Hypersonic large internal contraction ratio air inlet channel having stepless adjustable air release valve and control method

A hypersonic large internal contraction ratio air inlet channel having a stepless adjustable air release valve, comprising:

• an air inlet channel front body;
• an air-discharging slit cover plate extending backwards from the air inlet channel front body;
• a lip cover disposed on the air-discharging slit cover plate, sidewalls disposed on two sides of the lip cover;
• the air inlet channel front body, the air-discharging slit cover plate, the lip cover and the sidewalls on the two sides together form an inner flow channel of the air inlet channel;
• wherein a plurality of adjacent air-discharging cavities are arranged from front to back inside the air-discharging slit cover plate, the plurality of adjacent air-discharging cavities are separated by a partition plate, and a plurality of air-discharging slits disposed in the air-discharging slit cover plate connect the plurality of adjacent air-discharging cavities to the inner flow channel;
• a lower half of each one of the plurality of adjacent air-discharging cavities has an air-discharging channel laterally penetrating both of the sidewalls;
• and
• the stepless adjustable air release valve comprises:
• a driver;
• a rotatable shaft extending from the driver;
• and
• a plurality of valve plates with a respective one of the plurality of valve plates disposed in each air-discharging channel, wherein the plurality of valve plates are mounted on the rotatable shaft and are rotated by means of the rotatable shaft between open and closed positions;
• when the plurality of valve plates are rotated to the open position, the plurality of adjacent air-discharging cavities are communicated with the outside;
• and
• when the plurality of valve plates are rotated to the closed position, the plurality of adjacent air-discharging cavities are closed by the plurality of valve plates.