Invention Application
- Patent Title: LOW PRESSURE RATIO FAN ENGINE HAVING A DIMENSIONAL RELATIONSHIP BETWEEN INLET AND FAN SIZE
-
Application No.: US16658674Application Date: 2019-10-21
-
Publication No.: US20200063603A1Publication Date: 2020-02-27
- Inventor: Wesley K. Lord , Robert E. Malecki , Yuan J. Qiu , Becky E. Rose , Jonathan Gilson
- Applicant: United Technologies Corporation
- Main IPC: F01D25/24
- IPC: F01D25/24 ; F01D5/14 ; F02K3/06 ; F01D5/02 ; F01D15/12 ; F02C7/04 ; F01D17/10

Abstract:
A gas turbine engine assembly includes a fan. A diameter of the fan has a dimension D. The fan has a pressure ratio of greater than 1.20 and less than 1.45. A leading edge on an inlet portion of a nacelle is within a first reference plane oriented at an oblique angle. A forward most portion on the fan blade leading edges is in a second reference plane. A length of the inlet portion has a dimension L different at a plurality of locations on the inlet portion. A geared architecture has a gear reduction ratio of greater than 2.3, a bypass ratio is greater than 10, and a low pressure turbine includes a pressure ratio greater than 5:1. A dimensional relationship of UD is between 0.25 and 0.45. The leading edge on the inlet portion is further from the second reference plane near the top of the assembly.
Information query