The pressure control method of the aircraft sealed cabin is as follows

The pressure control method of the vehicle sealed cabin is as follows:

1. Absolute pressure control: set the cabin pressure higher than the outside atmospheric pressure to ensure the comfort of passengers. By adjusting the opening of the exhaust valve, the cabin pressure is controlled to keep it within a predetermined range.

2. Vacuum pressure control: The air in the cockpit is pumped out by a vacuum generator to reduce the engine room pressure. During the flight, the cabin pressure can be accurately controlled by adjusting the performance of the vacuum generator.

3. Pressure change rate control: By controlling the change rate of cabin pressure, passengers can be prevented from feeling uncomfortable because of the rapid pressure change. According to the flight altitude and the external atmospheric pressure, the opening of the exhaust valve is reasonably adjusted to keep the cabin pressure change rate within a safe range.