Abstract: The contrarotating open rotor is, once again, being considered as an alternative to the advanced turbofan to address the growing pressure to cut aviation fuel consumption and carbon dioxide emissions. One of the key ...

Abstract: The growing pressure to reduce fuel consumption and cut emissions has triggered renewed interest in contrarotating open rotor (CROR) technologies. One of their potential issues is selfexcited or forced vibration of the ...

Abstract: The aerodynamic impact of installing a horizontal pylon in front of a contra-rotating open rotor engine, at take-off, was studied. The unsteady interactions of the pylon's wake and potential field with the rotor blades ...

Abstract: This paper presents a study on lowpressure (LP) turbine bending flutter. The study is performed using a semianalytical model, which is validated against experimental and computational fluid dynamics (CFD) data. The validation ...

Abstract: Very high bypass ratio turbofans with large fan tip diameter are an effective way of improving the propulsive efficiency of civil aero-engines. Such engines, however, require larger and heavier nacelles, which partially ...