Military of China, force comment.
Military of China, force comment.

structure F -20 Diagram

F -20 * Vision

F -20 flight

official Chinese stealth fighter test confirmed that there is no specific

(Reporter Guoyuan Dan Guo Yue) last night, the Chinese Defense Ministry official confirmed that the afternoon flight is a normal -20 J of work .

1 pm yesterday, China’s most advanced stealth fighter F -20 to test the message from the network upload. Some websites post the test photos and video, and brief case. This time was considered a bit “delicate.” At this time, U.S. Defense Secretary Robert Gates is preparing to meet with President Hu Jintao.

7 o’clock last night, the Chinese Ministry of Defense Robert Gates’s visit to China held a press conference, the Chinese Ministry of National Defense Foreign Affairs Office, Major General, Deputy Director Friends of flying off a low-key to confirm the presence of F -20. He said China’s development of weapons is not targeted at any country and specific goals. F -20 to test just a normal work without any relevance.

Earlier, Chinese Defense Minister Liang also said that China’s weapons and equipment from developed countries, the gap should be two or three decades, China’s development of these weapons would not pose a threat to any country in the world.

with the Chinese military low-key, frank than the network showed a Chinese military fans cheer the mood to celebrate.

netizens on the shape of F -20 were discussed. -20 F with a single-seat, twin-engine layout, are heavy fighter. Diamond-shaped body, with full-motion V-twin vertical tails, landing gear doors with a jagged edge design. More than 20 meters long and more than large body wingspan of 13 meters make it especially attractive. More eye-catching, it has a revolutionary stealth performance.

F -20 as China’s first stealth fighter, we may wish to adopt it with the United States diagram F-22, the Russian T-50 to do some comparison.

F -20 Schematic

stealth technology

stealth fighter’s trick is to stealth. To be invisible, the first is the stealth appearance. This requires the removal of the body’s source of strong reflections, such as vertical, drum kits and stairs and so on. Second, the use of absorbing materials also need to reduce the aircraft radar reflection area.

shape

view from the aircraft side of the photo can be seen in stealth form F -20 down enough effort. From nose to tail through the whole body of the line is continuous, the basic on a plane, upper and lower body surfaces are very flat, it is obvious stealth design, reducing the discontinuity caused by the radar reflection plane .

F -20 photo spread of the Internet

full-motion twin vertical tails

China’s first fourth generation fighter aircraft with a camber of the twin vertical tails design, from the picture, apparently full-motion twin vertical tails. Full-motion twin vertical tails is in line with “vortex lift” and design.

vortex strength increase will affect the vertical tail, reducing the aircraft longitudinal stability, need to reduce the vertical tail area; while reducing the vertical tail fin area will reduce performance. All-moving vertical tail just to solve this problem. If the stealth aircraft in the best state level, then the twin vertical tails on the whole dynamic played under the best of the stealth effect correction channel effect.

upward force from the principle of increased eddy current swept wing on the wing, can produce a powerful combination of eddy current, resistance is smaller, the better stealth, mobility is a good symbol

side bar and dihedral canard

F -20 aerodynamic design with a “vortex lift” technology. In other words, the use of the main wing front edge of the wing, canard a strong vortex, vortex on the wing from the main wing swept wing lift can be greatly increased.

inlet

F -20 using DSI intake, air intake before the three-dimensional drum bag, remove air to achieve the purpose of the boundary layer, with light weight, meet a wide range of speed, stealth will not affect benefits.

whole canopy

F -20 there is a bright spot, that is, using the whole canopy. Currently, only the F-16 and F-22 using the whole canopy, which reflects the tremendous progress of China’s technology.

Russian T-50

invisible Appearance: Full machine mainly consists of titanium alloy construction. Oval-shaped cross-section of the fuselage, the nose radome is slightly flattened the front, bottom horizontal.

U.S. F-22

invisible Appearance: horizontal tail does not exceed the engine, air superiority fighter. Twin vertical tails, in the wing.

Chinese J-20 (visual)

invisible Appearance: diamond-shaped fuselage, vertical tail tilted outward, landing gear doors using serrated edge design.

F -20 fighter planes with Russian fourth-generation contrast

edition the author/(except for signature outside) correspondent Guo Yue graphics/Mao Jingdong