Author Topic: New tubofan nacelle revealed today at the 787 roll out (Read 624 times)

Ripsnort · « **on:** July 08, 2007, 07:06:21 PM »

Pretty neat.

For the first time, the engine nacelles will have scalloped rear-edge chevrons. The chevrons, developed by the 787 nacelle manufacturer Goodrich as a result of research carried out by Boeing with GE Aviation and Rolls-Royce, will cut down greatly on the noise made by fast-moving air exiting the engine shearing against the external air. This GEnx engine, mounted on GE's 747 test aircraft, clearly shows the nacelle chevrons.

bj229r · « **Reply #1 on:** July 08, 2007, 07:22:00 PM »

PLUS, ya can paint Flying-Tiger teeth-looking stuff around them:aok

nirvana · « **Reply #2 on:** July 08, 2007, 07:51:52 PM »

Neat looking design. Thanks for the explanation as well, usually people say something and just leave it without further explanation.

Also what Bj said.

Chairboy · « **Reply #3 on:** July 08, 2007, 07:56:09 PM »

How long until car spoilers show up with those same serrations in the back, based on this?

nirvana · « **Reply #4 on:** July 08, 2007, 07:58:56 PM »

Depends, will it be for aesthetics or for performance? Aesthetics I'll give it a few months, performance a few more months.

Chairboy · « **Reply #5 on:** July 08, 2007, 08:02:20 PM »

For quasi-speed, of course, like most spoilers.

For the same reason I put a Type-R sticker on my RV, to make it go faster!

Mark Luper · « **Reply #6 on:** July 08, 2007, 08:03:44 PM »

Quote

Originally posted by Chairboy
How long until car spoilers show up with those same serrations in the back, based on this?

Considering the fact that the chevrons were placed there to reduce noise of air shearing at the aft end of the nacell, I can't see that it would be beneficial to place the same on car spoilers since the noise generated by a car spoiler would tend to be low enough to not be an issue in traffic. Normal traffic, that is.

Mark

Chairboy · « **Reply #7 on:** July 08, 2007, 08:13:45 PM »

(Makes "airplane whooshing over head" gesture with sound effects)

Mark Luper · « **Reply #8 on:** July 08, 2007, 08:31:54 PM »

Quote

Originally posted by Chairboy
(Makes "airplane whooshing over head" gesture with sound effects)

I answered your question as it was written. No need to whoosh away

Mark

Viking · « **Reply #9 on:** July 08, 2007, 09:18:37 PM »

Pretty cool!

eagl · « **Reply #10 on:** July 08, 2007, 10:26:01 PM »

Mark,

It doesn't have to actually add performance in order to end up being used as decoration on cars... The exaggerated wings, chin spoilers, and huge exhaust tips are more than enough evidence.

I'm with nirvana... If Boeing plays up those scallops at all in their ads (which they should), it's very possible that ricers will start taking hole punches to their huge rear spoiler wings in order to make them look scalloped just like the most modern airliner in the world. For a lot of those guys, it's all about looking cool/fast, not about actually being fast.

Chairboy · « **Reply #11 on:** July 08, 2007, 10:31:19 PM »

Well said, Eagl, that's what I was going for.

Vulcan · « **Reply #12 on:** July 08, 2007, 11:14:32 PM »

Looks like a cookie cutter tbh.

Mark Luper · « **Reply #13 on:** July 08, 2007, 11:15:28 PM »

You guys are right, of course. It just didn't dawn on me at first. Guess it just whooshed over my haid

Mark

clerick · « **Reply #14 on:** July 09, 2007, 12:17:20 AM »

Quote

Originally posted by Chairboy
How long until car spoilers show up with those same serrations in the back, based on this?

Two weeks....