Many US military experts still regret the results of the war between the Lockheed Martin and Northrop Grumman, when the F-22 Raptor is not worthy of the competitive version YF-23.Theo magazine National Interest, The 1980s the US Air Force opened the advanced tactical plane program (ATF). Lockheed Martin Group and Northrop Grumman are required to develop the test sample to compete for the program.Lockheed Martin introduces the YF-22 model, while Northrop Grumman submits the US military authority to fighters YF-23. Basically, YF-22 and YF-23 are made with high stealth capabilities
. After many experiments, the Pentagon decided to choose YF-22 winning the ATF program. Some military analysts said that if YF-23 was chosen, it could become more excellent fighter than F-22 Raptor fighter. The aerodynamic design of YF-23 provides abilities Stealth is higher than YF-22
Looking from above, YF-23 has a main wing of "diamond" and does not have a horizontal stable wing in the tail. The engine's exhaust pipe is facing up and providing a good infrared shield. YF-23 test aircraft model is built with 2 colors of black and gray paint. They are nicknamed "Black Widow II" and "Ghost Gray". YF-23 has a better speed journey thanks to the general-electric yf120 variable cycle engine. Barry Watts, an analyst belongs to Northrop Group once explained, even if equipped with Pratt engine
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