EVERETT, Wash.,
Feb. 28 /PRNewswire-FirstCall/ -- The composite
technology, design and construction of the 787 was proven during a series of
testing scenarios conducted beginning in late 2007 and concluding this week.
The tests were performed on a composite fuselage test section and are part of
Boeing's certification efforts for the 787.
"The tests were very successful -- they couldn't have gone any better,"
said Kevin Davis, 787 fuselage authorized representative and leader of the
testing.
Boeing engineers proved the composite barrel design through a series of
incremental tests that first took the barrel to limit load, a test condition
that simulates the most extreme conditions expected to be experienced in the
life of the airplane.
Next, the test article was taken to 150 percent of limit load -- a
condition called "ultimate load," the level required for certification.
Finally, the team pushed the composite section past ultimate load well
beyond ultimate load to a destruct-condition maneuver beyond two and a half
times the force of gravity.
Testers observed audible indications of damage as the test progressed but
the piece did not reach the level of destruction that had been anticipated.
Boeing engineers now are performing an extensive inspection of the barrel and
analysis of test results.
This robust test program is key to clearing the Dreamliner for first
flight. Some testing on the composite barrel section will continue, but it is
at Boeing's option for additional learning. Additional static testing is
required, and will be conducted, on a full airplane structure prior to first
flight.