Bespoke PLC & SCADA-HMI Design and Development
Bespoke PLC & SCADA-HMI Design and Development
Aviation Pressure & Flushing Test System
Using the Siemens S7-1200 PLC and WinCC SCADA package, we designed, installed and commissioned a PLC/SCADA Program for a system that pressurised various airplane wings from 1100 PSI (76 Bar) to 5650 PSI (390 Bar) to test the integrity of the airplane wing construction.
During a pressure test, the PLC controlled and monitored the states of several pieces of equipment including, pumps, valves, pressure transducers and a flow meter to purge, increase pressure at a rate of 100 Bar/Min, stabilise, hold and monitor a pressure drop of up to 5% within the pipework of each airplane wing.
The airplane wings would then undergo a flushing process which is controlled via a drop-in flushing rig which uses an electrically driven pump that produces 40 litres per minute during the flushing sequence. This drop-in flushing rig is controlled from the same Siemens S7-1200 PLC which is controlling the pressure testing rig.
During this flushing process, the PLC monitors the cleanliness level of the pipework within the airplane wings via an ICM (Inline Contamination Meter) unit connected to the PLC via RS485 to ensure that all pipework within the airplane wings are flushed to the correct AS4059 cleanliness standard.
