What does ‘high local surface curvature’ mean with respect to trailing edge flaps?
I’ve been reading up on them, and that came up as one of their disadvantages?
Aviation Stack Exchange is a question and answer site for aircraft pilots, mechanics, and enthusiasts. It only takes a minute to sign up.Sign up to join this community
"High local surface curvature" means greater tendency for airflow separation, which increases drag.
When landing, this can be beneficial to a very "slick" aircraft because it steepens the glide angle and helps control airspeed.
The term "streamlining" refers to smooth gentle curves on aerodynamic surfaces, tending to keep airflow attached. "Laminar" is best for lowest drag.