公开(公告)号：EP2809881A4

公开(公告)日：2015-08-19

申请号：EP13749721

申请日：2013-01-18

Applicant: UNITED TECHNOLOGIES CORP ,  MTU AERO ENGINES AG

Inventor： TOPOL DAVID A ,  MORIN BRUCE L ,  KORTE DETLEF

IPC: F01D1/02 ,  F02C7/262 ,  F02K3/02

CPC classification number: F01D5/02 ,  F02C3/107 ,  F02C7/06 ,  F02C7/20 ,  F02K3/06 ,  F04D29/056 ,  F05D2260/961 ,  F05D2270/333 ,  Y02T50/671

Abstract: A gas turbine engine is utilized in combination with a gear reduction to reduce the speed of a fan relative to a low pressure turbine speed. The gas turbine engine is designed such that a blade count in the low pressure turbine multiplied by the speed of the low pressure turbine will result in operational noise that is above a sensitive range for human hearing. A method and turbine module are also disclosed.