Can anyone tell me what ARJ21 means?

The new turbofan regional aircraft ARJ21 is China's first turbofan regional aircraft with independent intellectual property rights. It is adapted to the operational requirements of taking off and landing at high-temperature plateau airports in western China and overcoming complex route obstacles. The ARJ21 aircraft has the most spacious cabin among regional airliners, providing passengers with more luggage space and a comfortable riding environment. From the beginning of the design of the ARJ21 aircraft, the life cycle cost (LCC) has been strictly controlled to minimize maintenance costs and improve the economical use of the aircraft. The ARJ21 aircraft has similar flight performance and comparable comfort to the 150-seat mainline aircraft. At the same time, it maintains maximum connectivity in terms of cockpit human-machine interface, maintenance human-machine interface and corresponding operating procedures, thereby reducing airline costs. The cost of pilot replacement training increases the flexibility of aircraft deployment and use. ARJ21 aircraft will also develop in the direction of serialization, with four types of ARJ21 basic models, extended models, cargo aircraft and business jets.

The ARJ21 aircraft adopts a double circular cross-section fuselage with five seats in each row, a lower single wing, and two tail cranes powered by CF34-10A advanced turbofan engines. High flat tail, front three-point retractable landing gear layout. The cockpit adopts a two-person system, the avionics system adopts advanced bus technology, LCD flat panel display and integration, and the conventional mechanical system adopts internationally mature advanced technology. Supercritical wings with larger sweep angles and integrated winglets are used to obtain a higher cruise lift-to-drag ratio, thereby reducing cruise resistance and improving operating economy. Composite materials are used for secondary structures to reduce structural weight.

The ARJ21 project adopts an extensive cooperation approach. Each part of the aircraft body is produced at four domestic aircraft manufacturing plants. Systems such as engines, avionics, and power supplies are all purchased globally through competitive bidding, including many systems. Parts and products are manufactured in China. It is expected that the first ARJ21 aircraft will be officially put into operation in the third quarter of 2009.

The Xiangfeng regional aircraft, first known as ARJ21, is the abbreviation of "Advanced Regional Jet", which is the "new generation of regional aircraft in the 21st century". It is a regional aircraft developed by AVIC Commercial Aircraft Co., Ltd. Except for the aircraft engine provided by General Electric Company, Xiangfeng is China's first regional aircraft that is completely independently designed and manufactured. The first test flight is expected to be carried out in 2008. After obtaining the airworthiness certificate the following year, it will be delivered to customers and put into commercial operation. ARJ21 has four models with different capacities. The passenger model can accommodate approximately 70 to 100 seats. Planning begins in 2002, with mass production expected to begin in early 2009. It was announced on December 20, 2007 that the Chinese name was finally determined to be "Xiangfeng".

The Xiangfeng regional aircraft (ARJ21) is a 90-seat, short- and medium-range regional aircraft powered by a turbofan engine and has a full-seat range of 2,000 nautical miles. In December 2003, the aircraft started manufacturing parts simultaneously in four main aircraft factories in Chengdu, Shenyang, Xi'an and Shanghai, and adopted a new operating mechanism and management model of "off-site design, off-site manufacturing", starting China's first owned aircraft The development and manufacturing process of civil aircraft with independent intellectual property rights.

According to reports, compared with similar foreign regional aircraft, Xiangfeng’s design uses Golmud Airport and Jiuhuang Airport (Jiuzhaihuanglong Airport) as critical design conditions, and uses 57 routes in the west to test the aircraft’s performance. Route adaptability. Its standards are much higher than the conditions of Denver Airport in the United States selected by foreign aircraft, and can ensure that aircraft can take off and land at full load at most domestic airports.

According to relevant sources, according to the plan, the final assembly of the Xiangfeng aircraft will begin in March 2007, and will be completed and painted before the end of 2007. The first flight will be achieved in March 2008. So far, Shandong Airlines, Shanghai Airlines, Xiamen Airlines and other companies have signed advance orders for 71 ARJ21 aircraft with Air China. In 2009, Chinese tourists are expected to fly on planes built by the Chinese.

The Xiangfeng is a medium- and short-range turbofan regional aircraft with 70 to 90 seats. It adopts a double circular section fuselage with five seats in each row, a low single wing, a high horizontal tail, and a three-point retractable landing gear. , two engine layouts with tail crane. The selected engine has the characteristics of low fuel consumption, low noise, high reliability and easy maintenance. The cockpit adopts a two-person system, the avionics system adopts bus technology, LCD flat panel display and is highly integrated, and the mechanical system adopts internationally mature advanced technology.