is from the recent F22 promotional video of the US military. At this time, the F22 is flying at a high angle of attack, and the design ideas of the aerodynamic shape of the front fuselage are vividly displayed.
Pay attention to the flowing mist all over the front fuselage of the F22. These mists are formed by condensation of water vapor in the air; they are in the center area of the high-speed rotating vortex airflow. The third and fifth generations of
fighters generally have special design measures on the shape of the front fuselage to deliberately induce vortex airflow, and make these vortex airflow sweep and cover the upper surface of the wing. This can greatly improve the flight performance of the aircraft.
Picture: F22 and F18's eddy current increase design comparison
F22's vortex generation design is very advanced, compared with the third-generation machine, its special feature is that the real side strip in its physical structure is very small, only in the air inlet There is a little bit on the outside; but by combining with the edges of the side of the front fuselage and the front of the air intake, its entire front fuselage is equivalent to a huge sidebar.
This makes F22 obtain far stronger eddy current increase lift performance than the third-generation aircraft, while the high-speed resistance is far less than the conventional third-generation aircraft.
For a detailed explanation of F22 design, you can read the following article. In addition, to this day, F22 maneuverability is still the first of all fighters.
