posted on Oct, 12 2017 @ 12:04 PM
a reply to: ThePeaceMaker
Yeah, the flaps provide more lift at slower speeds. For most takeoffs, aircraft don't go full flaps, they usually set some portion of full flap
deflection, mostly because of how much more drag is induced by the flaps.
And yes, they change the shape of the wing giving a longer chord length, which usually equates to more lift. Because a launching aircraft is pretty
heavy, they need to keep drag and thrust optimized for takeoff.
For landings, max flaps are usually OK because of the energy of the aircraft that can be managed. In many cases, the flaps help to bring the aircraft
down to speed with the increased drag.
A no-flap takeoff will generally take more runway to get airborne and require higher speeds, thus making it kind of unsafe.