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US 2015/0174710 A1Published application
Method of manufacturing heat exchanger cooling passages in aero propulsion structure
AssigneeAlliant Techsystems Inc.
InventorsDaniel P. Guinan, James B. Philpott, Henry K. Webster, Christopher Gettinger
Life of this patent
Estimating the term…
Abstract
Methods and apparatus of an improved cooling structure having cooling passages are provided. A method includes forming pilot holes with an electrical discharge machine (EDM) drill near a heated flow surface. The pilot holes are then shaped with a wire EDM into cooling passages having a desired shape.
Claims20
A method of forming a heat exchange system, the method comprising:
- abutting an end of a first heat exchange section against an end of second heat exchange section, the first heat exchange section and the second heat exchange section each including cooling passages extending therethrough;
- aligning a groove in the end of the first heat exchange section extending in a direction transverse to the cooling passages extending through the first heat exchange section and positioned at an end of each of the cooling passages with a groove in the end of the second heat exchange section extending in a direction transverse to the cooling passages extending through the second heat exchange section and positioned at an end of each of the cooling passages to form a coupling cooling passage providing an interface channel between the cooling passages in the first heat exchange section and the cooling passages in the second heat exchange section;
- and
- joining the end of the first heat exchange section with the end of the second heat exchange section.
1 more element
A heat exchange section comprising:
- a combustor wall comprising:
- a first end having a first groove in the combustor wall extending around the combustor wall;
- a second end opposing the first end, having a second groove in the combustor wall extending around the combustor wall, wherein the combustor wall defines an inner flow path contour extending between the first end and the second end;
- and
- a plurality of cooling passages extending in a direction transverse to the first groove and the second groove from the first end to the second end proximate the inner flow path contour, each cooling passage of the plurality of cooling passages extending from the first groove at the first end and the second groove at the second end and having a first opening in the first groove of the first end and a second opening in the second groove of the second end.
2 more elements
A heat exchange system, the system comprising:
- a plurality of heat exchange sections, each heat exchange section having a first end and a second end, each heat exchange section having a plurality of cooling passages extending through the respective heat exchange section between the first end and the second end proximate an inner contour of the heat exchange section, each heat exchange section further having a groove in each of the first end and the second end, each cooling passage of the plurality of the cooling passages in each heat exchange section having an opening in direct communication with the groove in the first end and another opening in direct communication with the groove in the second end, wherein a coupling cooling passage is defined at an interface between a heat exchange section of the plurality of heat exchange sections and an adjacent heat exchange section of the plurality of heat exchange sections by the groove at the first end of the heat exchange section and the groove at the second end of the adjacent heat section, the coup passage providing an interface channel between the plurality of cooling passages of the heat exchange section and the adjacent heat exchange section.
Dependencies are inferred from the claim text.