Nosecap

Patent metadata

Field	Value
Publication number	US-2016273451-A1
Application number	US-201415032517-A
Country	US
Kind code	A1
Filing date	Oct 15, 2014
Priority date	Oct 30, 2013
Publication date	Sep 22, 2016
Grant date	—

Abstract

The present disclosure relates generally to a nosecap for a gas turbine engine. The nosecap may be injection molded in an embodiment. The nosecap may have bolt holes surrounded by bolt pockets that are asymmetric about a plane passing through a geometric center of the nosecap and passing through and dividing the bolt hole in an embodiment.

First claim

What is claimed:

1 . A nosecap for a gas turbine engine, the nosecap comprising:
an injection molded body having a forward surface and an aft surface separated by an edge.

2 . The nosecap of claim 1 , wherein the body is formed from a material selected from the group consisting of: plastic, polycarbonate, polyetherimide, polyether ether ketone, and nylon.

3 . The nosecap of claim 1 , further comprising at least one rib disposed on the aft surface.

4 . The nosecap of claim 3 , wherein the at least one rib comprises at least one circumferential rib and at least one axial rib.

5 . The nose cap of claim 1 , further comprising at least one wear indicator hole disposed in the aft surface, wherein the at least one wear indicator hole extends to a location aft of the forward surface.

6 . The nosecap of claim 5 , further comprising a wear indicator material at least partially filling the at least one wear indicator hole.

7 . The nosecap of claim 6 , wherein the wear indicator material is visually distinct from the body.

8 . The nosecap of claim 6 , wherein the wear indicator material comprises room temperature vulcanizing silicone.

9 . The nosecap of claim 1 , further comprising:
at least one bolt hole formed through the body; and at least one bolt pocket, each at least one bolt pocket extending from the edge and surrounding a respective one of the at least one bolt hole; wherein at least one of the at least one bolt pockets is asymmetric about a plane passing through a geometric center of the body and passing through and dividing the respective one of the at least one bolt hole.

10 . The nosecap of claim 9 , wherein:
each of the at least one bolt pockets comprises a leading edge wall, a trailing edge wall, and a transition area wall disposed between the leading edge wall and the trailing edge wall; and the trailing edge wall is curved.

11 . A nosecap for a gas turbine engine, the nosecap comprising:
a body having a forward surface and an aft surface separated by an edge; at least one bolt hole formed through the body; and at least one bolt pocket, each at least one bolt pocket extending from the edge and surrounding a respective one of the at least one bolt hole; wherein at least one of the at least one bolt pockets is asymmetric about a plane passing through a geometric center of the body and passing through and dividing the respective one of the at least one bolt hole.

12 . The nosecap of claim 11 , wherein:
each of the at least one bolt pockets comprises a leading edge wall, a trailing edge wall, and a transition area wall disposed between the leading edge wall and the trailing edge wall; and the trailing edge wall is curved.

13 . The nosecap of claim 11 , wherein the body is formed from a material selected from the group consisting of: plastic, polycarbonate, polyetherimide, polyether ether ketone, and nylon.

14 . The nosecap of claim 11 , further comprising at least one rib disposed on the aft surface.

15 . The nosecap of claim 14 , wherein the at least one rib comprises at least one circumferential rib and at least one axial rib.

16 . The nose cap of claim 11 , further comprising at least one wear indicator hole disposed in the aft surface, wherein the at least one wear indicator hole does not extend through the forward surface.

17 . The nosecap of claim 16 , further comprising a wear indicator material at least partially filling the at least one wear indicator hole.

18 . The nosecap of claim 17 , wherein the wear indicator material is a different color than the body.

19 . The nosecap of claim 17 , wherein the wear indicator material comprises room temperature vulcanizing silicone.

20 . The nosecap of claim 11 , wherein the body comprises an injection molded body.

Assignees

• United Technologies Corp

Inventors

• Kling Colin J
• Brown Charles W

Classifications

• F05D2230/72

  Maintenance · CPC title

• B29C45/00

  Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor (injection blow-moulding B29C49/06) · CPC title

• F05D2300/436

  Polyetherketones, e.g. PEEK · CPC title

• F05D2250/73

  asymmetric · CPC title

• F05D2300/433

  Polyamides, e.g. NYLON · CPC title