Boeing unveiled the world's largest twin-engine jet

The prototype of the world's largest twin-engine jet engine 777-9X was produced at Boeing factory in Everett, Washington.

The 777X jet was revealed for the first time on October 3 in the live streaming image from Boeing's factory floor in Everett, Washington, USA. The aircraft is a test version of 777-9X, the first model in the new generation 777 series. When taking off in the sky, this will be the world's largest twin-engine jet, according to CNN.

Once completed, 777-9X will become the widest wingspan in the company's 102-year history (71.7 meters). The winged wing tip alone is nearly 4 meters long with a lock to prevent this part from folding in flight. The wing increases the lift for the aircraft, similar to a giant sail-type glider, which helps 777-9X save 12% of fuel compared to the Airbus A350.

777-9X has a folding wing design to increase lift.(Photo: CNN).

In fact, the US Federal Aviation Administration must draft new regulations exclusively for 777-9X and 777-8X variants. Despite its massive size, the wingspan of 777-9X is not the largest in the market. It is still a bit smaller than the wingspan, the largest passenger aircraft in the world today (79.7 meters) and specialized in launching missiles on orbit (117 meters).

The static test model 777-9X was fully assembled at the Everett factory in September. Although it never took off, the aircraft will undergo nearly a year of ground testing to confirm durability testing. in terms of structure and accuracy in design. Although the aircraft chassis is almost complete, it lacks some parts such as aviation engines and avionics.

Boeing assembled almost completed 777-9X test aircraft.(Photo: CNN).

"Static testing is our opportunity to identify structural design and load-bearing parts of aircraft, ensure final safety products for passengers" , Doreen Bingo, manager of the test program Boeing's 777X, said. "Using standard-sized airplanes, we will apply various load conditions for wings, powertrain, brace and torso."

The suit has been tested with a load of 1.5 times more than the previous design. The fuselage is made of aluminum like most other aircraft, but the wings are made of ultra-light and ultra-durable carbon fiber, which saves fuel. The special treatment process for the set includes using a giant pressure furnace to heat carbon fiber materials.

The plane will undergo a year of testing on the ground.(Photo: CNN).

With a capacity of 350 - 425 passengers, it will go into operation in 2020. Flight tests will begin next year. Boeing said the operating costs of 777-9X are 10% lower than the A350-1000. The range is expected to be over 14,000km, the distance between Dubai and Panama City. Several airlines have ordered 777-9X, including Emirates, All Nippon Airways and Lufthansa.