High Altitude Low Pressure Simulation Test
1. Low Air Pressure Environment Due to the gravity of the earth, the air has a certain weight to form atmospheric pressure. The atmospheric pressure at a certain height is the heaviest of the entire air column on the unit area perpendicular to the ground above the point. With the increase of height, the air gradually becomes thinner and the atmospheric pressure gradually decreases. According to the actual measurement, within 3000 km of sea level, the air pressure decreases by 100 Pa for every 10 meters of height increase, and the atmospheric pressure near 31 km is 1/100 of the standard atmospheric pressure at sea level. In addition to being related to altitude, atmospheric pressure is also related to weather changes. At the same place, the pressure is high in sunny days and low in overcast days, and the pressure in winter is higher than that in summer. In China, about 50% of the earth’s surface area is 1000 m higher than the sea level, and about 25% of the area is 20...