METHOD OF TESTING AN AIRCRAFT OXYGEN SUPPLY SYSTEM

摘要

A method of testing the performance of a an oxygen supply system (10) in any aircraft including an oxygen supply device (14) adapted to supply oxygen in varying concentrations within a product gas according to demand, in response to control signals (18), a monitoring means (19, 20) to monitor the concentration or partial pressure of oxygen in the product fluid stream, and a control means (20) responsive to the monitoring means to provide the control signals (18) to the oxygen supply device (14), the method being characterised in that the control means (20) provides a predetermined control signal to the oxygen supply device (14) which is expected to respond by supplying a known concentration or partial pressure of oxygen in the product gas (15), a nd monitoring the concentration of oxygen supplied.