Abstract: The determination of the rotational speed and massflow of the fan of a turbofan at windmill is critical in the design of the engine-supporting structure and the sizing of the vertical stabilizer. Given the very high bypass ...

Abstract: The present work is a contribution to understanding the windmilling operation of lowspeed fans. Such an operating situation is described in the literature, but the context (mainly windmilling of aeroengines) often involves ...

Abstract: A detailed study of the air flow through the fan stage of a highbypass, geared turbofan in windmilling conditions is proposed, to address the key performance issues of this severe case of offdesign operation. Experiments ...

Abstract: Due to the growing interest from engine and aircraft manufacturers for contrarotating open rotors (CROR), much effort is presently devoted to the development of reliable computational fluid dynamics (CFD) methodologies for ...