Group Project of Aircraft Design Fig.2-3 Y-8 transport plane 2.2.4Y-20 Y-20 is a new generation of heavy transport plane by independent research and development. It first appeared on Zhuhai show after its first lift-off in Yanliang,2013.Compared with IL-76 in active service,propulsion and electronic control system are significantly improved as well as its load capacity.According to the aerodynamic configuration and structure of IL-76,the design project was soon put forward,which also referred to C-17.The core aim is to achieve missions of transporting army and goods in the long distance in the bad weather flight.It is superior to IL-76, similar to the latest IL-476,and it is slightly inferior to C-17 in load capacity,but much superior to C-2 by Japan and A-400M by Europe. Y-20 is a promising platform for other special missions,including aerial reconnaissance, flight-refuel and AEW.In a word,it makes up a significant part of China air force of the future generation. 2.2.5 Comparison Model Y-30 Y-9 Y-8 Y-20 Length (m) 、 34.02 47 Wingspan(m) 38.0 45 Height(m) 11.16 15 Max payload (t) 30 20 20 66 Cruise(km/h) 650 800 550 Max range with 6000 8000 3440 7800 Max payload (km) Maximum 80 65 78.4 220 takeoff weight(t) Table.2-1 Comparison of civil transport plane 5Group Project of Aircraft Design 5 Fig.2-3 Y-8 transport plane 2.2.4 Y-20 Y-20 is a new generation of heavy transport plane by independent research and development. It first appeared on Zhuhai show after its first lift-off in Yanliang, 2013. Compared with IL-76 in active service, propulsion and electronic control system are significantly improved as well as its load capacity. According to the aerodynamic configuration and structure of IL-76, the design project was soon put forward, which also referred to C-17. The core aim is to achieve missions of transporting army and goods in the long distance in the bad weather flight. It is superior to IL-76, similar to the latest IL-476, and it is slightly inferior to C-17 in load capacity, but much superior to C-2 by Japan and A-400M by Europe. Y-20 is a promising platform for other special missions, including aerial reconnaissance, flight-refuel and AEW. In a word, it makes up a significant part of China air force of the future generation. 2.2.5 Comparison Model Y-30 Y-9 Y-8 Y-20 Length (m) - - 34.02 47 Wingspan (m) - - 38.0 45 Height (m) - - 11.16 15 Max payload (t) 30 20 20 66 Cruise (km/h) 650 800 550 - Max range with Max payload (km) 6000 8000 3440 7800 Maximum takeoff weight (t) 80 65 78.4 220 Table.2-1 Comparison of civil transport plane