The B-2 “Ghost” is the first stealth strategic bomber in the history of human aviation. Its stealth design can be described as “perverted”. In addition to the aerodynamic modification, the B-2 skin is also sprayed with stealth paint, and the tail nozzle is also With infrared suppression processing, both radar and infrared stealth effects are excellent. In order to achieve the best stealth effect, all the openings of the B-2 are also designed for stealth, including the fuel inlet for aerial refueling.
The oil receiving port of B-2 is hidden under the skin of the back of the machine normally. When refueling in the air, the oil receiving port will be flipped to the surface of the skin to complete the aerial refueling. After refueling, it will be hidden again to avoid damaging B- 2 overall stealth design.