Video - B-777 wing load test at Boeing
11-20-2008, 06:43 AM
#1
Gets Weekends Off
Thread Starter
Joined APC: Jan 2006
Position: ANC-Based MD-11 FO
Posts: 328
Video - B-777 wing load test at Boeing
A short video of Boeing doing the wing load test on the B-777. The wing failed at 154% of design load. The engineers expected it to go at 150%. Does anyone remember where the A-380 wing failed during its load test? I seem to recall it was barely over 100%. This was done back in 95 but I just found it and thought that since FDX is getting this plane next year, it might be ineteresting to see again.
YouTube - Boeing 777 Wing Load Test
YouTube - Boeing 777 Wing Load Test
11-20-2008, 07:13 AM
#2
Gets Weekends Off
Joined APC: Mar 2006
Position: B767 FO
Posts: 421
It is amazing to see that.
The wings are required to demonstrate 1.5 times (150%) the normal load to get certified. If I remember correctly the A380 was short by a little, less than 5%. I would assume that they had to make changes, but don't recall it being discussed after the initial failure.
It makes me sort sick to see the wings bent up like that.
The wings are required to demonstrate 1.5 times (150%) the normal load to get certified. If I remember correctly the A380 was short by a little, less than 5%. I would assume that they had to make changes, but don't recall it being discussed after the initial failure.
It makes me sort sick to see the wings bent up like that.
11-20-2008, 07:15 AM
#3
Gets Weekends Off
Joined APC: Sep 2006
Posts: 1,336
Interesting, the video highlights Alan Mulally who was representing Ford this week before Congress with hat in hand. Seems his wing did better than Ford. Sure would have liked the economy to have been able to withstand 154% of anticipated stress
http://en.wikipedia.org/wiki/Alan_Mulally
http://en.wikipedia.org/wiki/Alan_Mulally
11-20-2008, 07:16 AM
#4
Line Holder
Joined APC: Jul 2007
Posts: 76
You beat me to it OKLATEX. I am no engineer but I think 150% is a target for engineering and the A-380 came in at like 145% which is still good for certification. What this video does is confirm my feelings that Boeing is superior in engineering construction and design.
11-20-2008, 05:55 PM
#6
Gets Weekends Off
Joined APC: Aug 2006
Position: B777 Captain
Posts: 566
What Boeing did was impressive only because it showed that with the use of computers you can get so close to the minimum FAA limits. Don't want to risk putting an extra pound into that strength if you don't need to!
Older designs, including the MD-11, were able to go over 200% during the same type of testing. Why? Because they did not have computers capable of being that accurate, so they overbuilt it.
Older designs, including the MD-11, were able to go over 200% during the same type of testing. Why? Because they did not have computers capable of being that accurate, so they overbuilt it.
Thread
Thread Starter
Forum
Replies
Last Post
Dan64456
Pilot Health
19
09-15-2008 03:35 AM
