1. Field of the Invention
The present invention relates to an air intake system of an aircraft and having an excellent secretiveness (stealth).
2. Description of the Prior Art
Heretofore it has been known that if an air intake port of an air intake system of an aircraft is provided on an upper surface of an airframe of the aircraft, the secretiveness or security of the aircraft will be high, especially against radair beam irradiation from below, i.e., on the lower surface of the airframe. However, since turbulence of air on the upper surface of the airframe is violent and the performance at such an air intake port is degraded upon taking a large angle of attach and at high mobility, it was difficult to practically employ such system.
In other words, in the prior art if it is contemplated to dispose an air intake port having excellent secretiveness on an upper surface of an airframe, when the aircraft takes a large angle of attack and at high mobility, the air intake port would introduce to the engine tubulent air on the upper surface of the airframe, and thus the performance (total pressure recovery, distortion, etc.) of the air intake port would be degraded. Under such circumstances, the engine would stop frequently, resulting in fatal shortcomings for an airframe having high mobility.