Dissect the F-20: super stealth super maneuverable strive ultimate

Integration of the world's many outstanding fighters advanced wonderful design in one

The overall layout of observation
First, the F -20 continuation of the F-10 canard Gache sharp delta wing layout In fact, China's military sources already in the last year revealed that four generations of machines in China will be a significant modification of an F -10. This approach is completely understandable and even expected to get - the U.S. F-22 can be counted as the F-15 stealth modification, the Russian T-50 can be counted as the Su-27 stealth modification.
Most of the countries of the models of the Air Force design, with a certain degree of continuity, this is because the First, the design unit has its own heritage, design features and direction, the second is represented in fighter behind understanding and planning of the Air Force Air Combat These two points are known as the origins and traditions.
Secondly, the whole line is straight, not much complex curves and downs, like the F-22; diamond-shaped head, polyline fuselage, and extensive use of the inclined plane, with a very obvious stealth characteristics.
The whole body is slender, razor, sharp, the overall front fuselage slightly narrow, slightly thick body, lifting body fuselage side. The longer fuselage, huge space may be arranged in the internal bomb bay and tanks.
Other key features include V-shaped all-moving vertical tail; diamond head side bar and wing before the small side bar; service and confirm three four generations machine (F-22, F-35, T-50) uses the same high-wing, wingspan relatively minimal low aspect ratio (scientific name).
-20 F four generations of machines Five Dynasties machine
In the national military experts and scholars, news media, there are different definitions and division of the fighter on behalf times, different name for the old and new generation times wrong Diego, which led to greater confusion. For example, China's new fighter in the end four generations of machines or five generations of machines, four generations of machines like Su-27 or refers to such fighters like the F-22, has been difficult to unify even further differentiation, even many Military buffs tell Road, unknown.
To this end, we had this to spend some space traced explain. First, World War II fighter jets algebra divided, with two slight differences are further classified as standard. The criteria for the classification of the original U.S.:
The first-generation jet fighter production after the war in the late 1940s to the 1950s, the typical fighter the U.S. F-80, F-86, F-100, and the Soviet MiG -15,17,19.
The second-generation fighter flourished in the 1960s, the the typical fighter with the U.S. F-104, F-4 and the Soviet MiG -21,23, is characterized by the pursuit of faster speed.
After less than a decade that the third-generation fighter available, has been flourishing since the U.S. F-14, F-15s, F-16, F/A-18, the Soviet Su-27, MiG-29, France Mirage-2000, China's F -10, which is characterized in its column is converted to the pursuit of greater mobility, with a long-range air-to-air missile, BVRAC become basic combat style.
F-22 declared the era of the fourth-generation fighter, it also defines four standard four generations of machines - stealth, supersonic cruise (four generations of low-grade fighters can not do, such as the F-35), the ultra-mobility and information capacity.

