Cabin Door Seal

摘要

Most turbine-powered airplanes are designed to cruise in the flight levels- 18,000 feet msl and above-where the air is thin, true airspeeds are high, fuel flows are relatively low, and the weather is down below. To fly high comfortably requires that the cockpit and passenger cabin be pressurized, and the key to effective pressurization is a 'tight' pressure vessel, meaning that there are few places where higher-pressure air inside the cabin can leak out into the lower-pressure atmosphere. One area that demands special treatment because of the high potential for leaks is the cabin door.