Plagiarized China Wuzhen-7?Boeing’s next-generation aircraft and the U.S. military’s future drones both adopt China’s first layout | Blog post

According to the plan, Boeing will build, test and fly a full-scale demonstration aircraft in the 2020s, with an investment of more than US$1 billion. The aircraft, currently called the “Sustainable Flight Demonstrator” (SFD), is primarily a test of the transonic trussed wing (TTBW) concept.

According to Boeing’s vision, in order to further reduce air resistance and increase lift, this future airliner will use ultra-long and ultra-thin wings, but limited by the strength of the material, a support structure must be used in the middle of the wing. So Boeing drew on the design concept of old-fashioned biplanes and innovatively proposed the TTBW concept, which is to connect another pair of shorter wings in the middle of the wing. “As a result of this design, the aircraft will have less drag, so it will be much more fuel efficient than conventional airliners, reducing fuel consumption.”

The nacelle of the Boeing 737 MAX is very close to the ground.

American aviation technology experts also claimed that this is a “revolutionary design” that will “make commercial airliners more fuel-efficient by reducing drag.” Even compared to today’s most efficient single-aisle airliners such as the Boeing 737 MAX or the Airbus A320neo family, a single-aisle airliner in the TTBW configuration can save up to 30% in fuel burn.

At the same time, its upper wing is located on top of the fuselage, and there is enough space under the wing to accommodate a larger-sized engine. The reason why the tragic crash of the Boeing 737 MAX is that its wings are located in the lower part of the fuselage, and the space under the wings is limited. It was improperly designed to accommodate the large-diameter engine when compromising.

Boeing estimates that global demand for single-aisle aircraft will increase by 40,000 between 2035 and 2050. NASA claims that the SFD project aims to revolutionize the way people travel in the next few decades.

It’s just that the United States has boasted so much about the wing design of this future airliner, but it has actually been used in Chinese aircraft long ago. The Wuzun-7 large unmanned reconnaissance aircraft, which will be officially unveiled at the Zhuhai Air Show in 2021, is the world’s first aircraft with a diamond-shaped wing aerodynamic layout.

China’s non-detection-7 UAV has been officially installed in the army.

According to the introduction of AVIC, the official name of this layout is the “Φ” type connecting wing aerodynamic layout, which can greatly improve the structural strength and stability of the wing with a large aspect ratio, and reduce the overall weight and flight resistance.

Don’t underestimate this innovative aerodynamic layout design. AVIC proudly declares that “its technology is too advanced, and companies with weaker technical strengths can’t do it at all.” According to reports, although the traditional ultra-long aspect ratio wing can provide Large lift, but high structural strength requirements, very difficult to manufacture. The diamond-shaped joint wing design not only enhances the structural strength of the wing, but also is equivalent to being equipped with two pairs of wings, which has the advantages of high lift characteristics, strong maneuverability, and low flight resistance. In addition, in the case of providing the same wing area, the wingspan of the aircraft adopting the joint wing design is shorter, the structural weight is smaller, the standard of the takeoff and landing runway can be greatly reduced, and the requirements for the airport are lower, so it can be used more widely.

It is precisely because of these advantages of the joint-wing design that the X-type UAV, which is being secretly developed by the US Advanced Research Projects Agency, which is known for developing advanced technologies, also adopts a similar layout. The US “Defense News” said on the 20th that the aircraft has entered the stage of wind tunnel testing and is expected to achieve its first flight as early as 2025. Judging from the wind tunnel test model of the UAV, it is also very similar to the PLA’s Wuzan-7 unmanned reconnaissance aircraft.

US “Defense News” reported.

However, the American media, which is known for its double standards, never mentions the China Wuzhen-7 when it introduces the diamond-shaped joint-wing design of the new model, but only praises the “innovative development” of American companies.

If we apply the traditional bandit logic of the American media, after China took the lead in developing and equipping a diamond-shaped joint-wing design aircraft, whether it is NASA, Boeing or DARPA, they launch new models with this design, it can be said that they are copying China Wuzhen-7 is even likely to steal China’s advanced technology.

The mainland WeChat public account platform “Airspace Power” commented that no matter what, the United States has indeed begun to lag behind in breakthrough innovations in advanced technology, especially in the military in recent years. Not to mention the strategic obsolescence of hypersonic missiles, the US Navy’s DDG(X) next-generation destroyer was directly ridiculed by the Western media as a copy of China’s Type 055 10,000-ton large-scale drive, and now it is beginning to follow China’s pioneering design in the design of a new generation of aircraft The diamond-shaped wing layout, these situations are making the United States increasingly anxious but helpless.