Aircraft Air Start Units
An air start is a power source used to provide the initial rotation to start large aircraft jet turbine engines. This unit blows airflow into the turbines engines. The airflow is measured by “PPM’s” pounds per minute.
An air starter is a mechanical device that utilizes stored energy in compressed air or gas to create the necessary power and torque to start an engine. More specifically, an air starter is designed to work with reciprocating engines that are equipped with a ring-gear attached to the flywheel.
Stewart & Stevenson