Pressure Altimeter Subassembly

Pressure Altimeter Subassembly is a component of the Flight Instruments supply class in the Instruments And Laboratory Equipment supply group.

A pressure altimeter is an instrument used in aviation to measure the altitude of an aircraft above a fixed reference point, usually mean sea level. The pressure altimeter subassembly is a part of the overall altimeter system and is responsible for converting atmospheric pressure into altitude readings.

The subassembly typically consists of a pressure sensor, an aneroid capsule, and a mechanism for displaying the altitude. The pressure sensor measures the atmospheric pressure, while the aneroid capsule, which is a sealed metal container, expands or contracts based on the changes in pressure. This movement of the aneroid capsule is then translated into altitude readings on the display mechanism.

The pressure altimeter subassembly is an essential component of the flight instruments used by pilots to maintain accurate altitude control during flight. It provides crucial information for navigation, air traffic control, and flight planning.

In summary, the pressure altimeter subassembly is a vital part of the Flight Instruments supply class in the Instruments And Laboratory Equipment supply group, used to measure and display the altitude of an aircraft based on atmospheric pressure.