View Full Version : 737 fins??
jet2impress
10th Feb 2005, 10:40
Hi,
Is anyone able to tell me what the 'fins' are on some 737's located between the horizontal stabilizer and the rudder? These can clearly be seen in the picture below:
http://www.airliners.net/open.file/759432/L/
Thanks!
Sky Wave
10th Feb 2005, 11:32
At a guess I'd say it was the APU intake/Outlet. The fins are probably a grill which closes when the APU is switched off.
jet2impress
10th Feb 2005, 11:34
Hi,
Its not the APU air intake, its well above the intake above the horizontal stabilizer, next to the rudder. There are 4 of these on either side.
NWSRG
10th Feb 2005, 12:17
What you are looking at are Vortex Generators. You will also see them on the top surface of some wings.
They are used to manage airflow. I'm not sure, but I think in this case, these ones are used to 'clean' the airflow departing the tail of the aircraft, thus reducing drag.
jet2impress
10th Feb 2005, 12:37
Thanks for that NWSRG. I will be able to sleep at night better now! lol
:D