mpenguin1
Well-Known Member
http://www.businessweek.com/magazine/content/05_25/b3938037_mz011.htm
So Boeing is able to guarantee customers that maintenance costs will be 30% lower than for aluminum planes.
After just six years in service, a normal plane undergoes a meticulous and costly check for corrosion. The composite 787, in contrast, may remain in service for 12 years before its first structural test, resulting in 113 additional flights.
One metal barrel requires some 1,500 sheets of aluminum held together by nearly 50,000 rivets. With plastics, the number of fasteners drops by 80%.
Once the Dreamliner's barrels, wings, and other parts are ready, Boeing hopes to assemble each 787 in just three days, down from 11 days for the 737.
Improvement on passenger comfort, the passenger cabin to withstand higher pressurization -- equal to the air pressure at an altitude of 6,000 feet instead of the usual 8,000 feet. So it's easier to control cabin temperature, humidity, and ventilation.
So Boeing is able to guarantee customers that maintenance costs will be 30% lower than for aluminum planes.
After just six years in service, a normal plane undergoes a meticulous and costly check for corrosion. The composite 787, in contrast, may remain in service for 12 years before its first structural test, resulting in 113 additional flights.
One metal barrel requires some 1,500 sheets of aluminum held together by nearly 50,000 rivets. With plastics, the number of fasteners drops by 80%.
Once the Dreamliner's barrels, wings, and other parts are ready, Boeing hopes to assemble each 787 in just three days, down from 11 days for the 737.
Improvement on passenger comfort, the passenger cabin to withstand higher pressurization -- equal to the air pressure at an altitude of 6,000 feet instead of the usual 8,000 feet. So it's easier to control cabin temperature, humidity, and ventilation.
