Patent · US Active

Turbine abradable layer with compound angle, asymmetric surface area ridge and groove pattern

US9920646B2 · kind B2 · utility

4Cited by

132References

18Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Ching-Pang Lee · Cincinnati, US
Kok-Mun Tham · Oviedo, US
Gm Salam Azad · Oviedo, US
Zhihong Gao · Taipei, TW
Erik Johnson · Cedar Park, US
Eric Schroeder · Loveland, US
Nicholas Francis Martin · High Point, US

Key dates

Filing date	Feb 18, 2015
Grant date	Mar 20, 2018
Priority date	—
Expiry date	Mar 10, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49236
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Turbine and compressor casing/housing abradable component embodiments for turbine engines, have abradable surfaces with asymmetric forward and aft ridge surface area density. The forward ridges have greater surface area density than the aft ridges to compensate for greater ridge erosion in the forward zone during engine operation and reduce blade tip wear in the aft zone. Some abradable component embodiments increase forward zone ridge surface area density by incorporating wider ridges than those in the aft zone.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.