The VIGV assembly is mounted to the front of the Low Pressure Compressor (LPC) and consists of 43 stationary leading-edge vanes and 43 variable trailing-edge flaps.
Twin hydraulic actuators with Linear Variable Differential Transducers (LVDT) are mounted on the on the actuator ring.
VIGV position is controlled by continuous measurement of LPC inlet temperature and High-Pressure Compressor (HPC) discharge pressure.
If the turbine has Fixed Inlet Guide Vanes (FIGV), the upgrade involves adding the VIGV module, a new Hydraulic Control Unit (if applicable), off-engine cables, hydraulic lines, and updating the control software.
Contact us for a quote on our variable inlet guide vanes with EFS.