HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Page 1/3  >  >>
Ann R. Thryft
User Rank
Blogger
Re: The big question - Fatigue
Ann R. Thryft   7/3/2013 12:33:40 PM
NO RATINGS
notarboca, I'd be very surprised if Airbus *didn't* do the type of tests you mention. The 15 slides shown in my previous story on the 350, "Slideshow: Anatomy of a Composite-Heavy Jetliner"
http://www.designnews.com/author.asp?section_id=1392&doc_id=264009
are a mere smattering of all the various press releases and announcements made on the many, many steps during this entire process, and many of those represent a ton of different tests. Commercial aircraft must go through a very rigorous testing process, much more extensive than that of military aircraft. We've discussed this, regarding composites, here:
http://www.designnews.com/document.asp?doc_id=235863
and here:
http://www.designnews.com/author.asp?section_id=1386&doc_id=235214
Airbus seems to have learned from Boeing's mistakes.



Rob Spiegel
User Rank
Blogger
Re: Promising news
Rob Spiegel   7/3/2013 8:50:08 AM
NO RATINGS
Good point, Ann. Even though it is old tech that is giving the 787 trouble, someone must be overlooking the old tech. Perhaps they've been overly focused on the new tech.

notarboca
User Rank
Gold
Re: The big question - Fatigue
notarboca   6/30/2013 2:38:48 AM
NO RATINGS
Ann, TJ-- I, too, would like to see composite fatigue results.  Fatigue kills airframe components!  The only way the US Air Force has been able to keep B-52s airworthy is to address this, since the wing flexes about 6 feet with every takeoff and landing cycle.  Quite a maintenence effort.

I doubt Airbus has taken a horizontal stablizer into a test bed and twisted/jerked it six ways from Sunday to see fatigue results.  Most probably rely on computer modelling, but I hope not.

a.saji
User Rank
Silver
Re: Promising news
a.saji   6/29/2013 10:22:19 AM
NO RATINGS
@Murray: Yes sounds like that to me too. You need to provide the fullest support towards industries like aviation since they are the things which carries the industry forward if its right on track with technology. 

Ann R. Thryft
User Rank
Blogger
Re: Promising news
Ann R. Thryft   6/28/2013 11:44:34 AM
NO RATINGS
Yes, I saw that poll. That's the power of bad press. The fact that this is old tech, not new tech, at fault makes me nervous, because that indicates a systemic problem, like one of QA/maintenance. If anything, you'd think those oversight-type systems would be tightened on the 787 by now, not loosened.

Rob Spiegel
User Rank
Blogger
Re: Promising news
Rob Spiegel   6/27/2013 11:19:09 PM
NO RATINGS
Good question, Ann. If it's not new technology, why is there a problem? Also, have you seen the Design News instant poll on whether readers would be willing to fly on the 787?

Ann R. Thryft
User Rank
Blogger
Re: Promising news
Ann R. Thryft   6/27/2013 12:17:39 PM
NO RATINGS
Thanks, Rob. So now it's a brake indicator problem--not exactly new technology. At least the most recent problems have been mechanical, and not related to new technologies. OTOH, one wonders why they happened at all.

Rob Spiegel
User Rank
Blogger
Re: Promising news
Rob Spiegel   6/26/2013 7:16:48 PM
NO RATINGS
Ann, a 787 was diverted for mechanical problems on Sunday:

http://edition.cnn.com/2013/06/23/travel/dreamliner-diverted/index.html

Ann R. Thryft
User Rank
Blogger
Re: Promising news
Ann R. Thryft   6/25/2013 3:03:16 PM
NO RATINGS
Oh no, what happened now?

Rob Spiegel
User Rank
Blogger
Re: Promising news
Rob Spiegel   6/25/2013 3:01:10 PM
NO RATINGS
Boeing has really had its problems, even just this week. It will be interesting to see if Airbus has similar difficulties.

Page 1/3  >  >>


Partner Zone
Latest Analysis
Advertised as the "Most Powerful Tablet Under $100," the Kindle Fire HD 6 was too tempting for the team at iFixit to pass up. Join us to find out if inexpensive means cheap, irreparable, or just down right economical. It's teardown time!
The first photos made with a 3D-printed telescope are here and they're not as fuzzy as you might expect. A team from the University of Sheffield beat NASA to the goal. The photos of the Moon were made with a reflecting telescope that cost the research team 100 to make (about $161 US).
At Medical Design & Manufacturing Midwest, Joe Wascow told Design News how Optimal Design prototyped a machine that captures the wing-beat of a duck.
The increased adoption of wireless technology for mission-critical applications has revved up the global market for dynamic electronic general purpose (GP) test equipment. As the link between cloud networks and devices -- smartphones, tablets, and notebooks -- results in more complex devices under test, the demand for radio frequency test equipment is starting to intensify.
Much of the research on lithium-ion batteries is focused on how to make the batteries charge more quickly and last longer than they currently do, work that would significantly improve the experience of mobile device users, as well EV and hybrid car drivers. Researchers in Singapore have come up with what seems like the best solution so far -- a battery that can recharge itself in mere minutes and has a potential lifespan of 20 years.
More:Blogs|News
Design News Webinar Series
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 20 - 24, How to Design & Build an Embedded Web Server: An Embedded TCP/IP Tutorial
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: 10/28-10/30 11:00 AM
Sponsored by Stratasys
Next Class: 10/28-10/30 2:00 PM
Sponsored by Gates Corporation
Next Class: 11/11-11/13 2:00 PM
Sponsored by Littelfuse
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service