Russia and the U.S. face battle intensified chaos
Further classified in the former Soviet Union, the first generation of fighters turn the U.S. standard based on the ability to supersonic flight, divided into before and after two generations, the formation of the Five fighters. First-generation F-80, F-86 and MiG -15,17 this subsonic fighters, the second generation of the F-100, F-101 and MiG -19 this supersonic fighter. China does not use this approach because of this division is too small, there is no need, but the habit of using the American division.
However, in recent years, Russia is the needs of the market publicity, trying to own T-50 called fifth-generation fighter, the Su-27 modified called four generations of fighters; United States feel that their own state-of-the-art Russian fighter F -22 only referred to as the fourth generation, is the momentum eat the loss, so the last two years to switch to the Russian division of law. Ever since, Russia and the United States, the old and new ways intertwined, resulting in a great deal of confusion.
And China insisted on continuing with four generations of division method, also suffered the distress of the United States a few years ago in the international media. However, the Chinese military fans do not seem to mind the idea, affectionately called black F -20 "black four generations", referred to as "black silk. It is in a clear-cut distinction.
Have been identified will be serving three fourth-generation fighters: F-22, F-35, T-50
F-22 fighter is Lockheed - Martin for the U.S. Air Force developed the early 21st century the main heavy air fighter, is mainly used to replace the F-15 fighter jets of the U.S. Air Force active duty, has the highest priority in the development of the U.S. Air Force weaponry position. Prototype flew in 1990, the prototype first flight in 1997, has been in service in 2005, currently scheduled for the construction of 180 air force have all been delivered, but the U.S. Air Force hopes to have 380, and the first equipment program is up to 750 .
The F-35 is a medium-sized fighter designed by Rockwell - horse, currently being test flight in 2014 is expected to begin to equip the U.S. Air Force, Navy and Marine Corps, its overall layout like a reduced version of the F-22, but compared with the F-22 for the low-end, stealth capability with the F-22 can not be comparable. VTOL requirements for compatibility Corps Model, not only do not have the supersonic cruise capability, even the maximum speed, but the 1.6 Mach, the slowest fighter in the last 50 years, is not conducive to air combat. Its design objectives and tasks performed by 70% of the attack, 30% of the air mission. Will be the U.S. military to attack the main multi-role fighter, replacing the retired third-generation fighter. In addition, as only a purchase of high-end fighter exported to many other allies of the United States.
T-50 Russian Sukhoi Design Bureau has just launched the fourth-generation fighter, the overall infrastructure improvements on the foundation of the Su-27 a big success, and the first flight in the morning of January 29, 2010. Equipment to the Russian and Indian Air Force is expected to be 5-6 years.

Pneumatic Features and lift characteristics
-20 F "canard + edge of the wing + lifting body" layout structure, full motion canard edge of the wing, the lifting body combination of the three together.
F -20 the canard main role, and the J-10, in order to produce the detached vortex formed the main wing on wing segment the favorable interference, improve the lift characteristics of the main wing and handling performance. But the F-20 canard with dihedral for stealth, canard and the main wing roots can only be set in the same plane, therefore, need some distance, play canard lift effect. -20 F with a diamond-shaped head the Link line head trim, also must attack after the canard and the main wing before the scheduled period of edge of the wing.
-20 F, while the U.S. F-22, F-35, Russian T-50 only deformation of the edge of the wing, ranging in size, with a complete canard and the edge of the wing in the world have four generations of fighter the lift characteristics of the best, the highest lift coefficient. This means that China's fourth generation to have a shorter takeoff distance and better stability circling.
More advanced than the F-22 in the DSI intake port
DSI supersonic air intake means no separation board, Diverterless Supersonic Intake, pioneer of the U.S. F-35 developed by contractor Rockwell - Ma. It cleverly using a design derived through computational fluid dynamics, the complex shape of the 3D drum kits, sluggishness of the boundary layer airflow layer from the middle of a cross-sectional, directed air intakes on both sides of the corner bleed, without affecting "clean" airflow main layer stably entering the engine.
Thus, DSI avoid boundary layer separation plate of the F-22 used in the intake port, to avoid the forward stealth a big hidden on the inlet, but also a degree of shielding to reduce the weight of the fuselage structure, one stroke more gains.
After Cheng Fei rapidly in 2006 on the improvement of the "Fierce Dragon" aircraft application of this advanced technology of the inlet, but in 2008 applied to the improvement of the F -10. And Rockwell - Horse become global grasp and application of the technology, one of the two companies. DSI limitations of the air inlet
DSI drum kits have been carefully calculated, but not adjustable. This means that in this inlet fighter lose weight, improve engine efficiency advantage, but this advantage can only be fixed at a certain speed range, mainly near the high subsonic. That has been constrained by the performance of their supersonic.
F-22 using a traditional air inlet boundary layer separation plate, and to ensure a high supersonic flight performance needs. DSI intake port generally only applies to the relatively low flight speed fighter such as the F-35 "Fierce Dragon". Both aircraft are flight speed of the slowest fighters in the past 50 years, the maximum operating speed of only 1.6 Mach.