an aircraft, and they work by changing the camber of the wing.

What are plane droops?

A droop or droop nose is a type of high-lift device found on the wings of some aircraft. They are very similar to leading-edge slats, but with difference that the entire leading edge section rotates downwards.

How do airplane wing flaps work?

Flaps work by moving the trailing edge of the wing downward, which moves the chord line. Without changing the pitch of the plane, flaps create a bigger angle of attack on the wing, and therefore more lift. ... As the flaps get lower and lower, they add parasite drag too.