Design of Aeronautical Pressure Parameters Calibrating Instrument

An aero-engine pressure parameters calibrating instrument is introduced in this paper,and in which normal fuel,oil or hydraulic pressure,which is used to calibrate sampling errors of corresponding flight data collecting channels,can be produced,At the same time,the display meters of pressure system can also be checked on-line and termly.Then,its hardware configuration,work principle and design method of software are expatiated by us.Practice indicates that it have highly measurement and controlment precision,and reliable working stability,which can satisfy the needs of actual work.