Why Is Boeing's Delayed 747-8 Air Force One Program $2 Billion Over Budget?
It will be more costly than expected due to a time-consuming modification process, supply disruptions, and other challenges.
来自MSN2 个月
How Fast Is The Boeing 747 Compared To Other Quadjets Throughout Aviation History?
The Boeing 747-8 has a cruising speed of Mach 0.86 ... 0.8. The aircraft is powered by four Rolls-Royce Trent 500 turbofan engines with 57,000 pounds of thrust each. It is quite obvious who ...