Separation-resistant inlet duct for mid-turbine frames

Details Separation-resistant inlet duct for mid-turbine frames Separation-resistant inlet duct for mid-turbine frames

2008-08-18

2011-11-22

Blum, David S (Department: 2813)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

C415S208100

Reexamination Certificate

active

08061980

ABSTRACT:
A transition duct assembly for a gas turbine engine includes an outer diameter surface and an inner diameter surface. A substantially annular flowpath having a radial offset is defined between the inner diameter surface and the outer diameter surface. A curvature distribution of the inner diameter surface includes a first region of increasing slope in a radial direction and a second region of decreasing slope in the radial direction adjacent to and downstream of the first region. The first and second regions are configured to reduce flow separation along the outer diameter surface of fluid traveling along the substantially annular flowpath.

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