Aces High Bulletin Board

General Forums => The O' Club => Topic started by: Ripsnort on July 08, 2007, 07:06:21 PM

Title: New tubofan nacelle revealed today at the 787 roll out
Post by: 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.

(http://a52.g.akamaitech.net/f/52/827/1d/www.space.com/images/070705_genxchevronscloseup_02.jpg)
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: bj229r on July 08, 2007, 07:22:00 PM: PLUS, ya can paint Flying-Tiger teeth-looking stuff around them:aok
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: nirvana 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.:aok
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: Chairboy 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?
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: nirvana 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.
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: Chairboy on July 08, 2007, 08:02:20 PM: For quasi-speed, of course, like most spoilers. :D

For the same reason I put a Type-R sticker on my RV, to make it go faster!
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: Mark Luper 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
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: Chairboy on July 08, 2007, 08:13:45 PM: (Makes "airplane whooshing over head" gesture with sound effects)

:D
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: Mark Luper on July 08, 2007, 08:31:54 PM: Quote
Originally posted by Chairboy
(Makes "airplane whooshing over head" gesture with sound effects)

:D

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

Mark
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: Viking on July 08, 2007, 09:18:37 PM: Pretty cool!
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: eagl 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.
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: Chairboy on July 08, 2007, 10:31:19 PM: Well said, Eagl, that's what I was going for.
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: Vulcan on July 08, 2007, 11:14:32 PM: Looks like a cookie cutter tbh.
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: Mark Luper 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 :D

Mark
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: clerick 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....
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: FBplmmr on July 09, 2007, 05:24:26 AM: Hard boiled egg...mmmm
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: john9001 on July 09, 2007, 07:38:33 AM: the batmobile had trailing edge scallops.
Title: New tubofan nacelle revealed today at the 787 roll out
Post by: eskimo2 on July 09, 2007, 12:36:35 PM: Yea, this "ricer" was doing that as far back as 1987:

(http://hallbuzz.com/good_old_days/cars/batmobile.jpg)