MxCtrlr From United States of America, joined Nov 2001, 2485 posts, RR: 32
Reply 3, posted (11 years 12 months 3 days 8 hours ago) and read 3930 times:
Actually, BOTH explanations are correct. In some lighting conditions, it is difficult to see if the engine is windmilling, so the stripe on the hub shows that it is spinning.
On the other hand, ANA found that, by drawing one large and one small "eye" on their hubs, they reduced the percentage of bird ingestions dramatically, over just the stripe. Therefore, it serves BOTH purposes.
Freight Dogs Anonymous - O.O.T.S.K.
DAMN! This SUCKS! I just had to go to the next higher age bracket in my profile! :-(
DrJetMech From United States of America, joined Jan 2004, 44 posts, RR: 0
Reply 4, posted (11 years 12 months 3 days 5 hours ago) and read 3881 times:
Both answers are correct. I'm pretty sure it was designed for the birds though. I read an article that stated it made the birds think it was a bigger bird and scare it, thus they would fly away from the AC