Originally Posted by
YVR Cockroach
Note the engine cowling in the 2nd and 4th photos. The "teeth" are supposed to reduce noise quite significantly (a similar design was tested on a 777 engine).
They may reduce noise, the main reason for their selection was fuel economy. For that same reason the engine cowls will all be painted the same color on 787s
can't wait to see it in the air ^^