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Does deploying flaps reduce stall speed?
Flap increases lift and therefore the stalling speed is reduced. However, flap also changes the shape of the wing, and this results in a lower nose attitude at the stall.
When flaps are deployed the stalling speed of the aircraft will?
Your stall speed decreases because the CLMAX of the wing increases with flaps deflected. Deploying flaps increases wing camber and increases both CL and CD at the same AoA and airspeed.
Do flaps decrease drag?
Flaps are used to reduce the take-off distance and the landing distance. Flaps also cause an increase in drag so they are retracted when not needed. The increase in camber also increases the wing drag, which can be beneficial during approach and landing, because it allows the aircraft to descend at a steeper angle.
How does flaps affect the stall speed of a plane?
Your stall speed decreases because the C L M A X of the wing increases with flaps deflected. Deploying flaps increases wing camber and increases both C L and C D at the same AoA and airspeed. Depending on the type of flap, the critical AoA actually reduces: the airfoil with simple flaps deflected stalls at a lower AoA than without flaps.
How are leading edge flaps used to delay stall?
The two main leading edge devices are leading edge slots and leading edge flaps: Slots energize the boundary layer to delay stall by allowing higher pressure air from below to “leak” in a controlled way to the upper surface.
How does deploying flaps change the shape of the wing?
Deploying flaps changes the shape of the wing in a way that increases lift. With more lift, the aircraft can go slower and still have enough lift to stay airborne. That is the same as saying that its stall speed is reduced. Bonus Factoid:
How are slats used to reduce stall speed?
It’s because leading edge devices allow a higher Angle of Attack. The four types of leading edge devices work by pointing the nose of the wing downwards so that at higher AoA there is no flow separation at the upper surface near the nose. Deflecting the slats does not increase C L, the aeroplane must increase AoA to do that.