Airplane Parts

Today we flew from JFK to Los Angeles.  When we were at the gate in New York, I looked out the window and saw this scene, once I zoomed in with my camera.  There are some interesting things going on in this photograph.  At the top left, we see an Airbus 320 tail, then in the middle of the photo, an Airbus 321 winglet, and to the right, an Airbus 320 winglet.  The winglets are mounted on the tips of the wings to make the wings more efficient.  Basically, they prevent the air rushing over the top of the wing, from taking a shortcut and sliding off the tip of the wing, instead of flowing over the full chord.  The 320 winglet is an older version, and the new 321 winglets are the newer version - much larger, and much more efficient.