João

Hi! Thanks for the answers. Ya, now I look for the units and understand this... :Glasses: I don´t see them and let me confused because if don´t have units this ratio are dimensionless. This was my confusion. Thanks for all

Thank you for your answer! But what I want to ask it´s the reason between the width and diameter because I found a web page where they have this reason. (Civil Turbojet/Turbofan Specifications) In this page have one parameter: (width/diameter) = 'a number' ---> I don´t understand what this relation means! In a turbofan we have the Fan diameter and I understand this but in a turbofan I don´t see why this relation between those two. I hope you understand me better now. Sorry if my question was poorly made.

I have a question if anyone know! I´m working in a turbofan for know the "on-design" and when I search I found this parameter: Width/Diameter! Anyone can tell me what this means? And for what can I use this?