Supersonic aircraft air inlet channel with adjustable throat area and adjusting method
A technology of air inlet and supersonic speed, which is applied in the direction of jet propulsion devices, gas turbine devices, machines/engines, etc. It can solve the problems of engine thrust reduction, large aircraft resistance, and large air inlet total pressure loss coefficient, etc., to achieve shortened length , Wave system configuration is flexible, and the adjustment process is simple and convenient
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Embodiment 1
[0021] Such as Figure 1-6 As shown, a supersonic aircraft air intake with adjustable throat area, the air intake includes a lip 1, a throat 2 and an expansion section 3, the part of the air intake located at the front end of the lip 1 is a multi-section wedge surface, The air inlet forms a constricted section between the lip 1 and the throat 2. In the air inlet, the throat 2 has the smallest cross-sectional area. A displacement mechanism (not shown in the figure) is arranged in the air inlet. Vanes 4 are arranged in the air inlet through the displacement mechanism, and the displacement mechanism can control the blades 4 to move back and forth and rotate in the air inlet.
[0022] Further, the blades 4 are arranged on the side walls on both sides of the air inlet through a displacement mechanism.
[0023] Further, the blade 4 is a supersonic airfoil or a supersonic airfoil.
[0024] Further, a fin 5 is provided on the upper part of the lip 1 of the air inlet, and one end of t...
Embodiment 2
[0035] Such as Figure 7-12 As shown, the difference between Embodiment 2 and Embodiment 1 is that the blades 4 are at least 2 pieces, and the blades 4 are set to 3 pieces here, specifically the upper blade, the middle blade and the lower blade, and the 3 blades 4 and the wing The combination of slices 5 makes the adjustment process more precise and effective.
[0036] A method for adjusting the air inlet of a supersonic aircraft with an adjustable throat area. In the take-off state, the blades 4 in the air inlet are all in the expansion section 3 of the air inlet, and the fins 5 on the upper part of the lip 1 rotate downwards to reduce the air intake. The opening area of the small lip 1; when the starting Mach number of the air inlet is reached and lower than the design Mach number of the aircraft, the fins 5 are gradually adjusted to rotate upwards until reset. After the fins 5 are reset, the upper blades of the expansion section 3 are sequentially , the middle blade and ...
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