The Boeing 777 University of Southampton（波音777南安普顿大学）.pdf

estled between the 767 and the used extensively in interface areas. N747 in terms of size, the Boeing In addition, titanium replaced many 777 is the world’s largest twin- steel components in the landing gear engine airplane. It was initially con- and engine strut area in an effort to ceived as an enlarged version of the reduce weight and improve corro- 767, but it grew to 85% of the 747 in sion resistance. actual size, and sports a wingspan Although structural materials re- of nearly 200 feet and a fuselage ap- ceive the most attention, it is impor- proximately 11 feet in diameter. Its tant to note that the 777 also paved passenger seating and range combi- the way for a wide variety of non- nation put it in a unique niche that structural advanced materials. Sig- has allowed development of a gen- nificant material applications in- eration of stretch and range variants. cluded the introduction of improved To enable such a large twin- The Boeing passenger windows, and dust engine airplane, Boeing had to covers more resistant