Reversible flow blade outer air seal

Patent metadata

Field	Value
Publication number	US-2016169016-A1
Application number	US-201514880403-A
Country	US
Kind code	A1
Filing date	Oct 12, 2015
Priority date	Dec 15, 2014
Publication date	Jun 16, 2016
Grant date	—

Abstract

A casting core for a Blade Outer Air Seal includes a heat exchange cavity core section in communication with a first plenum section and a second plenum section, the first plenum and the second plenum section are of a thickness greater than the heat exchange cavity section.

First claim

What is claimed:

1 . A casting core for a Blade Outer Air Seal, comprising:
a first plenum section; a second plenum section; and a heat exchange cavity core section in communication with said first plenum section and said second plenum section, said first plenum and said second plenum section are of a thickness greater than said heat exchange cavity section.

2 . The casting core as recited in claim 1 , wherein said heat exchange cavity core section includes a multiple of pedestals defining a tortuous airflow path.

3 . The casting core as recited in claim 1 , wherein said heat exchange cavity core section includes a multiple of elongated strips defining a tortuous airflow path.

4 . The casting core as recited in claim 1 , wherein said first plenum and said second plenum section are of a thickness to receive a laser drill.

5 . The casting core as recited in claim 1 , wherein said heat exchange cavity core section is machined.

6 . A Blade Outer Air Seal, comprising:
a first plenum section with a first multiple of passages; a second plenum section with a second multiple of passages; and a heat exchange cavity section in communication with at least one of said first multiple of passages, and at least one of said second multiple of passages.

7 . The Blade Outer Air Seal as recited in claim 6 , wherein said first plenum section and said second plenum section each has a respective thickness greater than a thickness of said heat exchange cavity section.

8 . The Blade Outer Air Seal as recited in claim 6 , wherein said first multiple of passages are inlet passages through an outer face.

9 . The Blade Outer Air Seal as recited in claim 8 , wherein said second multiple of passages are exit passages through an inner face.

10 . The Blade Outer Air Seal as recited in claim 6 , wherein said second multiple of passages are inlet passages through an outer face.

11 . The Blade Outer Air Seal as recited in claim 10 , wherein said first multiple of passages are exit passages through an inner face.

12 . The Blade Outer Air Seal as recited in claim 6 , wherein at least one of said first and second multiple of passages are inlet passages and the other of said first and second multiple of passages are outlet passages.

13 . The Blade Outer Air Seal as recited in claim 6 , wherein said heat exchange cavity section includes a multiple of pedestals.

14 . The Blade Outer Air Seal as recited in claim 6 , wherein said heat exchange cavity section includes a multiple of elongated strips.

15 . The Blade Outer Air Seal as recited in claim 6 , wherein said first plenum and said second plenum section are of a thickness configured to receive a drill.

16 . The Blade Outer Air Seal as recited in claim 6 , wherein said heat exchange cavity core section is of a thickness that prohibit receipt of a drill.

17 . A method of manufacturing a Blade Outer Air Seal, comprising:
forming a casting core with a heat exchange cavity section in communication with a first plenum section and a second plenum section, said first plenum section and said second plenum section having a thickness greater than a thickness of said heat exchange cavity section; and drilling a first multiple of passages into the first plenum section and a second multiple of passages into the second plenum section.

18 . The method as recited in claim 17 , wherein the first multiple of passages are inlet passages through an outer face and the second multiple of passages are exit passages through an inner face to form a forward airflow direction.

19 . The method as recited in claim 17 , wherein the second multiple of passages are inlet passages through an outer face and the first multiple of passages are exit passages through an inner face to form an aft airflow direction.

20 . The method as recited in claim 17 , wherein forming the heat exchange cavity core section includes machining the heat exchange cavity core section of the casting core.

Assignees

• United Technologies Corp

Inventors

• Blaney Ken F
• Swift Anthony B
• Tatman Neil L
• Lutjen Paul M
• Jarochym Christopher M

Classifications

• F01D9/065 Primary

  Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids (see also F01D25/16, F01D25/24 and F01D25/26) · CPC title

• B22C9/10

  Cores; Manufacture or installation of cores {(breaker cores B22C9/084)} · CPC title

• F01D11/08 Primary

  for sealing space between rotor blade tips and stator (specially-shaped blade tips therefor F01D5/20) · CPC title

• F05D2260/204

  by the use of microcircuits · CPC title

• F05D2230/211

  by precision casting, e.g. microfusing or investment casting · CPC title