The Boeing 777-300ER is only around 8% longer than the largest Boeing 787 Dreamliner, yet its maximum takeoff weight is nearly 38% higher. The difference becomes even more striking when you compare their engines. The 777-300ER measures 73.9 metres long, compared with 68.3 metres for the 787-10. Despite that relatively small difference in length, the 777 can take off weighing up to 351.5 tonnes, against approximately 254 tonnes for the Dreamliner. That’s almost 100 tonnes between two aircraft that might not look dramatically different in size. Much of the difference comes down to what they were designed to do. The 777-300ER was built to carry large numbers of passengers and substantial cargo on busy long-haul routes. The 787, meanwhile, was designed around efficiency, allowing airlines to operate long-distance services with fewer passengers. Their engines reflect that distinction. Each of the 777-300ER’s enormous GE90-115B engines can produce more than 115,000 pounds of thrust, roughly 50% more than the engines fitted to the 787-10, depending on configuration. The 777 also has six wheels on each main landing gear assembly, compared with four on the Dreamliner. Both aircraft have become important parts of modern long-haul aviation, but their specifications reveal just how differently Boeing designed them. The 777-300ER isn’t dramatically longer than the largest Dreamliner. It’s built to lift considerably more weight. #Boeing777 #Boeing787 #AviationFacts