Engineers Say Dreamliner May Not Fly This Year | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date

AMA Drone Report

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday

Airborne-Thursday

Airborne-Friday

Airborne-Unmanned w/AUVSI

Airborne On ANN

AMA 07.20.17

Airborne 07.17.17

Airborne 07.18.17

Airborne 07.19.17

Airborne 07.20.17

Airborne 07.21.17

Airborne-Unmanned 07.18.17

Airborne-YouTube

AMA 07.20.17

Airborne 07.17.17

Airborne 07.18.17

Airborne 07.19.17

Airborne 07.20.17

Airborne 07.21.17

Airborne-Unmanned 07.18.17

NEW!!! 2017 AirVenture Innovation Preview -- YouTube Presentation / Vimeo Presentation

Fri, Jul 24, 2009

Engineers Say Dreamliner May Not Fly This Year

Structural Problems More Difficult To Repair Than Originally Thought

Two engineers with knowledge of the situation say that the structural issues with the B787 Dreamliner are more complex than originally described by Boeing, and the maiden flight of the aircraft could still be months or more in the future.

The engineers told The Seattle Times that the issue involves an area where the wing joins the fuselage, caused by high stress loads at the ends of the stringers in the upper skin of the wing. As the wings flex during flight, the stress loads could cause the composite stringers to delaminate from the skin. This condition occurred during wing flex tests.  The engineers said while this is not likely to lead to a catastrophic failure of the wing, it would require constant and expensive monitoring and repair over the aircraft's life.

The repair as described to the paper by the engineers is extensive, and involves someone inside the wing of the aircraft first relieving and then reinforcing the stress points. They said the repair would need to be completed on the non-flying test aircraft before proceeding on to the flight-test models.

The delamination showed up during the maximum load test of the wing, which the engineers said is 50 percent higher that is expected in normal operation, though it is unknown if it began at lower stresses and was masked by titanium components in the wing. The repair will have to be monitored at every stress level during subsequent tests.

 

The engineers told the Times that Boeing's focus now is on repairing the current Dreamliners so testing can resume, and that it has not been determined at what point in the production process a permanent fix would be implemented.

FMI: www.boeing.com

Advertisement

More News

Airborne-Unmanned 07.18.17: Moon Express, DJI Drone Hacks, Airdog Sports-Drone

Also: Ride Sharing, Indago UAS, S Korean Tiltrotor UAV, Drone Simulators, Airborne-Unmanned This is SERIOUS Unmanned Vehicle technology! Moon Express, one of the competitors in the>[...]

It's ALIVE! 2017 AirVenture Innovation Preview Program Now Available

Get The Inside Details On THE Most Exciting NEW Innovations And Product Announcements From OSHKOSH 2017... The staff of EAA and the Aero-News Network were pleased to release the la>[...]

AMA Drone Report 07.20.17: FAST Drones, GeoFencing, Certified Drone Photographer

Also: SureFly Helicopter Concept, 'Design a Drone', Raleigh v Drones, Aero-TV: AMA's David Mathewson The Drone Racing League recently tested the fastest racing drone, and set the G>[...]

Airborne 07.21.17: TruTrak Completes STC!, SureFly Helicopter, TDRS-M Satellite

Also: Oshkosh Airshows!, M400 Skycar Baloney, Apollo-Era Computers, Rockwell Collins TDR-94Ds, CAAS-EASA, Vega Prepared TruTrak Flight Systems has completed the STC of the Vizion a>[...]

Airborne 07.20.17: ForeFlight Scout, Airbus SAGITTA UAV, Privatization Fight

Also: NASA P2006T, Robert Sumwalt, First FL Legacy 500, Tuskegee Airmen, New RAF Trainer, VFA-115 ForeFlight has announced the availability of Scout, a portable, dual-band ADS-B re>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2017 Web Development & Design by Pauli Systems, LC