Yesterday I was watching "Mayday" while doing other things, and caught a glimpse of a diagram that I think was them pretending to show how flaps and slats work. I broke out in laughter. It was the usual "LAMINAR AIRFLOW CONTAINS SKYHOOKS"!
They showed flaps and slats extended without angles, and no airflow UNDER the wing. Only airflow OVER the wing, and a force arrow on the underside pushing up!
The flaps and slats supposedly work by lengthening the airflow over the wing.
Flaps obviously increase the angle of attack of a wing, and so increase the deflection of UNDERSIDE airflow into a downdraft, producing lift.
Slats and droops present a smoother leading edge to the air at high pitch angles. That is an example of their purpose. A droop does not lengthen the wing cross-section, but produces less drag.
These diagrams almost always show the airflow going straight back from the trailing edge of the wing, as this one did. Does it occur to no one that this requires empirical verification with your own eyes?
"Mayday" itself has shown one of these diagrams, except with both top and bottom flows—a "Bernoulli principle" explanation in that case, instead of a "Coanda effect" explanation—then immediately shown an actual flight experiment with smoke.
YOU COULD SEE THE DOWNDRAFTS BOTH TOP AND BOTTOM!
There was a downdraft at the trailing edge, primarily on the underside of the wing.
YOU COULD SEE IT.
It's all lies. Everyone knows aircraft are kept aloft by paperwork and propelled forward by vast quantities of cash.
Obviously, cash can be exchanged for more paperwork if one needs to gain height.
🤪
#aviation #aerodynamics #airplanes #aeroplanes #aircraft #flying #fluidDynamics #bureaucracy
@doboprobodyne Those cheap rubber band balsa airplanes I had as a kid had FLAT wings, by the way, so could not possibly have flown by "curved laminar flow", whatever one's bogus explanation. Neither does a delta wing plane such as Concorde when taking off.
The usual airfoil is a very efficient wing—but all wings, including that of a hovering bat, obviously MUST produce a downdraft. Else the student has to go back to school to learn Newton's laws of motion. :)
Barry Schwartz 🫖
doboprobodyne