IP Library Granted Patent US 9,695,694
Granted Patent B2
US 9,695,694 · App. 13/307,793 · Granted Jul 4, 2017

Aircraft engine blading

Inventor: Norbert Huebner (Dachau, DE)
Assignee: MTU Aero Engines GmbH
F01D5/141F05D2250/74Y02T50/673
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Quick Facts
Patent No.
US 9,695,694
App. No.
13/307,793
Granted
Jul 4, 2017
Kind
B2
Abstract

A blading for a turbine, in particular a gas turbine, is disclosed. The blades of the blading in a section near the tip have a distribution ratio (t/l) of at least 0.70, in particular at least 0.9, and/or at most 0.97, in particular at most 0.95. A downstream flow angle (α) is at most 167°, in particular at most 165°, and at least 155°, in particular at least 160°. In addition, or alternatively, an acceleration ratio (w 2 /w 1 ) is at least 1.4, in particular at least 1.5.

Claims (7)

1. A blading for a gas turbine of an aircraft engine, comprising:

blades, wherein at least one of the blades has a distribution ratio (t/l) in an area between 95% and 100% of a height of the at least one of the blades that is at least 0.90 and at most 0.97, a downstream flow angle (α) that is at least 160° and at most 167°, and an acceleration ratio (w 2 /w 1 ) of at least 1.4 in an area between 0% and 5% of the height of the at least one of the blades and grows larger in a direction toward the area between 95% and 100% of the height of the at least one of the blades by a factor greater than or equal to 2.

2. The blading according to claim 1 , wherein moving blades of the blades of the blading each have at least one seal tip.

3. The blading according to claim 1 , wherein a degree of reaction of the blading is at least 0.35 and/or at most 0.6.

4. The blading according to claim 1 , wherein profile sections of the moving blades of the blading are threaded radially over a center of gravity.

5. The blading according to claim 1 , wherein a stagnation point flow line to a blade front edge meets a blade profile in an area of a front edge radius.

6. An aircraft engine with a blading according to claim 1 , wherein the blading is arranged in a high-speed low-pressure turbine.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 2, 2012
From: HUEBNER, NORBERT
To: MTU AERO ENGINES GMBH
Reel/Frame 027800/0103 →
Priority Claims (1)
EP 10193067 · Nov 30, 2010 · regional
Continuity (1)
Related Publication 20120156047A1 · Jun 21, 2012