Boeing Details Interim Upgrade Studies For 777

[straitman]

Boeing Details Interim Upgrade Studies For 777

Mar 7, 2012


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[TD="class: storyAuthor, align: left"]By Guy Norris[/TD]
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Boeing is evaluating a series of systems, aerodynamic and interior upgrades to the current 777 family at the same time as it aims for potential board approval by year-end for the advanced 777X derivative.

The improvements, ranging from potential drag reduction features and lighter structures and systems to enhanced interiors, are designed to sharpen the 777’s competitive edge while paving the way for a transition to the more ambitious re-winged, re-engined 777X later this decade. The initiative includes leveraging technology developed for the 787 program as well as studies of the potential for retrofitting some elements into the existing fleet.

Possible aerodynamic upgrades include improved seals and gaps, particularly in the wing leading edge, as well as the use of drag-reducing hybrid laminar flow control (HLFC) technology currently under test for possible application on the 787-9. If adopted, the HLFC would be used only on the leading edge of the vertical fin, says 777 VP and chief project engineer Bob Whittington.[/TD]
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[elbarto]

I've often wondered how difficult it would be for manufacturers to convert the skin and internal components to carbon fibre. That would reduce weight significantly.

 

[markis10]

I've often wondered how difficult it would be for manufacturers to convert the skin and internal components to carbon fibre. That would reduce weight significantly.

History has already shown the road to composite construction is littered with issues, the first production aircraft ever made was eventually recalled by the manufacturer and destroyed, with a few examples left in the world including an airframe at Caloundra, the Beech Starship:



And the 787 is the first true large passenger aircraft to be largely based on composite construction, the delays have been significant. If Boeing can make it a commercial success, then composite construction has finally come of age, and you might see more aircraft revisions that incorporate greater than 50% composite materials in their construction.