Found and Explained Official on MSN
Boeing’s propfan 747 that never took off - 747-500
Boeing studied a radical 747-500 powered by large propfan engines instead of conventional turbofans. The design aimed to reduce fuel consumption and operating costs while extending range, combining ...
Bigger than anything before it, the Boeing 747-8 was the final jumbo jet. This documentary shows how it came together.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results