Air Lock -

Related resources for this article ... Courtesy of Elgood-Mayo Corp., Lancaster, Pa. Courtesy of Elgood-Mayo Corp., Lancaster, Pa. Britannica Kids

In engineering, an air lock is a chamber that allows people or objects to pass between areas of different air pressures without significantly changing the pressure of either environment. air lock

: Vital for space vehicles, allowing astronauts to exit for spacewalks while keeping the cabin pressurized. Related resources for this article