Another general question: Why are these types of vortex generators much more common on Boeing than on Airbus aircraft? It seems that almost all Boeings (except possibly the 747; I'm not sure about the 787) have many of these protruberances.
I was on a KLM 737-400 a couple of weeks ago, seated just in front of the wing, and counted 26 vortex generators on each wing and another 4 or 5 on the inner side of the engine cowl. There are also 4 on each side of the rear fuselage between the vertical and horizontal stabilizers, for a total of about 70.
737tdi From United States of America, joined Sep 2007, 464 posts, RR: 0 Reply 1, posted (2 years 4 months 3 weeks 5 days 8 hours ago) and read 2968 times:
The vortex generators just below the windshield are there to reduce noise. The vortex generators on the wings are a totally different beast. They are there to direct airflow, either away/or towards a flight control, or to maintain the boudary flow/direction on the wing. On the wing it's all about lift and if a little generator helps? it's applied. You will probably get many more answers but this is the basic.
bohica From United States of America, joined Feb 2004, 2407 posts, RR: 0 Reply 2, posted (2 years 4 months 3 weeks 5 days 4 hours ago) and read 2912 times:
I just noticed something in the pictures that got my attention. The planes without the vortex generators came with eyebrow windows. In the picture of the GOL plane, they have been plugged up. The ones with the vortex generators have no sign of ever having eyebrows. When Boeing started building the 737NG without the eyebrow windows, did they start adding the nose vortex generators at the same time?