Study on the Forward end Sweep on the Aerodynamic Performance of Transonic Cantilevered Stators

The paper investigates the effect of forward end sweep on the aerodynamic performance of cantilevered stators. On one aspect, forward end sweep reduces both the peak Ma and the size of high-Ma region on the blade suction side, thus decreasing the shock loss near the hub. On the other aspect, it also reduces the peak load, leads to load redistribution in the chordwise direction and decreases the leakage loss. At the same time, the forward end sweep is applied to the transonic cantilevered stators in an industrial multistage axial-flow compressor. An improvement of adiabatic efficiency is achieved by approximately 0.9%, while the total pressure ratio is maintained.