A design to increase and smoothly improve the throughput of fluid (air or gas) through the inlet fan (or fans) of an aero-engine system

摘要

A fan 3 comprises a conical hub so that the hub ratio (ratio of hub diameter to total fan diameter) increases in a downstream direction. Blades of the fan may have a chord that increases from the root of the blade to the tip. The fan 3 may be an element of an aircraft, marine or an industrial electricity producing engine, the engine having guide vanes (i), (ii) positioned downstream of the fan to guide the working fluid to the atmosphere 6 as well as to a combustion process 7 of the engine.