High fidelity in efficiency evaluation: Torque measured by means of high precision torque meter (HBM T12); Rotation speed regulated with DC motor up to 3500 rpm; Mass flow measured with venturi tube (ISO 5167) calibrated to obtain uncertainty below 0.5%; Total Pressure measurements with rake of kiel probe (up to 40 channels); Capability to change … Leggi tutto Anular cascade aerodynamics